Cogeneration of isobutylene plus mtbe from crude...

Details Cogeneration of isobutylene plus mtbe from crude... Cogeneration of isobutylene plus mtbe from crude...

C - Chemistry, Metallurgy

07

C

C07C 43/04 (2006.01) C07C 1/20 (2006.01) C07C 1/24 (2006.01) C07C 11/09 (2006.01) C07C 41/01 (2006.01) C07C 41/09 (2006.01)

Patent

CA 2092969

THE COGENERATION OF ISOBUTYLENE PLUS MTBE FROM CRUDE t-BUTANOL/METHANOL FEEDSTOCKS (D#81,164-F) ABSTRACT OF THE DISCLOSURE 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°C.

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