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Ammoximation of methyl ethyl ketone with H 2 O 2 and ammonia over TS‐1
Author(s) -
Wang Li,
Zhang Jie,
Mi Zhentao
Publication year - 2006
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1413
Subject(s) - ketone , chemistry , hydrogen peroxide , ammonia , methyl isobutyl ketone , autoclave , selectivity , organic chemistry , catalysis , ethyl acetate , nuclear chemistry
The ammoximation of methyl ethyl ketone and hydrogen peroxide to form methyl ethyl ketoxime was studied over zeolites (TS‐1) in the temperature range 308–373 K. The reaction was carried out in a batch autoclave at autogenous pressure. The conversion of methyl ethyl ketone and the selectivity to methyl ethyl ketoxime can reach 99% and approximately 100%, respectively, and the by‐products were the small amounts of corresponding methyl ethyl ketazine and trace amounts of unidentified compounds. Important factors were the reaction temperature, solvents and slow addition of hydrogen peroxide. The molar ratio of NH 3 to ketone had no significant effect on the conversion of methyl ethyl ketone, but increase in the ratio of NH 3 to ketone had a beneficial effect on selectivity. Copyright © 2006 Society of Chemical Industry