Abstract:
The severity of hydrogenation conditions of temperature, pressure and catalyst consumption required by high molecular weight elastomeric, thermoplastic and thermosetting polymers can be substantially reduced by pretreating the polymer with molecular sieves before hydrogenation.
Abstract:
PIPE THREAD LUBRICANTS COMPRISING MINERAL OIL, METAL DUST SELECTED FROM LEAD, ZINC, OR ALLOYS THEREOF, AND ALKALINE EARTH METAL SOAP AND CONTAINING A STABILIZING AMOUNT OF AN ORGANIC SULFIDE HAVING THE FORMULA R-SN-R1 WHEREIN R AND R1 ARE HYDROCARBON RADICALS OF 2 TO 20 CARBON ATOMS AND N IS AN INTEGER OF FROM 2 TO 4.
Abstract:
A process for removing dehydrogenation catalyst poisons from paraffin and steam feedstreams by pretreating the feedstreams with Group VIII metal oxides. Undesirable silica is removed from turbo-electric generator steam feedstreams through the process of pretreating said steam with Group VIII metal oxide.
Abstract:
A crude hydrocarbon oil or gas oil is cracked with a ''''used'''' cracking catalyst having a high metal content under conditions of severity to produce gasoline and lighter products to an optimum extent. Effluent is cooled to obtain a gasoline fraction with large amounts of H2 and light gases and a heavier product stream which is recycled to the cracking operation. Gasoline and higher components are dehydrosulfurized, using generated hydrogen for the purpose. Thus treated stream is cooled to obtain a liquid and a gas stream. A portion of the gas stream is used as a hydrogenrich gas for the catalytic hydrodesulfurization. Another portion is treated to remove H2S therefrom and thus treated gas and liquid obtained upon the cooling, after some preheat, are passed to a synthetic natural gas reactor, preferably after further treatment to produce a stream containing less than about one part per million of sulfur. The process is self-sustaining in hydrogen. Coke deposited on catalyst on regeneration yields sufficient heat to supply steam requirement for Synnat process.
Abstract:
FURANS ARE SELECTIVELY HYDROGENATED TO MIXTURES COMPRISING TERRAHYDROFURAN (THF) AND SINGNIFICANT AMOUNTS OF 2,3-DIHYDROFURANS BY CONTACT WITH HYDROGEN AND A RUTHENIUM CATALYST IN THE PRESENCE OF AN ORGANIC NITROGEN COMPOUND WHICH FUNCTIONS AS A REACTION MODIFIER.
Abstract:
A METHOD FOR THE FORMATION OF BICYCLOOLEFINS FROM CYCLOALKADIENES WHICH INVOLVES CONTACTING THE CYCLOALKADIENE WITH HYDROGEN IN THE PRESENCE OF A REDUCED TUNGSTEN-ARENIC CATALYST, PREFERABLY ON A SUPPORT.
Abstract:
1. A PROCESS FOR SELECTIVELY HYDROGENATING THE RING UNSATURATION OF HETEROCYCLIC SULFUR-CONTAINING COMPOUNDS CONTAINED IN A HYDROCARBON FEEDSTREAM WHICH COMPRISES CONTACTING SAID FEEDSTREAM WITH HYDROGEN AND A MOLYBDENUM-ARSENIC CATALYST CONSISTING ESSENTIALLY OF ABOUT 2 TO 20 WEIGHT PERCENT MOLYBDENUM AND A MOLYBDENUM TO ARESNIC WEIGHT RATIO OF ABOUT 1:1 TO ABOUT 5:1 AND AN INORGANIC OXIDE SUPPORT UNDER HYDROGENATION CONDITIONS, SAID CATALYST HAVING BEEN REDUCED WITH HYDROGEN PRIOR TO SAID CONTACTING.
Abstract:
A METHOD AND CATALYSTS FOR SELECTIVE HYDROGENTION AND ISOMERIZATION WHICH INVOLVES CONTACTING A FEEDSTREAM WITH HYDROGEN AND WITH VARIOUS SUPPORTED CATALYSTS OF METALLIC ARSENIDES AND ANTIMONIDES, WITH CARBON MONOXIDE BEING OPTINALLY INTRODUCED INTO THE REACTION AS A MODIFIER.
Abstract:
A MANUFACTURING METHOD FOR THE PURIFICATION AND PRODUCTION OF OLEFINS THROUGH SELECTIVE ABSORPTION OF ACETYLENES IMPURTIES WITH A LIQUID ABSORBENT AND HYDROGENATING THE RESULTING ACETYLENES-ENRICHED LIQUID ABSORBENT WITH A GROUP VIII CATALYST, CONVERTING THEREBY THE ACETYLENES TO MONOOLEFINS HAVING THE SAME NUMBER OF CARBON ATOMS PER MOLECULE AS THE CONVERTED ACETYLENIC COMPOUND.
Abstract:
CYCLOALKYLAROMATICS ARE PRODUCED FROM AROMATIC HYDROCARBONS IN THE PRESENCE OF HYDROGEN AND A RHODIUMACTIVE CLAY CATALYST. PREFERABLY THE CATALYST HAS NOT BEEN HEATED UNDER CALCINATION CONDITIONS PRIOR TO USE. IN A SPECIFIC EMBODIMENT, BENZENE IS CONVERTED TO CYCLOHEXYLBENZENE WITH GOOD SELECTIVITY OVER AN ACTIVE CLAY IMPREGNATED WITH RHODIUM TRICHLORIDE WHEREIN THE SOLVENT HAS BEEN REMOVED UNDER CONDITIONS WHICH DO NOT SUBJECT THE CATALYST COMPOSITION TO CALCINATION TEMPERATURE.