Imidazolyl activated carbon refluxed with ethanediamine as reusable heterogeneous catalysts for Michael addition.
Imidazolyl activated carbon refluxed with ethanediamine as reusable heterogeneous catalysts for Michael addition.
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咪唑基活性炭与乙二胺回流作为可重复使用的迈克尔加成非均相催化剂
DOI：
10.1039/c8ra09457h
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发表时间：
2018-12-19
期刊：
影响因子：
3.9
通讯作者：
Yin, Dulin
中科院分区：
文献类型：
--
作者：
Liu, Wenzhu;Xiao, Jiafu;Xu, Qiong;Liu, Xianxiang;Zhong, Sheng;Huang, Hua;Zheng, Min;Kirk, Steven Robert;Yin, Dulin
用硝酸(AC-O)氧化咪唑基活性炭(AC-N)，然后用乙二胺在温和的条件下回流制备了咪唑基活性炭(AC-N)。结果表明，经Boehm滴定，AC-N的含氮量为10.3%，表面碱基密度为0.96mmolg−1，而AC-O的表面碱基密度为0.78mmolg−1。XPS和FT-IR表明，AC-N表面的碱性官能团包括咪唑和胺基。与2-甲基咪唑和氢氧化钾等常用碱性催化剂相比，AC-N的催化性能表现出更高的转化率和选择性。值得注意的是，AC-N具有很好的回收性，回用5次后转化率和选择性没有下降。
Imidazolyl activated carbon, denoted as AC-N, was prepared via oxidation of AC with HNO3 (AC-O) and then refluxed with ethanediamine under mild conditions. The results showed that the N content of AC-N was 10.3%, and the surface alkali group density of AC-N was 0.96 mmol g−1 from 0.78 mmol g−1 carboxy group of AC-O by Boehm titration. It was revealed that the basic functional groups on the AC-N surface included imidazole and amine groups, from XPS and FT-IR. Evaluated with Michael addition of furfural, the catalytic performance of AC-N showed higher conversion and selectivity than that of commonly used base catalyst such as 2-methylimidazole and KOH. Very remarkably, AC-N showed extraordinary recyclability, in that there was no decline of conversion and selectivity after being recycled 5 times.
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影响因子：
--
作者：
Fujita, Shin-ichiro;Watanabe, Hiroyuki;Arai, Masahiko
通讯作者：
Arai, Masahiko
影响因子：
3
作者：
Bosica, Giovanna;Polidano, Kurt
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Polidano, Kurt
影响因子：
10.9
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Chingombe, P;Saha, B;Wakeman, RJ
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Wakeman, RJ
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10.9
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VANBEKKUM, H
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10.9
作者：
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通讯作者：
Foster, KL