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US 5,847,254 AGranted
Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites
AssigneeHuntsman Petrochemical Corporation
InventorsJohn F. Knifton, Prakasa Rao Anantaneni, P. Eugene Dai
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Abstract
This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing mordenite is prepared typically by treatment with an aqueous hydrogen fluoride solution. The benzene alkylation may be conducted using reactive distillation.
Claims13
A process useful for the production of monoalkylated benzene, comprising:
- contacting benzene with an olefin of from about 8 to about 30 carbons in the presence of a catalyst consisting essentially of fluorine-containing mordenite under conditions such that monoalkylated benzene is formed;
- wherein the mordenite has been treated by contacting mordenite with an aqueous hydrogen fluoride solution, wherein the hydrogen fluoride in the aqueous solution has a concentration in the range from about 0.1 to about 1 percent by weight.
A process useful for the production of monoalkylated benzene, comprising:
- introducing a feed comprising olefin having about 8 to about 30 carbons and benzene into a catalyst consisting essentially of fluorine-containing mordenite catalyst bed under conditions such that monoalkylated benzene is produced;
- allowing benzene, olefin, and monoalkylated benzene to descend into a reboiler from the catalyst bed;
- removing monoalkylated benzene from the reboiler;
- and
- heating the contents of the reboiler such that benzene refluxes to further contact the fluorine-containing mordenite;
- wherein the mordenite has been treated by contacting mordenite with an aqueous hydrogen fluoride solution, wherein the hydrogen fluoride in the aqueous solution has a concentration in the range from about 0.1 to about 1 percent by weight.
3 more elements
Dependencies are inferred from the claim text.