摘要:
In one embodiment, C.sub.4 -C.sub.10 alkanes and/or C.sub.5 -C.sub.10 cycloalkanes are isomerized in the presence of a catalyst which has been prepared by heating AlCl.sub.3, at least one aluminum sulfate-containing support material and at least one chlorinated hydrocarbon (preferably CCl.sub.4) at about 40.degree.-90.degree. C., followed by separating the formed solid from the chlorinated hydrocarbon.In another embodiment, C.sub.5 -C.sub.10 cycloalkane(s) are isomerized in the presence of a catalyst which has been prepared by heating AlCl.sub.3, at least one sulfur-containing acid (H.sub.2 SO.sub.4 and/or ClSO.sub.3 H and/or FSO.sub.3 H and/or CF.sub.3 SO.sub.3 H) and at least one chlorinated hydrocarbon (preferably CCl.sub.4) at about 40.degree.-90.degree. C., followed by separating the formed solid from the chlorinated hydrocarbon.
摘要:
A composition is prepared by mixing at least one aluminum halide (preferably AlCl.sub.3), at least one copper(II) salt (preferably CuCl.sub.2), calcium aluminate and at least one alcohol (preferably ethanol), shaping the mixture, and drying the shaped particles. The thus-obtained catalyst composition can be employed as a catalyst in the isomerization of alkanes and/or cycloalkanes.
摘要:
The percentage conversion of isomerizable cycloparaffins is improved as compared to prior art methods by contacting the isomerizable cycloparaffins with a compound of aluminum halide intercalated in grahite and a hydrogen halide to form a catalytically active composition with a continuation of contact of the isomerizable cycloparaffins and the catalytically active composition to achieve substantial isomerization of the cycloparaffins.
摘要:
Partially deactivated hydrocarbon conversion catalysts comprising (a) one or more Lewis acids of the formula MX.sub.n where M is a metal selected from Group III-A, IV-B, V or VI-B elements of the Periodic Table, X is a halogen, n is the ratio of halogen atoms to atoms of M and varies from 1-8, and (b) a strong Bronsted acid are contacted with a hydrocarbon feedstock to recover the active or potentially active catalyst species from the partially deactivated catalyst stream prior to regeneration. In addition, potential organic and inorganic catalyst poisons present in said feedstock are removed therefrom during said contacting prior to introducing said feedstock into a hydrocarbon conversion process.
摘要:
Process for the conversion of aromatic hydrocarbons. Especially useful for reaction of an alkylating agent, preferably propylene, with an aromatic hydrocarbon. Novel feature is use of a catalyst system comprising TiF.sub.4 and a metal oxide which possesses surface hydroxyl groups.
摘要:
Normal paraffins are dehydrogenated to form normal olefins by contacting them at dehydrogenation conditions with a catalytic composite comprising a combination of a platinum group component, a rhenium component and an alkali or alkaline earth component with an alumina carrier material. A specific example of the dehydrogenation method disclosed herein is a dehydrogenation of long-chain normal paraffins with a catalyst comprising a combination of a platinum component, a rhenium component, and an alkali or alkaline earth component with an alumina carrier material in amounts sufficient to result in a catalytic composite containing, on an elemental basis, 0.01 to 1 wt. % platinum, 0.01 to 1 wt. % rhenium, and 0.01 to 5 wt. % of the alkali or alkaline earth metal.
摘要:
DEACTIVATED, SUPPORTED HYDROGEN FLUORIDE-ANTIMOONY PENTAFLUORIDE CATAYLST IS REJUVENATED BY CONTACTING THE CATALYST WITH LIQUID HYDROGEN FLUORIDE AND THEN WITH A LIQUID SOLUTION OF HF-ANTIMONY PENTAFLUORIDE.
摘要:
IN THE PROCESS FOR THE PREPARATION OF DIMETHYLDECALINS BY CATALYTICALLY REACTING DECALIN WITH ETHYLENE IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, THE IMPROVEMENT WHICH COMPRISES OPERATING THE PROCESS IN TWO STEPS: (A) A CATALYTIC ALKYLATION REACTION OF CIS-DECALIN WITH ETHYLENE AT A TEMPERATURE RANGING BETWEEN -50* AND 50*C, AND SUBSEQUENTLY (B) AN ISOMERIZATION REACTION OF THE RESULTING PRODUCT SYSTEM AT A TEMPERATURE RANGING BETWEEN-20* AND 80*C. IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST BUT ABSENCE OF ETHYLENE.