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Class Number: 423 Class Title: CHEMISTRY OF INORGANIC COMPOUNDS Subclass Subclass Number Title 700 ZEOLITE 701 .Organic compound used to form zeolite 702 ..Organic template used 703 ...Mixed template 704 ...Nitrogen containing 705 ....Amine 706 .....Cyclic 707 .....Hydroxyl 708 .....Diamine 709 .Seed used 710 .Aging to induce zeolite formation from inorganic mixture 711 ..With physical treatment 712 .Synthesized from naturally occurring product 713 .Isomorphic metal substitution 714 ..Acid treatment 715 ...Halogen containing acid 716 .With change of synthesized zeolite morphology 717 ..Physical treatment 718 .Structure defined X-ray diffraction pattern 1 TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND 2 .Radioactive metal (At. No. 84+ or radioactive isotope of another metal) 3 ..Actinide series metal (At. No. 89+) 4 ...Removing cladding or coating from fuel element 5 ...Fusing 6 ...Ion exchanging or sorbing 7 ....Organic synthetic resin 8 ...Liquid-liquid extracting 9 ....Organo-nitrogen solvent 10 ....Organo-phosphorus solvent 11 ...Forming insoluble substance in liquid 12 ....By coprecipitating with carrier 13 .....Carrier contains bismuth 14 .....Carrier contains lanthanum 15 ....Forming compound containing plural metals or metal and ammonium 16 ....Forming peroxide (e.g., U04, etc.) 17 ....Carbonate leaching 18 ....Acid leaching 19 ...Volatizing 20 ...Acid leaching 21.1 .Rare earth metal (At. No. 21, 39, or 57-71) 21.5 ..Ion exchanging or liquid-liquid extracting 22 .Platinum group metal (Ru, Rh, Pd, Os, Ir, or Pt) 23 .Group IB metal (Cu, Ag, or Au) 24 ..Ion exchanging or liquid-liquid extracting 25 ..Sorbing or magnetic separating 26 ..Flotation 27 ..Leaching, washing, or dissolving 28 ...Specified particle size 29 ...With a cyanide compound 30 ....And pressurizingg 31 ....And agitating 32 ...With ammonia or ammonium containing compound 33 ....Specified temperature 34 ...Forming insoluble substance in liquid 35 ....Forming oxide or carbonate 36 ....Sulfating 37 ....Sulfiding 38 ...Halogenating 39 ....Specified temperature 40 ....With chlorine gas or chlorinated water 41 ...Sulfating 42 ..Forming insoluble substance in liquid 43 ...Specified pH 44 ..Volatizing copper, silver, or gold 45 ..Sulfating 46 ..Halogenating 47 ..Desulfurizing or de-arsenating 48 ..Forming sulfide or matte 49 .Group VIIB metal (Mn, Tc, or Re) 50 ..Forming insoluble substance in liquid 51 ...Halogenating 52 ...Sulfating 53 .Group VIB metal (Cr, Mo, or W) 54 ..Ion exchanging or liquid-liquid extracting 55 ..Forming insoluble substance in liquid 56 ...Ammoniating or nitrating 57 ...Sulfating 58 ...Forming compound containing plural metals 59 ..Volatizing 60 ...As a compound containing chlorine 61 ..Forming compound containing plural metals 62 .Group VB metal (V, Nb, or Ta) 63 ..Ion exchanging or liquid-liquid extracting 64 ..From organic liquids 65 ..Forming insoluble substance in liquid 66 ...Hydroxylating or hydrating 67 ...Ammoniating or sulfating 68 ..Leaching, washing, or dissolving 69 .Group IVB metal (Ti, Zr, or Hf) 70 ..Ion exchanging or liquid-liquid extracting 71 ..Forming compound containing plural metals 72 ...Halogen containing 73 ..Separating Group IVB metals from each other 74 ..Utilizing fluidized bed 75 ..Volatizing 76 ...Titanium, zirconium, or hafnium 77 ....Removing undesirable matter from vapor 78 ....Specified physical form of feed solids 79 ....Contacting feed solids with chlorine gas 80 ..Chemically converting for physical solid-solid separation 81 ..Treating with nitrogen or nitrogenous compound 82 ..Treating with sulfur or halogen containing acid 83 ...Forming metallic iron or insoluble iron containing compound 84 ..Treating with compound containing