Role of Promoters on the Acrolein Ammoxidation Performances of BiMoOx

Ammoxidation of acrolein to acrylonitrile was studied using multicomponent (MC) BiMoO x catalysts in the presence of ammonia and oxygen. The MC catalysts containing bivalent and trivalent metal promoters were found to be highly active and selective to acrylonitrile. The corresponding MC catalysts we...

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Bibliographic Details
Published in:Journal of the American Oil Chemists' Society 2016-03, Vol.93 (3), p.431-443
Main Authors: Ghalwadkar, Ajay, Katryniok, Benjamin, Paul, Sébastien, Mamede, Anne-Sophie, Dumeignil, Franck
Format: Article
Language:English
Subjects:
Acrolein
Acrylonitrile
Agriculture
Ammoxidation
Biomaterials
Biotechnology
Chemistry
Chemistry and Materials Science
Food Science
Glycerol
Industrial Chemistry/Chemical Engineering
Multicomponent catalysts
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Summary:Ammoxidation of acrolein to acrylonitrile was studied using multicomponent (MC) BiMoO x catalysts in the presence of ammonia and oxygen. The MC catalysts containing bivalent and trivalent metal promoters were found to be highly active and selective to acrylonitrile. The corresponding MC catalysts were characterized by X-ray diffraction, nitrogen physisorption, X-ray photoelectron spectroscopy, ICP-MS and UV–visible diffuse reflectance spectroscopy. It was observed that, among the bivalent cations, the catalysts containing both Co–Ni showed superior performances due to the presence of the metastable β -Co x Ni 1− x MoO 4 phase. The presence of a trivalent cation, and especially of iron, promoted the formation of both the γ -Bi 2 MoO 6 active phase and the active β -phase of bivalent metal molybdate. Further, optimization of the reaction conditions enabled the achievement of a 59 % acrylonitrile yield.
ISSN:0003-021X
1558-9331
DOI:10.1007/s11746-015-2785-2