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Class Information
Number: 502/215
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Catalyst or precursor therefor > Selenium or tellurium or compound containing same
Description: Composition including either element 34 or 52, free or chemically combined.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
4597855 Upgrading of residual oils using a selenium catalyst wherein sulfur and metallic impurities are reduced Jul. 1, 1986
4596787 Process for preparing a supported catalyst for the oxydehydrogenation of ethane to ethylene Jun. 24, 1986
4590173 Process for producing antimony-containing oxide catalyst supported on silica for use in fluidized bed reaction May. 20, 1986
4563440 Process for preparing an oxidation catalyst Jan. 7, 1986
4556731 Process for the oxidation of olefins using catalysts containing various promoter elements Dec. 3, 1985
4536483 Process for regeneration of iron-antimony metallic oxide catalysts Aug. 20, 1985
4511671 Catalyst for manufacturing methacrolein Apr. 16, 1985
4504599 Method for production or activation of antimony-containing metal oxide catalysts Mar. 12, 1985
4499298 Process for the production of esters Feb. 12, 1985
4484992 Process for the production of hydrogen by means of heterogeneous photoredox catalysis Nov. 27, 1984
4485188 Preparation of polymetallic catalysts Nov. 27, 1984
4473705 Process for producing oxalate diester Sep. 25, 1984
4473506 Iron selenium tellurium oxide catalysts Sep. 25, 1984
4472314 Bismuth-containing mixed oxides of perovskite structure in oxidation of acyclic hydrocarbons Sep. 18, 1984
4454244 New compositions Jun. 12, 1984
4447558 Process for producing an antimony containing metal oxide catalyst May. 8, 1984
4424141 Process for producing an oxide complex catalyst containing molybdenum and one of bismuth and tellurium Jan. 3, 1984
4415477 Catalyst for dehydrogenation oxygen-containing derivatives of the cyclohexane series into the corresponding cyclic ketones and/or phenols Nov. 15, 1983
4415482 Oxidation and ammoxidation catalyst Nov. 15, 1983
4415483 Class of Friedel-Crafts catalysts Nov. 15, 1983
RE31443 Treatment of silica Nov. 15, 1983
4414406 Class of Friedel-crafts catalysts Nov. 8, 1983
4414134 Impregnating catalysts Nov. 8, 1983
RE31433 Variable tooth saw blade Nov. 1, 1983
4410569 Palladium (II) bis(hexafluoroacetylacetonate), adducts derived therefrom and uses thereof Oct. 18, 1983
4410450 Process for producing fluid catalyst having good activity from coarse catalyst Oct. 18, 1983
4409122 Catalyst reactivation Oct. 11, 1983
4388223 Catalyst for the conversion of unsaturated hydrocarbons into diolefins or unsaturated aldehydes and nitriles, and process for preparing the same Jun. 14, 1983
4379076 Reforming with multimetallic catalysts Apr. 5, 1983
4374758 Preparation of stable tellurium-containing solution from metallic tellurium and process for producing tellurium-antimony containing oxide catalyst using said solution Feb. 22, 1983
4368115 Catalysts comprising layered chalcogenides of group IVb-group VIIb prepared by a low temperature nonaqueous precipitate technique Jan. 11, 1983
4366325 Process for the preparation of 3-phenoxy-benzaldehydes Dec. 28, 1982
4354961 Method of preparing a catalyst for synthesizing unsaturated esters Oct. 19, 1982
4347163 Te-containing methacrolein oxidation catalysts and their use Aug. 31, 1982
4339394 Process of ammoxidation of olefins in the presence of multiply promoted Sn-Sb oxide catalysts Jul. 13, 1982
4336403 Preparation of methyl methacrylate by reaction of methyl propionate and methanol Jun. 22, 1982
4335018 Catalyst for the production of maleic anhydride Jun. 15, 1982
4331789 Polymerization using a selenium or tellurium treated catalyst May. 25, 1982
4323480 Method of preparing di and poly chalcogenides of group IVb, Vb, molybdenum and tungsten transition metals by low temperature precipitation from non-aqueous solution and the product obtained by Apr. 6, 1982
4322358 Preparation of furan Mar. 30, 1982
4316855 Multiply promoted Sn-Sb oxide catalysts Feb. 23, 1982
4308171 Method of preparing di and poly chalcogenides of group VIIb by low temperature precipitation from nonaqueous solution and small crystallite size stoichiometric layered dichalcogenides of rheni Dec. 29, 1981
4299892 Amorphous and sheet dichalcogenides of Group IVb, Vb, molybdenum and tungsten Nov. 10, 1981
4295998 Selenium or tellurium treated silica Oct. 20, 1981
4290920 Sb-containing catalysts by Sb-oxide impregnation Sep. 22, 1981
4288422 Method of preparing chalcogenides of group VIII by low temperature precipitation from monaqueous solution, the products produced by said method and their use as catalysts Sep. 8, 1981
4288347 Novel catalyst for dealkylating alkyl benzenes and fractions of aromatized benzines by conversion with steam Sep. 8, 1981
4280929 Attrition resistant-higher active component fluid bed catalysts Jul. 28, 1981
4279777 Molybdenum-copper-tin catalysts Jul. 21, 1981
4268448 Process for the production of maleic anhydride May. 19, 1981

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