alkali metal or alkaline earth metal 85 ..Forming insoluble compound containing Group IVB metal 86 ..Dissolving or leaching of iron 87 .Group VA metal or arsenic (Sb, Bi, or As)) 88 ..Volatizing 89 .Group IVA metal (Ge, Sn, or Pb) 90 ..Detinning 91 ...Treating with free halogen or hydrogen halide 92 ..Forming insoluble substance in liquid 93 ...Pressurizing or agitating during reaction 94 ...Halogenating 95 ...Nitrating or sulfating 96 ..Volatizing germanium or tin 97 ..Volatizing lead 98 ..Leaching, washing, or dissolving 99 .Group IIB metal (Zn, Cd, or Hg) 100 ..Ion exchanging or magnetic separating 101 ..Forming insoluble substance in liquid 102 ...Agitating during reaction 103 ...Halogenating 104 ...Hydroxylating or hydrating 105 ...Carbonating 106 ...Sulfating 107 ..Volatizing zinc, cadmium, or mercury 108 ...Mixture contains lead 109 ..Leaching, washing, or dissolving 110 ..Desulfurizing 111 .Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) 112 ..Ion exchanging or liquid-liquid extracting 113 ..Magnetic separating 114 ..Forming compound containing ammonium and metal 115 ..Forming compound containing plural metals 116 ...And halogen 117 ...And sulfur 118.1 ...Aluminosilicate other than zeolite 119 ...Alkali metal aluminate 120 ....From alunite 121 ....From bauxite 122 ..Forming insoluble substance in liquid 123 ...Subjecting mixture to pressure, vacuum, or steam 124 ...Agitating during reaction 125 ...Nitrating 126 ...Halogenating 127 ...Hydroxylating or hydrating 128 ...Sulfating 129 ...Carbonating 130 ..Destroying or separating organic impurity 131 ..Leaching, washing, or dissolving 132 ...With acid 133 ..Volatizing 134 ...Beryllium 135 ...Group IIIA metal 136 ....Utilizing elemental halogen as reactant 137 ..Utilizing carbon as reducing agent 138 .Iron group metal (Fe, Co, or Ni) 139 ..Ion exchanging or liquid-liquid extracting 140 ..Forming insoluble substance in liquid 141 ...Subjecting mixture to pressure, vacuum, or steam 142 ...Agitating during reaction 143 ...Utilizing or forming nitrogenous compound 144 ....Carbonating, hydroxylating, or hydrating 145 ....Sulfatingg 146 ...Sulfating 147 ....Halogenating, hydroxylating, or hydrating 148 ..Utilizing fluidized bed 149 ..Volatizing iron, nickel, or cobalt 150.1 ..Leaching, washing, or dissolving 150.2 ...Spent catalyst 150.3 ...Treatment of iron containing waste mixture 150.4 ...Treatment of matte or nodule 150.5 ....Gas injected into mixture 150.6 ....With electrolytic or magnetic separation 151 ..Converting metal to magnetic form 152 ...At specified temperature 153 ..Desulfurizing 154 ...At specified temperature 155 .Alkaline earth metal (Mg, Ca, Sr, or Ba) 156 ..Magnetic separating 157 ..Ion exchanging or liquid-liquid extracting 157.2 ..Phosphate rock or ore 157.3 ...Acid treatment 157.4 ....Sulfating 157.5 ..Phosphorous or phosphorous compound containing waste as feed 158 ..Forming insoluble substance in liquid 159 ...Subjecting mixture to pressure, vacuum, or steam 160 ...Agitating during reaction 161 ...Specified particle size used or made 162 ...Nitrating or ammoniating 163 ...Halogenating 164 ...Hydroxylating or hydrating 165 ...Carbonating 166 ...Sulfating 167.1 ..Treating asbestos 168 ..Mixing fuel with starting mixture 169 ..Separating magnesium and calcium from each other (e.g., treating dolomite, etc.) 170 ..Treating impure sulfate (e.g., barite, etc.) 171 ...Calcining gypsum 172 ....With steam or at specified temperature 173 ..Treating impure carbonate (e.g., oyster shells, etc.) 174 ...Forming calcium carbide 175 ...Calcining 176 ....Utilizing vacuum or steam 177 ....With agitating or at specified temperature 178 ..Mixture contains halogen or sulfur 179 .Alkali metal (Li, Na, K, Rb, or Cs) 179.5 ..Lithium 180 ..Decomposing