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Catalysts 2017, 7(12), 394; doi:10.3390/catal7120394

Effect of Iminodiacetic Acid-Modified Nieuwland Catalyst on the Acetylene Dimerization Reaction

Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, North 4th road, Shihezi 832003, China
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Received: 19 November 2017 / Revised: 16 December 2017 / Accepted: 16 December 2017 / Published: 19 December 2017
(This article belongs to the Special Issue Homogeneous Catalysis and Mechanisms in Water and Biphasic Media)
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Abstract

The iminodiacetic acid-modified Nieuwland catalyst not only improves the conversion of acetylene but also increases the selectivity of monovinylacetylene (MVA). A catalyst system containing 4.5% iminodiacetic acid exhibited excellent performance, and the yield of MVA was maintained at 32% after 24 h, producing an increase in the yield by 12% relative to the Nieuwland catalyst system. Based on a variety of characterization methods analysis of the crystal precipitated from the catalyst solution, it can be inferred that the outstanding performance and lifetime of the catalyst system was due to the presence of iminodiacetic acid, which increases the electron density of Cu+ and adjusts the acidity of the catalytic solution. View Full-Text
Keywords: acetylene dimerization; selectivity; performance; monovinylacetylene; iminodiacetic acid-modified Nieuwland catalyst acetylene dimerization; selectivity; performance; monovinylacetylene; iminodiacetic acid-modified Nieuwland catalyst
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You, Y.; Luo, J.; Xie, J.; Dai, B. Effect of Iminodiacetic Acid-Modified Nieuwland Catalyst on the Acetylene Dimerization Reaction. Catalysts 2017, 7, 394.

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