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Catalysts 2016, 6(8), 120; doi:10.3390/catal6080120

Effect of Cu+/Cu2+ Ratio on the Catalytic Behavior of Anhydrous Nieuwland Catalyst during Dimerization of Acetylene

Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, North 4th Road, Shihezi 832003, Xinjiang, China
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Authors to whom correspondence should be addressed.
Academic Editor: Kei Manabe
Received: 22 June 2016 / Revised: 22 July 2016 / Accepted: 29 July 2016 / Published: 4 August 2016
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Abstract

The relative contents of Cu+ and Cu2+ in solutions of anhydrous Nieuwland catalyst and CuCl2-added anhydrous Nieuwland catalyst were detected by X-ray photoelectron spectroscopy (XPS). Results indicated that Cu+ could be transformed into Cu2+ during the process of acetylene dimerization into monovinylacetylene, leading to deactivation of the catalyst. Moreover, the addition of Cu2+ inhibited the oxidation of Cu+ into Cu2+ and enhanced the performance and lifetime of the catalyst. The optimum molar ratio of Cu+ to Cu2+ was approximately 2:1; at this ratio, up to 40% acetylene conversion may be achieved. View Full-Text
Keywords: monovinylacetylene; acetylene dimerization; anhydrous Nieuwland catalyst; Cu+-Cu2+ cooperative catalysis monovinylacetylene; acetylene dimerization; anhydrous Nieuwland catalyst; Cu+-Cu2+ cooperative catalysis
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MDPI and ACS Style

Liu, H.; Xie, J.; Liu, P.; Dai, B. Effect of Cu+/Cu2+ Ratio on the Catalytic Behavior of Anhydrous Nieuwland Catalyst during Dimerization of Acetylene. Catalysts 2016, 6, 120.

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