amalgam or other alloy 181 ..Ion exchanging or liquid-liquid extracting 182 ..Regenerating solution 183 ...Hydroxide solution 184 ..Forming insoluble substance in liquid 185 ...Fluorinating or defluorinating 186 ...Carbonating 187 ....Utilizing or forming nitrogenous compound 188 ....Subjecting mixture to pressure, vacuum, or steam 189 ....Utilizing carbon dioxide as reactant 190 .....Mixture contains metal chloride 191 ....Halogenatingg 192 ....Hydroxylating or hydrating 193 ....Sulfating 194 ...Utilizing or forming nitrogenous compound 195 ...Subjecting mixture to pressure, vacuum, or steam 196 ...Agitating during reaction 197 ...Halogenating 198 ...Hydroxylating or hydrating 199 ...Sulfating 200 ..Volatizing an alkali metal 201 ..Agitating during heating or reaction 202 ..Treating with acid or acid salt 203 ..Subjecting mixture to pressure, vacuum, or steam 204 ...Mixture contains organic impurity 205 ...Leaching or forming water soluble substance 206.1 ..Mixture contains organic or carbonaceous impurity 206.2 ...Alkali carbonate from trona 207 ...Burning the impurity 208 ..Water leaching or forming water soluble substance 209 ..Carbonating 210 MODIFYING OR REMOVING COMPONENT OF NORMALLY GASEOUS MIXTURE 210.5 .Direct contact with molten material 212 .Mixture is exhaust from internal-combustion engine 213.2 ..Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element 213.5 ...Group VIII element 213.7 ...Including successive stage treatments to modify or remove a different component in each stage 219 .Molecular oxygen or ozone component 220 .Carbon dioxide or hydrogen sulfide component 221 ..Utilizing thionate or thiosulfate as reactant 222 ..Reacting mixture with sulfur dioxide, sulfite, or bisulfite 223 ..Utilizing reactant containing arsenic, phosphorus, or boron 224 ..By oxidizing or burning component 225 ..By suspension of metal oxide or hydroxide particles in liquid 226 ..Utilizing organic reactant 227 ...Phenolate or phenolic type 228 ...Amine 229 ....Ethanolamine 230 ..Utilizing solid sorbent, catalyst, or reactant 231 ...Iron oxide or hydroxide 232 ..Utilizing carbonate as reactant 233 ...And regenerating reactant by incoming actifying gas 234 ..Utilizing ammonium or metal hydroxide solution 235 .Nitrogen or nitrogenous component 236 ..Component also contains carbon (e.g., cyanogen, hydrogen cyanide, etc.) 237 ..Ammonia 238 ...Utilizing liquid as reactant 239.1 ..Utilizing solid sorbent, catalyst, or reactant 239.2 ...Zeolite 240 R .Halogenous component 241 ..Free halogen 240 S ..Solid removal agent 242.1 .Sulfur or sulfur containing component 242.2 ..Utilizing reactant having organic portion to remove or modify sulfur or sulfur containing component 242.3 ...Organic acid 242.4 ...Alcohol, arylhydroxide, or polyoll 242.5 ...Sugar 242.6 ...Heterocyclic 242.7 ...Amine 243.01 ..Utilizing aqueous reactant to remove or modify sulfur or sulfur containing component 243.02 ...And addition of gaseous reactant 243.03 ....Oxygen 243.04 ...Ion separation step 243.05 ...With component added to inhibit corrosion or scaling of processing apparatus 243.06 ...Ammonium compound reactant 243.07 ...Transition metal or compound thereof reactant 243.08 ...Alkali or alkali earth compound reactant 243.09 ....Sulfite 243.1 ....And additional ionic reactant 243.11 ...And subsequent reactive treatment to remove sulfur from spent reactant 243.12 ....Gaseous treatment 244.01 ..Utilizing solid reactant or catalyst to remove or modify sulfur or sulfur containing component 244.02 ...Reactant or catalyst on support 244.03 ....Carbonaceous support 244.04 ....Aluminosilicate support 244.05 ...Reactant added to fuel for reaction in gas mixture 244.06 ...Transition metal or compound thereof reactant 244.07 ...Alkali or alkaline earth