Effects of Coordination Ability of Nitrogen-Containing Carboxylic Acid Ligands on Nieuwland Catalyst
Effects of Coordination Ability of Nitrogen-Containing Carboxylic Acid Ligands on Nieuwland Catalyst
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含氮羧酸配体对Nieuwland催化剂配位能力的影响
DOI：
10.3390/catal8080337
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发表时间：
2018-08-01
期刊：
影响因子：
3.9
通讯作者：
Dai, Bin
中科院分区：
文献类型：
--
作者：
You, Yanhe;Luo, Juan;Dai, Bin
考察了三种含氮羧酸配体对Nieuwland催化体系的影响。含4.5%N-(2-乙酰氨基)亚氨基二乙酸的催化剂体系具有较好的催化活性和良好的催化性能。反应24 h后，单乙烯基乙炔(MVA)的产率保持在36.7%，比Nieuwland催化剂体系提高了17.1%。通过对催化剂溶液析出晶体的各种分析，可以推断出催化剂的优异性能和寿命与这些配体与铜离子形成较强的配位并稳定它们的能力有关。
This article investigated the effect of three nitrogen-containing carboxylic acid ligands for the Nieuwland catalyst system. The catalyst system containing 4.5% N-(2-acetamido) iminodiacetic acid exhibited improved catalytic activity with excellent performance. The yield of monovinylacetylene (MVA) was maintained at 36.7% after 24 h, which was increased by 17.1% relative to the Nieuwland catalyst system. Based on a variety of analyses on the crystals precipitated from the catalyst solutions, it can be inferred that the outstanding performance and lifetime of the catalysts were related to the abilities of these ligands to form strong coordination with Cu+ ions and stabilize them.