C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 255/03 (2006.01) C07C 253/24 (2006.01) C07C 253/26 (2006.01) C07C 255/46 (2006.01)
Patent
CA 2184797
Acetonitrile is produced directly from alkanes or alkenes by ammoxidation over a catalyst which is a silica-alumina exchanged with a metal of Period 4, Groups VIIB and VIII of the Periodic Table. The silica-alumina can be amorphous but is preferably crystalline zeolite. Preferred zeolites are ZSM-5, beta and NU-87. Cobalt is the favored metal for exchange. Particularly good results are obtained when the zeolite has been modified with a surface coating of silicon oxides prior to the metal exchange. Ammoxidation of alkanes produce alkenes as a byproduct which can be recycled to the reaction to increase nitrile yield.
Armor John Nelson
Li Yuejin
Air Products And Chemicals Inc.
Mcfadden Fincham
LandOfFree
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