摘要:
An improved catalyst comprising a refractory support and platinum promoted with both gold and germanium exhibits increased activity and selectivity characteristics for the dehydrocyclization and reforming of hydrocarbons.
摘要:
A process for preparing a partly sulphided metallic supported catalyst is described with especially uniform distribution of sulphur by contacting the catalyst either during or after precipitation with flowers of sulphur in aqueous medium at pH 7 to 11. The atomic ratio of sulphur to nickel at the surface of the nickel is preferably from 0.33 to 0.70 for hydrogenation of unsaturated fatty acid derivatives.
摘要:
A process for coating a refractory oxide which involves impregnating a refractory oxide support with a solution of a salt of ruthenium or rhodium alone or in combination with a salt of at least one of platinum, palladium, osmium or iridium while maintaining a highly acid solution having a pH, for example, of about 0.7 to about 2.2 and then contacting the impregnated refractory oxide with H2S to precipitate the metal sulfide on the refractory support and the product resulting therefrom.
摘要:
METHOD OF ACTIVATING THE HYDROTREATING CATALYST FOR PETROLEUM FRACTIONS WHICH COMPRISES CONTACTING A SILICAALUMINA OR ALUMINA CATALYST CARRYING MOLYBDENUM OR TUNGSTEN AS A XOMPONENT OF THE ACTIVE METALS EITHER FOLLOWING OR SIMULTANEOUSLY WITH THE SULFURIZATION WITH A HALOGENATED HYDROCARBON CONTAINING FLUORINE AT A TEMPERATURE FROM 100* TO 600* C. TO GIVE A FLUORINE CONTENT IN THE CATALYST FROM 0.1 TO 25% BY WEIGHT.
摘要:
A CATALYST, A METHOD FOR ITS PREPARATION, AND A METHOD OF PREPARING CATALYTIC COBALT MOLYBDATE, USEFUL FOR THE OOXIDATION OF OLEFINS TO THE CORRESPONDING UNSATURATED ALDEHYDES AND UNSATURATED CARBOXYLIC ACIDS RE PROVIDED. THE SOLID CATALYST IS IN THE FORM OF PARTICLES, EACH PERTICLE COMPRISING A FLUXED MIXTURE OF (A) CALCINED COBALT MOLYDBATE PARTICLES, (B) A TELLURIDE OF ARSENIC, BISMUTH OR ANTIMONY, AND (C) A MOLYBDENUM COMPOUND, SUCH AS MOLYBDENUM TRIOXIDE, WHICH IS VOLATILE TO AN EXTENT THAT SLOW MIGRATION WITHIN THE PELLET OCCURS AT ELEVATED TEMPERATURES. THE VOLATILE MOLYBDENUM COMPOUND, NON-CATALYTIC IN ITSELF, SURPRISINGLY GIVES A MUCH LONGER PRODUCTIVE LIFE TO THE CATALYST; THE CATALYST, IN SPITE OF THE DILUENT, IS MORE PRODUCTIVE PER UNIT OF TIME; AND THE ADDED PHYSICALLY SOFT COMPOUND DOES NOT MAKE THE PARTICLES FRAGILE. IN USE THE TELLURIUM CONTENT DIMINISHES, AND THE COMPOSITION OF THE CATALYST CHANGES SLOWLY IN OTHER WAYS.
摘要:
LUBRICATING OIL HYDROCRACKING PROCESS UTILIZING CATALYSTS COMPRISING (A) ONE METAL A CONSISTING OF NICKEL AND AT LEAST ONE METAL B SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN PRESENT ON A CARRIER IN AMOUNTS OF A LEAST ABOUT 0.01 GRAM-ATOM OF METAL A AND AT LEAST ABOUT 0.10 GRAM-ATOM OF METAL B PER 100 GRAMS OF CARIER; (B) AN ATOMIC RATION OF METAL A TO METAL B IN THE RANGE OF FROM ABOUT 0.10:1 TO ABOUT 0.75:1, AND (C) A CARRIER COMPOSED OF SILICA AND ZIRCONIA.
