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Role of ZnO in Cu/ZnO/Al2O3 catalyst for hydrogenolysis of butyl butyrate

Paper ID Volume ID Publish Year Pages File Format Full-Text
51848 46856 2011 5 PDF Available
Title
Role of ZnO in Cu/ZnO/Al2O3 catalyst for hydrogenolysis of butyl butyrate
Abstract

For hydrogenolysis of butyl butyrate (BB), a series of Cu/ZnO/Al2O3 catalysts with different metal compositions were prepared, and characterized by N2O chemisorption for measuring Cu surface area and by chromatographic experiment for determining the heat of BB adsorption. As a result, the presence of ZnO in Cu-based catalysts was found to enhance the catalytic activity of Cu due to dual function of ZnO. The Cu surface area was linearly correlated with the butanol productivity, demonstrating that ZnO exerts the structural function in Cu/ZnO/Al2O3 catalysts. Additionally, the role of ZnO as a chemical contributor was revealed such that its presence leads to lower activation energy of the surface reaction, thus resulting in higher Cu catalytic activity obtained at a low temperature such as 200 °C. Consequently, optimizing the Cu/Zn ratio in Cu/ZnO/Al2O3 catalyst is required to tune its structural and chemical characteristics of Cu metals, and thus to obtain a higher activity on the hydrogenolysis reaction.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► The presence of ZnO in Cu-based catalysts enhances the Cu activity in the reaction. ► ZnO acts as both a structural and a chemical promoter in Cu/ZnO/Al2O3 catalysts. ► Optimizing the Cu/Zn ratio in the catalyst is required to obtain a higher activity.

Keywords
Hydrogenolysis; Butyl butyrate; Cu/ZnO/Al2O3 catalyst; ZnO function
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Role of ZnO in Cu/ZnO/Al2O3 catalyst for hydrogenolysis of butyl butyrate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 14, 15 August 2011, Pages 1328–1332
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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