or compound reactant 244.08 ....Carbonate 244.09 ...Catalyst 244.1 ....Transition metal or compound thereof catalyst 244.11 ....Zeolite containing 245.1 .Organic component 245.2 ..Utilizing liquid reactant 245.3 ..By burning or catalytically combusting component 246 .Carbon monoxide component 247 ..Utilizing liquid sorbent, catalyst, or reactant 248 .Hydrogen component 215.5 .Solid component 249 RADIOACTIVE (AT. NO. 84+ OR RADIOACTIVE ISOTOPE OF ANOTHER ELEMENT) 250 .Transuranium compound 251 ..Plutonium containing 252 .Thorium compound 253 .Uranium compound 254 ..Binary compound 255 ...Hydrogen containing 256 ...Carbon containing 257 ...Chlorine containing 258 ...Fluorine containing 259 ....Tetrafluoride 260 ...Oxygen containing 261 ....Dioxide 262 INERT OR NOBLE GAS OR COMPOUND THEREOF 263 RARE EARTH COMPOUND (AT. NO. 21, 39, OR 57-71) 264 CHANGING COLOR CHARACTERISTIC OF IMPURITY 265 WITH ADDITIVE 266 .For stabilizing crystal size or shape 267 .Including anticaking or antihygroscopic function 268 ..Additive contains organic portionn 269 .Including corrosion inhibitor 270 .For sulfur trioxide 271 ..Additive contains metal, boron, or silicon 272 .For hydrogen peroxide 273 ..Additive contains metal, boron, or silicon 274 .Coating or binder 275 .Additive contains metal, boron, or silicon 276 BORON OR COMPOUND THEREOF 277 .Oxygen containing 278 ..Binary compound 279 ..Ternary compound containing metal or ammonium 280 ...Utilizing dissolved or liquid reactant 281 ....Peroxide 282 ....Carbon containing 283 ..Ternary compound containing hydrogen 284 .Nitrogen and hydrogen containing 285 ..Ternary compound 286 .Hydrogen and metal or ammonium containing 287 ..Utilizing halogen containing reactant 288 ..Utilizing oxygen containing reactant 289 .Binary compound (e.g., boride, etc.) 290 ..Nitrogen containing 291 ..Carbon containing 292 ..Halogen containing 293 ...Fluorine 294 ..Hydrogen containing 295 ...By reacting metal hydride or organic derivative thereof 296 ...By reacting free hydrogen 297 ..Refractory metal containing (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, or W) 298 .Elemental boron 299 PHOSPHORUS OR COMPOUND THEREOF 300 .Halogen containing 301 ..Fluorine 302 .Nitrogen containing 303 .Sulfur containing 304 .Oxygen containing 305 ..Metal or ammonium containing 306 ...Plural metal or metal and ammonium containing 307 ...Hydrogen containing 308 ....Orthophosphate 309 .....Utilizing phosphoric acid or its anhydride as reactant 310 ......And ammonia 311 ...Orthophosphate 312 ....Alkali metal or ammonium containing 313 .....Utilizing phosphoric acid as reactant 314 ...Metaphosphate 315 ...Triphosphate or tetraphosphate 316 ..Ternary compound containing hydrogen 317 ...Orthophosphoric acid 318 ....Utilizing reactant containing silicon or carbon 319 ....Reacting an acid and phosphate rock 320 .....Sulfuric acid 321.1 ....Purification or recovery 321.2 .....Organic solvent extraction 322 .Elemental phosphorus 323 ..Utilizing a phosphate as reactant 324 SILICON OR COMPOUND THEREOFF 325 .Oxygen containing 326 ..Metal containing (i.e., silicate) 327.1 ...Aluminum containing 327.2 ....Mullite 328.1 ....Aluminosilicate 328.2 .....Crystalline 328.3 ......Mica 329.1 .....X-ray diffraction pattern 330.1 .....Gelling or precipitation 331 ...Alkaline earth metal containing (Mg, Ca, Sr, or Ba) 332 ...Alkali metal containing (Li, Na, K, Rb, or Cs) 333 ....By precipitating or gelling from silicate solution 334 ....By heat treating silica and the alkali metal 335 ..Silica 336 ...By hydrolyzing vapor phase silicon compound 337 ...By oxidizing volatile silicon compound (e.g., combustion, etc.) 338 ...By gelling 339 ...By precipitating 340 ...By purifying sand 341 .Halogen containing 342 ..Halogenated silane 343 ..Volatizing