子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
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| 81 | Recovery of rhodium from carbonylation residues | US241181 | 1981-03-06 | US4340570A | 1982-07-20 | Walter C. Davidson |
| Residues are formed in the carbonylation of esters or ethers, particularly in the production of acetic anhydride or ethylidene diacetate. Such residues contain noble metal, typically rhodium used as a catalyst, which must be recovered before the residues can be disposed of. In the process of the invention, the rhodium values are freed from the residues by a series of treatments with amines and other reagents, thereby enabling the rhodium to be extracted by subsequent contact with an aqueous halogen acid. | ||||||
| 82 | Method of making lead and bismuth ruthenate and iridate pyrochlore compounds | US956744 | 1978-11-01 | US4203871A | 1980-05-20 | Harold S. Horowitz; John M. Longo; Joseph T. Lewandowski |
| A liquid solution method of preparing electrically conductive pyrochlore compounds having the formula:A.sub.2 [B.sub.2-x A.sub.x ]O.sub.7-yis disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof, 0.ltoreq..times..ltoreq.1.0 and 0.ltoreq.y.ltoreq.1. The method involves reacting A and B cations to yield a pyrochlore oxide by precipitation of A and B cations in a liquid medium having a pH which is equal to or greater than 4.5, but less than 13.5, in the presence of an oxygen source at a temperature below about 200.degree. C. for a time sufficient for reaction to occur. In those instances in which amorphous reaction products are obtained, these amorphous reaction products are subsequently heat treated at a temperature of about 200.degree. C. to about 600.degree. C. for a time sufficient to convert amorphous reaction products to crystalline pyrochlore(s). | ||||||
| 83 | Recovery of rhodium complex catalysts homogeneously dissolved in organic media | US953339 | 1978-10-20 | US4188363A | 1980-02-12 | Bernard Fell; Wilfried Dolkemeyer |
| A process for the separation of rhodium catalysts from high-boiling and tarry distillation residues obtained in the processing of reaction products from organic, catalytic reactions, utilizing dissolved, homogenous rhodium complex catalysts, such as hydroformylation reactions, hydrocarboxylation reactions, isomerization, dimerization and oligomerization reactions, by passing a stream of a non-oxidizing, and preferably reducing, carrier gas, such as hydrogen or a hydrogen-containing gas, through the residue at an elevated temperature to selectively remove the organic constituents, leaving a heterogenous residue containing the rhodium, and dissolving this heterogenous residue in an inorganic acid to thereby form a water-soluble rhodium compound, which is suitable for the production of a complex rhodium catalyst in the known manner. Oleum is preferably used as the inorganic acid, and after mixing with the heterogenous residue, a portion is preferably fumed off. | ||||||
| 84 | Method of making lead-rich and bismuth-rich pyrochlore compounds using an alkaline medium | US856648 | 1977-12-02 | US4129525A | 1978-12-12 | Harold S. Horowitz; John M. Longo; Joseph T. Lewandowski |
| A liquid solution method of preparing electrically conductive pyrochlore compounds of high surface area, having the formula:A.sub.2 [B.sub.2-x A.sub.x ]0.sub.7-yis disclosed wherein A is selected from lead, bismuth and mixtures thereof, B is selected from ruthenium, iridium and mixtures thereof, 0 < x .ltoreq. 1.0 and 0 .ltoreq. y .ltoreq. 1. The method involves reacting A and B cations to yield a pyrochlore oxide by precipitation of A and B cations from an aqueous solution source of these cations in a liquid alkaline medium having a pH of at least about 13.5 in the presence of an oxygen source at a temperature below about 200.degree. C for a sufficient time for reaction to occur. | ||||||
| 85 | Pb.sub.2 [M.sub.2-x Pb.sub.x ]O.sub.7-y compounds wherein M is Ru, Ir or mixtures thereof, and method of preparation | US856646 | 1977-12-02 | US4124539A | 1978-11-07 | Harold S. Horowitz; John M. Longo; Joel I. Haberman |
