Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1996-11-25
1998-05-26
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
558315, C07C25324
Patent
active
057568022
ABSTRACT:
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 VIIA and VIII of the Periodic Table. The silica-alumina can be amorphous but is preferably crystalline zeolite. Preferred zeolite include ZSM-5, beta, NU-87 and USY. 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 or modified with a boron or phosphorous containing compound followed by calcination. Ammoxidation of alkanes produce alkenes as a byproduct which can be recycled to the reaction to increase acetonitrile yield.
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Armor John Nelson
Hohl Peter Charles
Li Yuejin
Air Products and Chemicals Inc.
Gourley Keith D.
Richter Johann
Sackey Ebenezer
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