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Catalysts 2016, 6(12), 199; doi:10.3390/catal6120199

Selective Hydrogenation of Concentrated Vinyl Acetylene Mixed C4 by Modified Pd Catalysts: Effect of Cu

1
The Petroleum and Petrochemical College, Chulalongkorn University, Soi Chula 12, Phyathai Road, Pathumwan, Bangkok 10330, Thailand
2
Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
*
Author to whom correspondence should be addressed.
Academic Editor: Leonarda F. Liotta
Received: 19 September 2016 / Revised: 2 December 2016 / Accepted: 5 December 2016 / Published: 9 December 2016
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Abstract

The Pd and Pd-Cu on alumina catalysts were tested for hydrogenation of vinyl acetylene in mixed C4 in a circulating tubular reactor. The results showed that adding proper amounts of Cu improved the reaction activity, but inhibited 1,3-butadiene selectivity. Moreover, the presence of Cu retarded the carbon deposition on catalysts during the reaction. Temperature programmed oxidation (TPO), Temperature programmed reduction (TPR), H2 chemisorption, and X-ray photoelectron spectroscopy (XPS) were utilized to characterize the catalysts. The characterization suggested both geometric and electronic modifications. View Full-Text
Keywords: Pd-Cu; bimetallic; vinyl acetylene; selective hydrogenation; Pd/Al2O3 catalyst Pd-Cu; bimetallic; vinyl acetylene; selective hydrogenation; Pd/Al2O3 catalyst
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Insorn, P.; Kitiyanan, B. Selective Hydrogenation of Concentrated Vinyl Acetylene Mixed C4 by Modified Pd Catalysts: Effect of Cu. Catalysts 2016, 6, 199.

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