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US 5,414,184 AGranted
Alkane disproportionation
AssigneePhillips Petroleum Company
InventorsAn-hsiang Wu, Bruce B. Randolph, Marvin M. Johnson
Life of this patent
Estimating the term…
Abstract
C.sub.4 -C.sub.15 alkanes (preferably C.sub.4 -C.sub.8 alkanes) are disproportionated in the presence of at least one alkylaluminum chloride (preferably isobutylaluminum dichloride), at least one chloroalkane (preferably carbon tetrachloride), and at least one solid material (selected from a group comprising alumina, silica, aluminosilicates, various other aluminum compounds, various boron compounds, and sulfonated styrene polymers).
Claims20
An alkane disproportionation process comprising the steps of:
- (1) mixing a liquid feed which comprises at least one feed alkane containing 4-15 carbon atoms per molecule with at least one alkylaluminum chloride and at least one chloroalkane,
- (2) contacting the mixture obtained in step (1) with a solid material selected from the group consisting of alumina, silica, silica-alumina, clays, zeolites, aluminum phosphate, aluminum oxide/phosphate, aluminum borate, aluminum oxide/borate, aluminum sulfate, aluminum oxide/sulfate, sulfonated styrene polymers and mixtures thereof, at effective disproportionation conditions so as to produce a disproportionation product,
- wherein said disproportionation product comprises said at least one feed alkane at a concentration which is lower than the concentration of said at least one feed alkane in said feed,
- wherein said disproportionation product contains at least one higher-boiling, alkane containing more carbon atoms per molecule than said feed alkane and at least one lower-boiling alkane containing fewer carbon atoms per molecule than said feed,
- and wherein the concentrations of said at least higher-boiling alkane and of said at least one lower-boiling alkane are higher in said disproportionation product than in said feed;
- and
- (3) recovering said at least one higher-boiling alkane and saint at least one lower-boiling alkane from said disproportionation product.
4 more elements
An alkane conversion process comprising the steps of:
- (1) mixing a liquid feed which comprises at least one feed alkane containing 4-8 carbon atoms per molecule with at least one alkylaluminum chloride having the general formula of R.sub.x AlCl.sub.3-x, wherein x is 1 or 2, and each R is independently selected from the group consisting of alkyl radicals consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl and branched pentyl radicals, and said at least one chloroalkane is selected from the group consisting of dichloromethane, chloroform, carbon tetrachloride, 1,1-dichloroethane, 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1-dichloropropane, 2,2-dichloropropane, 1-chlorobutane and 2-chloro-2-methylbutane;
- (2) contacting the mixture obtained in step (1) with a solid material selected from the group consisting of alumina, silica, silica-alumina, clays, zeolites, aluminum phosphate, aluminum oxide/phosphate, aluminum borate, aluminum oxide/borate, aluminum sulfate, aluminum oxide/sulfate, sulfonated styrene-divinylbenzene copolymers and mixtures thereof, at effective disproportionation conditions so as to produce a disproportionation product,
- wherein said disproportionation product comprises said at least one feed alkane at a concentration which is lower than the concentration of said at least one feed alkane in said feed,
- wherein said disproportionation product contains at least one higher-boiling alkane containing more carbon atoms per molecule than said feed alkane and at least one lower-boiling alkane containing fewer carbon atoms per molecule than said feed,
- and wherein the concentrations of said at least one higher-boiling alkane and of said at least one lower-boiling alkane are higher in said disproportionation product than in said feed;
- and
- (3) recovering said at least one higher-boiling alkane and said at least one lower-boiling alkane from said disproportionation product.
4 more elements
Dependencies are inferred from the claim text.