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Effect of pH in the preparation of ZnFe2O4 for oxidative dehydrogenation of n-butene to 1,3-butadiene: Correlation between catalytic performance and surface acidity of ZnFe2O4

Paper ID Volume ID Publish Year Pages File Format Full-Text
52116 46865 2008 6 PDF Available
Title
Effect of pH in the preparation of ZnFe2O4 for oxidative dehydrogenation of n-butene to 1,3-butadiene: Correlation between catalytic performance and surface acidity of ZnFe2O4
Abstract

A series of zinc ferrite (ZnFe2O4) catalysts were prepared by a co-precipitation method with a variation of pH value (pH 3–12), and applied to the oxidative dehydrogenation of n-butene to 1,3-butadiene. It was found that a zinc ferrite phase was formed at pH 6–12. Conversion of n-butene, selectivity for 1,3-butadiene, and yield for 1,3-butadiene were very high at low pH value (pH 6–10), but were drastically decreased with increasing pH value (pH 11–12). NH3-TPD experiments were conducted to correlate the acid property with the catalytic performance of zinc ferrite catalysts. It was revealed that the catalytic performance was closely related to the surface acidity of the catalysts. Conversion of n-butene was increased with increasing surface acidity of the catalysts. Among the catalysts tested, the zinc ferrite catalyst prepared at pH 9 with the largest surface acidity showed the best catalytic performance in the oxidative dehydrogenation of n-butene.

Keywords
Zinc ferrite; n-Butene; 1,3-Butadiene; Oxidative dehydrogenation; Effect of pH; Surface acidity
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Effect of pH in the preparation of ZnFe2O4 for oxidative dehydrogenation of n-butene to 1,3-butadiene: Correlation between catalytic performance and surface acidity of ZnFe2O4
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1137–1142
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us