Alkylation using zeolite SSZ-25

Details Alkylation using zeolite SSZ-25 Alkylation using zeolite SSZ-25

1991-08-15

1992-09-22

Pal, Asok

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

423326, C07C 266

Patent

active

051498944

ABSTRACT:
A process for the alkylation of an aromatic hydrocarbon which comprises contacting the aromatic hydrocarbon with a C.sub.2 to C.sub.4 olefin alkylating agent under at least partial liquid phase conditions, and in the presence of a catalyst comprising zeolite SSZ-25. The invention also provides a process for producing a reduced benzene content gasoline blend stock. A benzene-containing light hydrocarbon stream having less than 50 weight present benzene is contacted with a C.sub.2 -C.sub.4 olefin stream in an alkylation zone containing an SSZ-25 catalyst under alkylation conditions to produce an alkylated light hydrocarbon stream with reduced benzene content. The alkylated light hydrocarbon stream is then usable as gasoline blend stock.

REFERENCES:
patent: 4826667 (1989-05-01), Zones et al.
patent: 4891458 (1990-01-01), Innes et al.
patent: 4950823 (1990-08-01), Harandi et al.
patent: 4954325 (1990-09-01), Rubin
patent: 4992606 (1991-02-01), Kushnerick et al.
Soc Npra/paper/AM-88-44 "Alkylation of FCC off Gas Olefins with Aromatics Via Catalytic Distillation" by Elwyn E. Partin, Mar. 22, 1988, 7 Pages.
Journal Catalysis, vol. 109, pp. 212-216, (1988) W. W. Kaeding et al.

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