Journal
CATALYSTS
Volume 7, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/catal7120394
Keywords
acetylene dimerization; selectivity; performance; monovinylacetylene; iminodiacetic acid-modified Nieuwland catalyst
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Funding
- National Natural Science Foundation of China [21463021, 21776179]
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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.
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