a solid 344 .Binary compound (e.g., silicide, etc.) 345 ..Of carbon (i.e., silicon carbide) 346 ...By reacting vapor phase silicon compound with carbon or carbon containing compound 347 ..Of hydrogen (e.g., silane, etc.) 348 .Elemental silicon 349 ..From silicon containing compound 350 ...Utilizing reducing substance 351 NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID) 352 .Ammonia or ammonium hydroxide 353 ..From nitride of metal or silicon 354 ..And producing inorganic carbon and nitrogen containing compound 355 ..By hydrolyzing inorganic carbon and nitrogen containing compound 356 ..From ammonium compound 357 ...Utilizing calcium compound 358 ..From organic material containing nitrogen 359 ..From elemental hydrogen and nitrogen 360 ...With exchanging heat between catalyst and synthesis or effluent gas 361 ...Utilizing plurality of catalyst beds or portions 362 ...Utilizing metal containing catalyst 363 ....Alkali or alkaline earth metal 364 .Carbon containing 365 ..And oxygen containing (e.g., fulminate, cyanate, etc.) 366 ..And sulfur containing (e.g., thiocyanate, etc.) 367 ..And iron containing (e.g., ferrocyanide, etc.) 368 ..Cyanamide radical containing 369 ...And hydrogen containing 370 ...Utilizing carbide as reactant 371 ..Ternary compound 372 ...Hydrogen cyanide 373 ....Employing formamide or formate as reactantt 374 ....Utilizing nitric oxide or free nitrogen as reactant 375 ....Employing ammonia as reactant 376 .....And using catalyst 377 ....Utilizing metal cyanide as reactant 378 ...Using cyanamide as reactant 379 ...Utilizing hydrogen cyanide as reactant 380 ...Utilizing free nitrogen as reactant 381 ....And using catalyst 382 ....Utilizing carbon reactant from specified source 383 ..Halogen containing 384 ..Binary (e.g., cyanogen, etc.) 385 .Oxygen containing 386 ..Halogen containing 387 ..Hydrogen containing 388 ...Sulfur containing 389 ....Sulfamic acid 390.1 ...Nitric acid 391 ....By reacting a salt and an acid 392 ....Utilizing ammonia as reactant 393 ....Utilizing nitrogen oxide as reactant 394 .....Nitrogen peroxide 394.2 ....Purification or recovery 395 ..Nitrate 396 ...Ammonium containing 397 ...Utilizing ammonium or metal nitrate as reactant 398 ...Utilizing halogen containing reactant 399 ....And nitric acid reactant 400 ..Binary compound (oxide of nitrogen) 401 ...Utilizing nitrosyl chloride as reactant 402 ...Utilizing catalyst 403 ....And ammonia as reactant 404 .....Catalyst is metal oxide 405 ...Nitric oxide (NO) 406 .Binary compound 407 ..Hydrazine or hydrazine hydrate 408 ...Utilizing halogen or sulfur as reactant 409 ..Metal or ammonium containing 410 ...Azide 411 ...Titanium or zirconium containing 412 ...Aluminum containing 413 .Hydrogen containing (e.g., amide, imide, etc.) 414 CARBON OR COMPOUND THEREOF 415.1 .Oxygen containing 415.2 ..Percarbonate compound 416 ..Carbonyl 417 ...Metal containing 418 ....Utilizing organic compound as reactant 418.2 ..Carbon monoxide 419.1 ..Carbonate or bicarbonate 420 ...Ammonium containing 420.2 ...Plural metal containing 421 ...Alkali metal containing (Li, Na, K, Rb, or Cs) 422 ....Hydrogen containing (bicarbonate) 423 .....By carbonating ammoniated brine 424 .....By reacting halogen containing compound 425 .....Sesquicarbonate 426 ....Densifying soda ash 427 ....By reacting a bicarbonatee 428 ....By reacting sulfur containing compound 429 ....By reacting halogen containing compound 430 ...Alkaline earth metal containing (Mg, Ca, Sr, or Ba) 431 ....By reacting sulfur or halogen containing compound 432 ....By reacting oxide or hydroxide of the metal 433 ...Lead containing 434 ....By reacting compound containing sulfur or a halogen 435 ....By reacting lead acetate or acetic acid 436 .....And utilizing metallic lead as reactant 