Abstract:
A CATALYST COMPRISED OF A URANIUM OXIDE AND AN OXIDE OF ONE OF PHOSPHORUS, ARSENIC, ANTIMONY, OR BISMUTH, ON A SUPPORT, IS EMPLOYED FOR DOUBLE-BOND ISOMERIZATION OF CYCLOALKADIENES, ALKENES, ALKYLCYCLOALKENES, ALKADIENES, AND THE LIKE.
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 method and catalyst for dehydrogenating cyclohexane and alkylsubstituted cyclohexanes to the corresponding aromatic compounds, the method involving contacting the cyclohexane or alkylsubstituted cyclohexane in the presence of hydrogen with a supported molybdenum-antimony catalyst.
Abstract:
Hydrogenation feedstock containing cyclopentadiene and dicyclopentadiene which is to be selectively hydrogenated to cyclopentene is vaporized at a temperature above that at which substantial formation of high boiling resin or resinlike residues occurs, prior to the introduction of the feedstock into the hydrogenation zone.
Abstract:
A METHOD FOR HYDROTREATING UNSATURATED HYDROCARBON FEEDSTREAMS CONTAINING MONOOLEFINS, DIOLEFINS, OR ACETYLENES BY CONTACTING THE FEEDSTREAM WITH AN IRON-CONTAINING CATALYST; THE IRON-CONTAINING HYDROTREATING CATALYST; AND A METHOD FOR PREPARING THE AFOREMENTIONED HYDROTREATING CATALYST.
Abstract:
A METHOD OF RESTORING ACTIVITY TO CRACKING CATALYSTS WHICH HAVE BEEN CONTAMINATED WITH METALS WHICH INVOLVES PASSIVATING THE METALS BY CONTACTING THEM WITH ANTIMONYCONTAINING COMPOUNDS AND RESTORING THE CATALYST ACTIVITY THEREAFTER BY CONVENTIONAL CALCINATION TECHNIQUES.