| Novel lead-rich pyrochlore type compounds are described having the formula:Pb.sub.2 [M.sub.2-x Pb.sub.x ]O.sub.7-ywherein M is selected from the group consisting of Ru, Ir and mixtures thereof and wherein x is greater than 0 and less than or equal to about 1.2 and y is greater than or equal to 0 and less than or equal to about 1.0. A method of synthesizing these compounds is also described. The method involves the solid state reaction of a lead source and a ruthenium source and/or an iridium source at temperatures below about 600.degree. C in an oxygen-containing environment. | ||||||
| 86 | Method for the recovery of platinum from spent catalysts | US751820 | 1976-12-17 | US4077800A | 1978-03-07 | Ivo Peka; Ludek Vodicka; Jan Ulrich; Jan Hajek |
| An economical procedure for the recovery of platinum from a spent catalyst involves subjecting the catalyst to fluorination with elementary fluorine or a mixture thereof with hydrogen fluoride at a temperature ranging from 100.degree.-600.degree. C. The resultant platinum fluoride is then converted to platinum in elemental form. | ||||||
| 87 | Metal anode for electrochemical processes | US737548 | 1976-11-01 | US4065377A | 1977-12-27 | Christine Zollner; Gerhard Thiele; Dieter Zollner; Konrad Koziol |
| An anode for electrochemical processes comprises a basis metal and a new electrochemical active substance for the cover layer, which substance is thallium palladate having the formula TlPd.sub.3 O.sub.4. | ||||||
| 88 | Platinum colloid sol and method of forming same | US683757 | 1976-05-06 | US4059541A | 1977-11-22 | Henry G. Petrow; Robert J. Allen |
| This disclosure deals with novel very fine, particulated colloidal platinum of the 15-25 Angstrom size range of unusual catalytic activity and particularly adapted for adsorption upon various substrata, and produced from a new platinum sulfite acid and a sol derived therefrom, with novel methods of preparation thereof being disclosed. | ||||||
| 89 | Iridium carbonyl complexes | US492958 | 1974-07-29 | US4029748A | 1977-06-14 | Denis Forster; Arnold Hershman; Donald E. Morris |
| The complexes [Ir(CO).sub.3 I], [HIr(CO).sub.3 I.sub.2 ], [HIr(CO).sub.2 I.sub.2 (H.sub.2 O)], [RIr(CO).sub.2 I.sub.2 ], [(RCO)Ir(CO).sub.2 I.sub.2 ] where R is an alkyl radical, are described. Processes for preparing the aforesaid complexes are described and in addition a new process for preparation of [Ir(CO).sub.3 I.sub.3 ] is described. | ||||||
| 90 | Finely particulated colloidal platinum compound and sol for producing the same, and method of preparation | US534732 | 1974-12-20 | US3992512A | 1976-11-16 | Henry G. Petrow; Robert J. Allen |
| This disclosure deals with novel very fine, particulated colloidal platinum of the 15-25 Angstrom size range of unusual catalytic activity and particularly adapted for adsorption upon various substrata, and produced from a new platinum sulfite acid and a sol derived therefrom, with novel methods of preparation thereof being disclosed. | ||||||
| 91 | Recovery of fission products from acidic waste solutions thereof | US30937772 | 1972-11-24 | US3891741A | 1975-06-24 | CARLIN WILLIAM W; DARLINGTON WILLIAM B; DUBOIS DONALD W |
| Fission products, e.g., palladium, ruthenium and technetium, are removed from aqueous, acidic waste solutions thereof. The acidic waste solution is electrolyzed in an electrolytic cell under controlled cathodic potential conditions and technetium, ruthenium, palladium and rhodium deposited on the cathode. Metal deposit is removed from the cathode and dissolved in acid. Acid insoluble rhodium metal is recovered, dissolved by alkali metal bisulfate fusion and purified by electrolysis. In one embodiment, the solution formed by acid dissolution of the cathode metal deposit is treated with a strong oxidizing agent and distilled to separate technetium and ruthenium (as a distillate) from palladium. Technetium is separated from ruthenium by organic solvent extraction and then recovered, e.g., as an ammonium salt. Ruthenium is disposed of as waste by-product. Palladium is recovered by electrolysis of an acid solution thereof under controlled cathodic potential conditions. Further embodiments wherein alternate metal recovery sequences are used are described.
