摘要:
A process is provided for producing amines from paraffin feedstocks containing sulfur impurities deleterious to nitration and hydrogenation of the paraffin to amines by nitrating a paraffin charge substantially free of sulfur compounds to produce a mixture containing paraffin, nitroparaffin and by-products, hydrogenating the nitroparaffin in the mixture to an amine, recovering the amine from the paraffin and by-products, introducing and hydrogenating a paraffin feedstock containing substantial amounts of sulfur compounds, hydrogenating the mixture of paraffin and by-products, and recycling the hydrogenated feedstock and hydrogenated mixture as paraffin charge to the nitration step.
摘要:
In a hydroalkylation process, spent catalysts, containing active metals such as cobalt or nickel on an acidic oxide support such as a silica-alumina cracking catalyst, are regenerated by heating to regeneration temperature in the presence of hydrogen.
摘要:
ALKYLAROMATIC HYDROCARBONS ARE DISPROPORTIONATED AND ISOMERIZED IN THE PRESENCE OF A CATALYST COMPOSED OF A MEMBER OF GROUP VI-B OF THE PERIODIC CHART, ALUMINA AND FLUORINE WHERE THE CATALYST IS PREPARED BY CONTACTING A COMPOSITE OF ALUMINA HAVING ASSOCIATED THEREWITH A MEMBER OF GROUP VI-B WITH A COMBINATION OF (1) HYDROGEN OR CARBON MONOXIDE AND (2) SULFUR HEXALFLUORIDE, SULFURRY FLUORIDE OR THIONYL FLUORIDE AT A TEMPERATURE OF FROM ABOUT 200 TO 1200*F.
摘要:
CLINOPTILOLITE, A NATURAL ZEOLITE, AFTER BEING SUBJECTED TO ACID LEACHING, POSSESSES CATALYTIC PROPERTIES FOR HYDROCARBON CONVERSION. IN PARTICULAR, THIS CATALYST WHEN COMBINED WITH A GROUP VIII AND/OR GROUPVI-B METAL IS USEFUL AS A HYDRODEWAXING CATALYST FOR PROCESSING WAXY HYDROCARBON DISTILLATES.
摘要:
A process for producing secondary alkyl primary amines from nparaffins where a portion of the paraffin is nitrated to nitroparaffin along with the formation of nitrated and oxygenated by-products, where the nitroparaffin is essentially completely hydrogenated to the amine, and where the amine is separated from a mixture composed of unreacted paraffin and by products, which comprises catalytically hydrogenating the mixture composed of paraffin and by-products in the presence of a catalyst composed of alumina and a Group VIII metal at a temperature of from about 600* to 750*F. and recycling the hydrogenated product for nitration with the n-paraffin.
摘要:
A METHOD FOR PREPARING A HYDROCARBON CONVERSION CATALYST COMPOSED OF ALUMINA AND CHLORINE OR BROMINE BY CONTACTING ALUMINA WITH AN ACTIVATOR SYSTEM COMPRISING CHLORINE OR BROMINE AND AN INORGANIC SULFUR COMPOUND SELECTED FROM THE GROUP HYDROGEN SULFIDE AND COMPOUNDS CORROESPONDING TO THE FORMULA SMX2. THE CATAYST MAY ADDITIONALLY INCLUDE A METAL SUCH AS APLATINUM, PALLADIUM, RUTHENIUM OR RHODIUM. THE CATALYSTS SO PREPARED ARE USEFUL IN SUCH HYDROCARBON CONVERSION PROCESSES AS ISOMERIZATION, CRACKING, HYDROCRACKING, REFORMING, ALKYLATION, DEHYDROGENATION, DISPROPORTIONATION AND POLYMERIZATION.
摘要:
A HYDROCARBON CONVERSION PROCESS IN WHICH A HYDROCARBON IS CONTACTED AT CONVERSION CONDITIONS WITH A CATALYST COMPRISING ALUMINA AND CHLORINE WHEREIN AT LEAST A PORTION OF SAID CHLORINE IS INTRODUCED INTO SAID CATALYST BY CONTACTING SAID ALUMINA AT ELEVATED TEMPERATURE WITH A SELECTED ORGANIC CHLORINE IN THE PRESENCE OF AN AMOUNT OF OXYGEN SUFFICIENT TO CONVERT ALL OF THE CARBON IN SAID ORGANIC CHLORIDE TO CARBON DIOXIDE. IN ADDITION, THE CATALYST MAY CONTAIN A METAL SELECTED FROM THE GROUP CONSISTING OF RUTHENIUM, RHODIUM, PALLADIUM AND PLATINUM. THE CATALYST SO PREPARED IS USEFUL IN HYDROCARBON CONVERSION PROCESSES AS ISOMERIZATION, HYDROCRACKING, ALKYLATION, HYDROGENATION, AND POLYMERIZATION.
摘要:
Spent catalysts, containing active metals such as cobalt or nickel on an acidic oxide support such as a silica-alumina cracking catalyst, are regenerated by heating to regeneration temperature in the presence of hydrogen.
摘要:
This invention concerns the use of solubilized homogeneous ruthenium catalysts to initially and sequentially reduce the nitro group in mononitroaromatic substrates to the corresponding amine. The reduction must be carried out in a two component mixture consisting essentially of the mononitroaromatic and a mononitro ortho-substituted polyalkylaromatic component. In order to minimize the reduction of said nitropolyalkylaromatic component, the reduction should be halted when between about 80 to 95 % of the mononitroaromatic substrate present is reduced to the corresponding amine.