Cogeneration of isobutylene plus MTBE from crude t-butanol/metha

Details Cogeneration of isobutylene plus MTBE from crude t-butanol/metha Cogeneration of isobutylene plus MTBE from crude t-butanol/metha

1992-12-21

1994-05-17

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4109

Patent

active

053130065

ABSTRACT:
Disclosed is an improvement in a method for cogeneration of isobutylene and MTBE by etherification of tBA/MeOH over an ion-exchange resin which allows for more complete conversion of the remaining tBA fraction and comprises a second step consisting essentially of recovering the MTBE from the primary fractionator as an overhead fraction and etherifying the bottoms from the primary fractionator over an inorganic acid catalyst comprising a crystalline aluminosilicate faujasite-type Y-zeolite modified with a compound selected from a fluoride-containing compound including hydrofluoric acid, ammonium fluoride, fluorosulfonic acids and their cogeners and triflic anhydride at a temperature of greater than 120.degree. C.

REFERENCES:
patent: 4886918 (1989-12-01), Sorenson
patent: 4906787 (1990-03-01), Huang et al.
patent: 4943545 (1990-07-01), Chang et al.
patent: 5162592 (1992-11-01), Knifton et al.
Rozhkov et al., Prevzasch Uylevodorsdov Kislotno-Oshovn, Geterogennyth Katal, Tezisy Dokli Vses Kouf 1977 pp. 150-152.

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