摘要:
A CATALYTIC COMPOSITE COMPRISING A COMBINATION OF A PLATINUM COMPONENT, A LEAD COMPONENT AND A HALOGEN COMPONENT WITH A PROOUS CARRIER MATERIAL IS DISCLOSED. THE PLATINUM AND HALOGEN COMPONENTS ARE PRESENT IN THE COMPOSITIE IN AMOUNTS, CALCULATED ON AN ELEMENTAL BASIS, OF ABOUT 0.01 TO ABOUT 2 WT. PERCENT PLATINUM AND ABOUT 0.1 TO ABOUT 3.5 WT. PERCENT HALOGEN, AD THE LEAD COMPONENT IS PRESENT IN AN ATOMIC RATIO TO THE PLATINUM COMPONENT OF ABOUT 0.05:1 TO ABOUT 0.9:1. MOREOVER, BOTH THE PLATINUM COMPONENT AND THE LEAD COMPONENT ARE UNIFORMLY DESPERSED THROUGHOUT THE POROUS CARRIER MATERIAL, AND SUBSTANTIALLY ALL OF THE PLATINUM IS PRESENT AS THE ELEMENTAL METAL AND SUBSTANTIALLY ALL OF THE LEAD IS PRESENT IN AN OXIDATION STATE ABOVE THAT OF THE ELEMENTAL METAL. THE PRINCIPAL UTILITY OF THE SUBJECT COMPOSITE IS IN THE CONVERSION OF HYDROCARBONS, PARTICULARLY IN THE REFORMING OF A GASOLINE FRACTION. A SPECIFIC EXAMPLE OF THE CATALYST DISCLOSED IS A COMBINATION OF A PLATINUM METAL COMPONENT, A LEAD OXIDE COMPONENT AND A HALOGEN COMPONENT WITH AN ALUMINA CARRIER MATERIAL WHEREIN THE PLATINUM AND LEAD COMPONENTS ARE UNIFORMLY DISPERSED THROUGHOUT THE CARRIER MATERIAL AND WHEREIN THE COMPOSITE CONTAINS 0.01 TO 2 WT. PERCENT PLATINUM, 0.1 TO 3.5 WT. PERCENT HALOGEN, AND AN ATOMIC RATIO OF LEAD TO PLATINUM OF 0.05:1 TO 0.9:1.
摘要:
This invention provides a catalyst composition for an oxidation reaction selected from the group consisting of ammoxidation of olefins to nitriles, oxidation of olefins to aldehydes and oxidative dehydrogenation of olefins (C4 - C8) to diolefins. The catalyst composition has the empirical formula: Fe10 Sb20 60 Me0.01 1 Te0.05 5 Q0.1 20 O40 177 wherein Me is V, Mo and W ; Q is Cu, Ag, Be, Mg, Ca, Sr, Ba, Zn, Cd, La, Ce and Al. The catalyst composition exhibits not only an improved catalytic activity in the reaction but also it shows desirable physical properties particularly fitted for a fluidized-bed reaction.
摘要:
A METHOD FOR PREPARING A HYDROCARBON CONVERSION CATALYST BY PROVIDING A COMPOSITE COMPOSED OF ALUMINA HAVING ASSOCIATED THEREWITH A GROUP VI-B OR VIII METAL OR COMPOUND AND CONTACTING THE COMPOSITE WITH AN ACTIVATOR SYSTEM COMPRISING OXYGEN AND AN ORGANIC FLUORIDE COMPOUND HAVING FROM 2 TO 16 CARBON ATOMS. THE CATALYST SO PREPARED IS USEFUL IN HYDROCARBON CONVERSION PROCESSES AS ISOMERIZATION, HYDROCRACKING, REFORMING, DEHYDROGENATION, DISPROPORTIONATION AND POLYMERIZATION.
摘要:
A PROCESS FOR THE REGENERATION OF SULFUR DEACTIVATED CATALYSTS BY CONTACT, OR REACTION, OF THE SAID CATALYST WITH METHANE. A CATALYST, OR CATALYST COMPOSITE, WHICH HAS BEEN POISONED, AND THEREBY DEACTIVATED, BY CONTACT WITH SULFUR IN SUFFICIENT CONCENTRATION AND EXPOSED TO OXYGEN TO FORM THE SULFATE, CAN BE REGENERATED BY CONTACT WITH METHANE. SUCH CATALYST REGENERATION TECHNIQUE FINDS PARTICULAR UTILITY IN SEMIREGENERATIVE TYPE REFORMING PROCESSES. REFORMING CATALYSTS, PARTICULARLY CATALYST COMPOSITES WHICH CONTAIN ALUMINA, E.G. NOBLE METAL ON AN ALUMINA BASE SUCH AS PLATINUM-ON-ALUMINA, WHICH HAS BEEN DEACTIVATED BY SULFUR COMPOUNDS CAN BE REGENERATED BY CONTACT WITH METHANE AT TEMPERATURES RANGING GENERALLY FROM ABOUT 700*F. TO ABOUT 1050*F., AND AT PRESSURES RANGING FROM ABOUT 15 P.S.I. TO ABOUT 300 P.S.I.