Liquid phase alkylation process
AssigneeExxonMobil Chemical Patents Inc.
InventorsMatthew J. Vincent, Terry E. Helton, Ivy D. Johnson
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Abstract
The present invention provides a process for producing a monoalkylated benzene comprising the step of contacting benzene with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions to form said monoalkylated benzene and polyalkylated benzene, said catalyst composition comprising MCM-56 and a binder, such that the crystal/binder weight ratio in said catalyst composition is from about 20/80 to about 80/20, wherein said polyalkylated benzene comprises dialkylated benzene and trialkylated benzene, and the weight ratio of trialkylated benzene to dialkylated benzene is in the range from about 0.08 to about 0.12.
Claims18
A process for producing a monoalkylated benzene comprising the step of contacting benzene with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions to form said monoalkylated benzene and polyalkylated benzene, said catalyst composition comprising seeded MCM-56 and a binder, wherein the crystal/binder weight ratio in said catalyst composition is from about 20/80 to about 80/20, wherein said polyalkylated benzene comprises dialkylated benzene and trialkylated benzene, and the weight ratio of trialkylated benzene to dialkylated benzene is in the range from about 0.08 to about 0.12.
A process for producing a monoalkylated benzene comprising the steps of:
- (a) contacting benzene with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions to form said monoalkylated benzene and polyalkylated benzene, said catalyst composition comprising seeded MCM-56 and a binder selected from the group consisting of alumina, clay, silica and/or metal oxides, wherein the crystal/binder weight ratio in said catalyst composition is from about 20/80 to about 80/20, wherein said polyalkylated benzene comprises dialkylated benzene and trialkylated benzene, and the weight ratio of trialkylated benzene to dialkylated benzene is in the range from about 0.08 to about 0.12;
- and
- (b) contacting said polyalkylated benzene with additional benzene in the presence of a transalkylation catalyst to produce additional monoalkylated benzene, wherein said transalkylation catalyst comprises at least one crystalline molecular sieve selected from the group consisting of zeolite Beta, zeolite Y, mordenite, an MCM-22 family material, and mixtures thereof.
Dependencies are inferred from the claim text.