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| 92 | Compound of rhodium and molybdenum and method of manufacture | US3773915D | 1972-01-03 | US3773915A | 1973-11-20 | DEGUELDRE L; GOBILLON Y; BOURGEOIS L |
| MANUFACTURE OF AN OXIDIC COMPOUND OF RHODIUM AND MOLYBDENUM OF EMPIRICAL FORMULA RH2MOO6 HAVING SEMICONDUCTING PROPERTIES, SUITABLE FOR COATING ELECTRODES FOR USE IN ELECTROCHEMICAL PROCESSES.
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| 93 | Solid compound of rhodium and tungsten and manufacturing process therefor | US3736270D | 1971-07-29 | US3736270A | 1973-05-29 | DEGUELDRE L; GOBILLON Y; CLERBOIS L; BOURGEOIS L |
| RH2WO6 CRYSTALLIZED IN THE TETRAGONAL SYSTEM UNDER THE RIRUTILE FORM, THE PARAMETERS AO AND CO BEING 4.609 AND 9.083 A. RESPECTIVELY, HAVING AN ELECTRICAL CONDUCTIVITY OF 10-4 (OHM.CM)-1 AND ENERGY GAP OF 0.03 E.V.
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| 94 | Process for purifying hexachloroiridic acid | US3565576D | 1969-12-22 | US3565576A | 1971-02-23 | PANNETIER GUY |
| A PROCESS FOR REMOVING SODIUM CHLORIDE CONTAINED IN COMMERCIAL HEXACHLOROPHIC ACID, WITH COMPRISES A HEAT TREATMENT OF THE IMPURE ACID WITH NITRIC ACID, A PRECIPITATION OF A COMPLEX HYDROXIDE OF TETRAVALENT IRIDIUM BY ADDING AMMONIUM HYDROXIDE IN THE PRESENCE OF HYDROGEN PEROXIDE AND A HEAT TREATMENT OF THE WASHED PRECIPITATE WITH HYDROCHLORIC ACID IN ORDER TO OBTAIN SUBSTANTIALLY PURE HEXACHLOROIRIDIC ACID.
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| 95 | Pyrochlore-type ternary oxides tl2ru207 and tl2ir207 | US3560144D | 1968-06-28 | US3560144A | 1971-02-02 | SLEIGHT ARTHUR W |
| DESCRIBED AND CLAIMED ARE THE TWO TERNARY COMPOUNDS TL2RU2O7 AND TL2IR2O7, BOTH OF WHICH HAVE THE PYROCHLORETYPE STRUCTURE. THE COMPOUNDS ARE PRODUCED FROM MIXTURES OF THE BINARY OXIDES, TL2O3 AND RUO2 OR IRO2, RESPECTIVELY, IN SUBSTANTIALLY THE STOICHIOMETRIC RATIOS AT TEMPERATURES OF 400*C. TO 1,400*C. THE COMPOUNDS ARE USEFUL IN ELECTRICAL APPLICATIONS.
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| 96 | Osmium carbonyl | US3508870D | 1968-01-02 | US3508870A | 1970-04-28 | BRADFORD CHRISTOPHER WILLIAM |
| 97 | Process and apparatus for expanding inorganic salts | US3454357D | 1964-08-03 | US3454357A | 1969-07-08 | RHEES RAYMOND C; HAMMAR HOWARD N |
| 98 | Preparation of trimeric ruthenium tetracarbonyl | US3446591D | 1968-04-10 | US3446591A | 1969-05-27 | PINO PIERO; BRACA GUISEPPE; SETTINO S FREDIANO A |
| 99 | Preparation of trimeric ruthenium tetracarbonyl | US47584065 | 1965-07-29 | US3387932A | 1968-06-11 | PIERO PINO; GUISEPPE BRACA |
| 100 | Recovery of rhodium from fission products | US79702659 | 1959-03-04 | US3166404A | 1965-01-19 | HAUSMAN EUGENE A |
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