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Efficient method for the synthesis of fatty acid amide from soybean oil methyl ester catalysed by modified CaO
Author(s) -
Zhang Jie,
Cai Dan,
Wang Shanshan,
Tang Ying,
Zhang Zhao,
Liu Ya,
Gao Xiaoqing
Publication year - 2014
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21948
Subject(s) - diethanolamine , catalysis , yield (engineering) , ethanolamine , soybean oil , chemistry , amide , organic chemistry , amine gas treating , fatty acid methyl ester , reaction conditions , materials science , biodiesel , food science , metallurgy
A new method for the heterogeneous synthesis of ethanolamide from soybean oil methyl ester and monoethanolamine/diethanolamine has been established by using CaO and modified CaO as the solid basic catalyst. As the results show, the commercial CaO catalyst gives a high yield (80.2%) of monoethanolamide with high purity at a ratio of methyl ester to amine of 1: 2 after 3 h under the reaction temperature of 130°C over modified CaO. The yield was greatly enhanced to 96.3% after commercial CaO was modified by benzyl bromide in a simple way. Moreover, this catalyst shows a promising future in providing an environmentally clean process for the industrial applications. The effects of modification and reaction conditions on yields as well as the possible reaction mechanism were discussed. Further investigation indicated that the structure of ethanolamine has a great effect on the yield of monoethanolamide.