Reaction network of aldehyde hydrogenation over sulfided Ni–Mo/Al 2O 3 catalysts

A reaction network of aldehyde hydrogenation over NiMoS/Al 2O 3 catalysts was studied with aldehydes with straight and branched carbon chains and different chain lengths as feed materials. The reactions in the gas phase and the liquid phase were compared. The main reaction in the aldehyde hydrogenat...

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Bibliographic Details
Published inJournal of catalysis Vol. 231; no. 1; pp. 20 - 32
Main Authors Wang, Xueqin, Saleh, Ramzi Y., Ozkan, Umit S.
Format Journal Article
LanguageEnglish
Published Elsevier Inc 2005
Subjects
Aldehyde hydrogenation
Aldol condensation
Sulfided Ni–Mo catalysts
Sulfided Ni–Mo catalysts
Aldehyde hydrogenation
Aldol condensation
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Summary:A reaction network of aldehyde hydrogenation over NiMoS/Al 2O 3 catalysts was studied with aldehydes with straight and branched carbon chains and different chain lengths as feed materials. The reactions in the gas phase and the liquid phase were compared. The main reaction in the aldehyde hydrogenation process is the hydrogenation of the C O double bond, which takes place over the coordinatively unsaturated sites. The major side reactions are self-condensation of aldehydes and condensation of aldehydes with alcohols. Both reactions involve α-hydrogen and are primarily catalyzed by acid–base bifunctional sites over the exposed Al 2O 3 surfaces.
ISSN:0021-9517
1090-2694
DOI:10.1016/j.jcat.2004.12.010