437 ..Carbon dioxide or carbonic acid 438 ...From a carbonate 439 .Binary compound (e.g., carbide, etc.) 440 ..Refractory metal containing 441 ..Calcium containing 442 ...By reacting carbon and inorganic calcium containing compound 443 ..Disulfide 444 ...By reacting free carbon 445 .Elemental carbon 446 ..Diamond 447.1 ..Fiber, fabric, or textile 447.2 ...Product 447.3 ...From gaseous reactants 447.4 ...Prior treatment before carbonization (except with gaseous oxygen) 447.5 ....With metal, metal compound, or phosphorus compound 447.6 ...Including reaction with gaseous oxygen 447.7 ...In specific atmosphere (other than vacuum or air) 447.8 ...Controlling varying temperature or plural heating steps 447.9 ...Carbonizing cellulosic material 448 ..Graphite 449.1 ..Carbon black (e.g., lampblack) 449.2 ...Treating carbon black 449.3 ....Treating with acid, or gas which forms acid in water 449.4 ....Halogen or compound thereof 449.5 ....Gaseous oxygen containing compound 449.6 ...Utilizing synthetic polymer as reactant 449.7 ....Tire 449.8 ...Solid material in feed 450 ...Directly from fluid hydrocarbon only 451 ....Rapid and discontinuous oxidation 452 ....Including flame impinging on cool surface 453 ....By contacting with catalyst or hot solid surface 454 .....Hot particulate bed or reaction zone lining or refactory 455 ....Specified injection velocity 456 ....Specified injection angle (e.g., helical, tangential, etc.) 457 .....At least one radial inlet 458 ....Gas or vapor only as infeed to process 449.9 ...Liquid feed only 459 ...From carbon monoxide infeed to process 460 ..Treating carbon 461 ..Recovery or purification 462 HALOGEN OR COMPOUND THEREOF 463 .Plural metal or metal and ammonium containing 464 ..Including fluorine 465 ...Including aluminum 466 .Plural diverse halogens containing 467 .Sulfur containing 468 ..Ternary compound containing oxygenn 469 ..Binary compound 470 .Ammonium halide 471 ..Recovery or purification 472 .Ternary compound 473 ..Hypohalite or hypohalous acid 474 ...Calcium hypochlorite 475 ..Halogenate (e.g., chlorates, etc.) 476 ..Perhalate or perhalic acid 477 .Chlorine dioxide 478 ..By reacting a chlorate 479 ...And a nitrogenous or carbonaceous compound 480 ...And sulfur dioxide 481 .Hydrogen halide 482 ..By reacting alkali metal salt with sulfuric acid 483 ..Hydrogen fluoride 484 ...From impure starting material 485 ....Fluorspar 486 ..Utilizing an element as reactant 487 ...Reacting elemental hydrogen and elemental halogen 488 ..Recovery or purification 489 .Binary fluorine containing compound 490 ..Alkali or alkaline earth metal containing 491 .Binary compound containing metal 492 ..Refractory metal (Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, or W) 493 ..Iron group metal or copper (Fe, Co, Ni, or Cu) 494 ..Group IVA metal or copper (Ge, Sn, or Pb) 495 ..Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) 496 ...Utilizing carbon or carbon containing compound 497 ..Alkaline earth metal (Mg, Ca, Sr, or Ba) 498 ...Anhydrous magnesium chloride 499.1 ..Alkali metal 499.2 ...From carbonaceous compound 499.3 ...Lithium chloride 499.4 ...Sodium chloride 499.5 ....Purification 500 .Elemental halogen 501 ..Ion exchanging or liquid-liquid extracting 502 ..Oxidizing catalytically 503 ..Sorbing 504 ..From mixture containing alkali metal or alkaline earth metal 505 ...Forming insoluble substance in liquid 506 ..By reacting alkali metal halide with sulfur compound 507 ..By reacting hydrogen halide or ammonium halide 508 SELENIUM OR TELLURIUM OR COMPOUND THEREOF 509 .Binary compound 510 .Elemental selenium or tellurium 511 SULFUR OR COMPOUND THEREOF 512.1 .Oxygen containing 513 ..Persulfate 514 ..Thiosulfate 515 ..Dithionite 516 ...Employing amalgam as reactant 517 ..Metal and