催化作用
离子液体
基质(水族馆)
复合数
X射线光电子能谱
化学
化学工程
离子交换
离子键合
炔烃
材料科学
无机化学
有机化学
离子
复合材料
工程类
地质学
海洋学
作者
Bingbing Lai,Rongxian Bai,Yanlong Gu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2018-10-25
卷期号:6 (12): 17076-17086
被引量:26
标识
DOI:10.1021/acssuschemeng.8b04451
摘要
In Glaser heterocoupling reactions, one of the alkyne precursors have to be used in five to ten times of excess. This not only wasted the organic substrate, but also decreased the catalytic efficiency of the metal catalysts. To solve this problem, we prepared a lignosulfonate/dicationic ionic liquid composite via ion exchange process. The thereby obtained materials can be used as catalyst supports for preparing heterogeneous Cu-based catalysts. The supports and the catalysts were characterized by many physicochemical methods including FT-IR, elemental analysis (EA), FSEM, FTEM, XPS, and TG. Interestingly, the catalyst can enrich the alkynol component in the reaction system, thus enabling Glaser heterocoupling reactions of alkynols and phenylacetylenes to proceed well with a low substrate ratio. The substrate scope of the Glaser heterocoupling reaction, enriching effect of the composite support for the alkynol component, and recyclability of the catalyst were also investigated.
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