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Selectivity control in substituted fatty amines synthesis from esters or nitriles in the presence of bifunctional catalysts
Author(s) -
Barrault J.,
Brunet S.,
SuppoEssayem N.,
Piccirilli A.,
Guimon C.
Publication year - 1994
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540543
Subject(s) - catalysis , chemistry , bifunctional , selectivity , copper , inorganic chemistry , nitrile , methanol , adsorption , ammonia , hydrogen , x ray photoelectron spectroscopy , barium , organic chemistry , chemical engineering , engineering
Copper chromite‐type catalysts, supported by alumina or graphite and promoted with barium, were used for the onestep synthesis of tertiary fatty amines [R 2 NCH 3 or RN(CH 3 ) 2 ] from ester, acid or nitrile and ammonia, methanol and hydrogen. The surface composition of the catalysts, studied by X‐ray photoelectron spectroscopy and by adsorption experiments, showed that there was a correlation between selectivity and the presence of a well‐dispersed CuCrO 2 phase, stabilized with barium. Moreover, the elements influencing the stability of the copper catalysts were also studied, and the promoter or/and the support increased the copper surface area and the stability of the catalyst in the presence of water or ammonia.