ammonium containing 518 ..Plural metal containing 519 ..Bisulfite 519.2 ..Sulfite 520 ...Bisulfate 521 ..Ternary compound containing hydrogenn 522 ...Sulfuric acid 523 ....Nitrogenous impurity or utilizing nitrogenous catalyst or reactant 524 .....Lead chamber process 525 ....Starting material includes organic or carbonaceous impurity 526 .....Utilizing pressure or vacuum on mixture 527 .....Adding organic compound to mixture 528 .....Contacting mixture with gas, steam, or vapor 529 ....Subjecting reactants to pressure, vacuum, or steam 530 ....Utilizing metal sulfate 531 ....Purifying acid or reactant 532 ..Sulfur trioxide 533 ...Utilizing catalyst in reaction 534 ....Promoter or successive diverse catalysts 535 ....Catalyst contains oxygen, vanadium, and another metal 536 ....Platinum catalyst 537 .....With sulfate or asbestos carrier 538 ....Oxygen containing catalyst 539 ..Sulfur dioxide 540 ...From acid sludge or waste 541.1 ...Utilizing metal sulfate as reactant 541.4 ....Ammonium sulfate 542 ...Burning or roasting a sulfur compound 543 ...Burning sulfur 544 ..Sulfate 545 ...Ammonium containing 546 ....Utilizing thiocyanate as reactant 547 ....Employing sulfite or bisulfite as reactant 548 ....Using metal sulfate as reactant 549 ....Employing sulfuric acid as reactant 550 .....Ammonia from waste gas 551 ...Alkali metal containing (Li, Na, K, Rb, or Cs) 552 ....Utilizing chloride as reactant 553 ....Dehydrating 554 ...Alkaline earth metal containing (Mg, Ca, Sr, or Ba) 555 ....Calcium 556 ...Aluminum containing 557 ...Copper containing 558 ...Iron containing 559 ...Lead containing 560 .Ternary compound containing hydrogen and metal (e.g., hydrosulfide, etc.) 561.1 .Binary compound 562 ..Polysulfide 563 ..Hydrogen sulfide 564 ...By catalytic reaction 565 ..Utilizing free sulfur as reactant 566 ..Utilizing sulfate or sulfuric acid as reactant 566.1 ..Sulfide of Cd, Zn, or Hg 566.2 ..Sulfide of alkali metal 566.3 ..Sulfide of alkaline earth metal 567.1 .Elemental sulfur 568 ..Chlorinating 569 ..Reducing sulfur dioxide by carbon containing material 570 ...Catalytic reaction 571 ..Reacting a sulfide 572 ...With steam to form hydrogen sulfide 573.1 ...Hydrogen sulfidee 574.1 ....With sulfur dioxide 574.2 .....In inorganic liquid 575 .....Utilizing organic solvent or absorbent 576 .....Utilizing promotor containing silica or aluminum 576.2 ....With specified procedure for sulfur recovery or specified conditions for producing sulfur in more recoverable form 576.4 ....By reacting gaseous feed stream with liquid aqueous mixture 576.5 .....Transition metal-containing mixture 576.6 ......Chelated or sequestered transition metal 576.7 .....Organic compound-containing 576.8 ....By reacting gaseous feed with gas containing free oxygen 577 ...Reacting metal sulfide with sulfur dioxide 578.1 ..Purifying crude sulfur 578.2 ...From ore 578.4 ..From liquid or solid compound 579 OXYGEN OR COMPOUND THEREOF 580.1 .Water 580.2 ..Heavy water 581 .Superoxide or ozone 582 .Peroxide 583 ..Alkaline earth metal (Mg, Ca, Sr, or Ba) 584 ..Hydrogen 585 ...From persulfuric acid or persulfate 586 ...From inorganic peroxide 587 ...From organic reactant 588 ....By oxidizing hydroquinone or anthraquinone 589 .....Including dissolving reactant in ester containing solvent 590 .....Including dissolving reactant in alcohol containing solvent 591 ....By oxidizing alcohol or hydrocarbon 592 .Metal containing 593 ..Plural metals or metal and ammonium 594 ...Iron, cobalt, or nickel (e.g., ferrite, etc.) 595 ...Chromium (e.g., chromate, etc.) 596 ....And alkali metal, alkaline earth metal, or ammonium containing 597 .....Dichromate 598 ...Titanium (e.g., titanate, etc.) 599 ...Manganese (e.g., manganate, etc.) 600 ...Aluminum (e.g., aluminate, etc.) 601 ...Arsenic (e.g., arsenite, etc.) 602 ....Arsenate 603 .....And lead containing 604 ..Group IB metal (Cu, Ag, or Au) 605 ..Group VIIB metal (Mn, Tc, or Re) 606 ..Group VIB metal (Cr, Mo, or W) 607 ...Chromium 608 ..Group IVB metal (Ti, Zr, or Hf) 609 ...Titanium monoxide or sesquioxide 610 ...Titanium dioxide 611 ....Utilizing titanium halide as reactant 612 .....Titanium tetrahalide 613 ......Reacting with oxiding gas 614 .......In fluidized bed 615 ....Utilizing titanium sulfate as reactantt 616 .....And utilizing acid 617 ..Group VA metal or arsenic (Sb, Bi, or As) 618 ..Group IVA metal (Ge, Sn, or Pb) 619 ...Lead 620 ....Utilizing metallic lead as reactant 621 .....Molten 622 ..Zinc 623 ...Volatizing zinc 624 ..Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) 625 ...Aluminum 626 ....Utilizing acid 627 ....Reacting metallic aluminum with water or water vapor 628 ....Forming catalyst, sorbent activated, or narrow pore alumina 629 ....Hydroxide 630 ....Utilizing carbon or compound thereof as reactant 631 ....Utilizing nitrogenous compound as reactant 632 ..Iron 633 ...Ferric oxide 634 ....Gamma form 635 ..Alkaline earth metal (Mg, Ca, Sr, or Ba) 636 ...Process of manufacturing 637 ....Utilizing carbonate as reactant 638 ....By reacting a sulfur containing compound 639 ....By reacting a nitrogenous or halogenous compound 640 ....By hydrating lime 641 ..Alkali metal (Li, Na, K, Rb, or Cs) 642 ...By reacting sulfur containing compound 643 ...By reacting a nitrogenous or halogenous compound 644 HYDROGEN OR COMPOUND THEREOF 645 .Binary compound 646 ..Alkali metal containing (Li, Na, K, Rb, or Cs) 647 ..Alkaline earth metal containing (Mg, Ca, Sr, or Ba) 647.7 .Deuterium-containing 648.1 .Elemental hydrogen 649 ..Ortho-para conversion 650 ..By decomposing hydrocarbon 651 ...Catalytic reaction 652 ....Including decomposing water 653 .....Catalyst substance contains nickel 654 ......And another metal 655 ..By reacting water with carbon monoxide 656 ...Utilizing metal oxide catalyst 657 ..By reacting water or aqueous solution with metal or compound thereof 658 ...Iron 658.2 ..By direct decomposition of binary compound; e.g., chemical storage, etc. 658.3 ..By reaction of impurities in a stream containing elemental hydrogen 658.5 EXTRACTING, LEACHING, OR DISSOLVING 659 MISCELLANEOUS PROCESS * ****************************** * DIGESTS * ****************************** DIG 1 Waste acid containing iron DIG 2 .Sulfuric acid DIG 3 Papermaking liquor DIG 4 Manganese marine moduless DIG 5 Automatic (including computer) control DIG 6 Temperature control DIG 7 Isotope separation DIG 8 Corrosion or deposition inhibiting DIG 9 Reaction techniques DIG 10 .Plasma energized DIG 11 .High pressure DIG 12 .Molten media DIG 13 .Catalyst contact DIG 14 .Ion exchange; chelation or liquid/liquid ion extraction DIG 15 .Comminution DIG 16 .Fluidization DIG 17 .Microbiological reactions DIG 18 Treating trash or garbage DIG 19 Geothermal steam purification DIG 21 Faujasite; e.g., X, Y, CZS-3, ECR-4, Z-14HS, VHP-r DIG 22 MFI; e.g., ZSM-5. Silicalite, LZ-241 DIG 23 Ferrierite; e.g., Sr-D ZSM-33 DIG 24 LTA; e.g., A, Alpha, ZK-4, ZK-21, ZK-22 DIG 25 Mordenite; e.g., Na-D, Pttilolite, Zeolon DIG 26 Mazzite; e.g., ZSM-4, Omega DIG 27 Beta; e.g., NU-2 DIG 28 LTL; e.g., Ba-g, L, AG-1, AG-2, AG-4, Ba-6 DIG 29 MEL; e.g., ZSM-11 DIG 30 ALPO and SAPO DIG 31 RHO; e.g., ECR-10, LZ-214 DIG 32 Sodalite; e.g., HS, Ultramarine DIG 33 MTW; e.g., ZSM-12, NU-13, Czh-5, TPZ-3 DIG 34 Pentasils other than MFI and MEL; e.g., AZ-1, TZ-01, TZ-02, TRS, ZBM-10 DIG 35 TON; e.g., Theta-1, ISI-1, KZ-2, ZSM-22, NU-10 DIG 36 MTT; e.g., ZSM-23, ISI-1, KZ-1, EU-1, EU-4, EU-13 DIG 37 LEV; e.g., Levynik, ZMT-45, ZK-20, NU-3, LZ-132, LZ-133 DIG 38 Offretite; e.g., TMA Offreite