Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1995-11-13
1997-07-15
Burn, Brian M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C07C20960
Patent
active
056485468
ABSTRACT:
The invention relates to a method for manufacturing tert-butylamine from isobutene and ammonia in the presence of a silica alumina catalyst. The catalyst is in acid form, has an Si/Al ratio that has been adjusted by steam dealumination, has a crystallinity of at least 95%, and has an Na.sub.2 O content of less than 0.2 wt. %. The reaction is preferably conducted in the gas phase, with unreacted ammonia and unreacted isobutene being recycled into the reaction process. The selectivity of the catalyst for the formation of tert-butylamine is at least 99.5%.
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Breck et al., "Zeolite Chemistry II. The Role of Aluminum in the Hydrothermal Treatment of Ammonium-Exchanged Zeolite Y, Stabilization," in Molecular Sieves-II, Katzer, Ed., American Chemical Society: Washington, DC (1977).
"Heterogeneous Acid-Catalyzed Amination of Isubutene to tert-Butylamine", Journal of Organic Chemistry, Bd. 53. Nr. 19, Sep. 16, 1988, Washington US, pp. 4594-4596.
"Direct Amination of 2-Methylpropene with Amonia Into t-Butylamine on Proton-Exchanged ZSM-5 Zeolite Catalyst", Chemistry Letters, Nov. 6, 1991, Tokyo JP., M. Tabata et al., pp. 1027-1028.
Bergfeld Manfred
Nywlt Martin
Akzo Nobel N.V.
Burn Brian M.
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