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银纳米材料的合成及其催化CO_2转化研究
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摘要
作为一种非常重要的可再生资源和C1骨架来源,二氧化碳受到了化学工作者的广泛关注。由于其固有的热力学稳定性,开发促进二氧化碳化学转换的新型催化剂成为绿色化学研究的重要课题之一。在本工作中,我们报道一种常温常压下可以高效催化合成环状碳酸酯的由活性炭负载的新型卤化银催化剂。该催化反应体系的主要优点是,产物和催化剂可以快速简单地分离,且催化剂经简单处理后可以循环使用。
Development of new efficient catalytic systems for chemical transformation of CO_2 is a very attractive topic in green chemistry. In this work, we studied the synthesis of α-alkylidene cyclic carbonates through the coupling reaction between propargylic alcohols and CO_2 with new silver catalysts. It was found that activated carbon supported AgX(X=Br and I) was an simple and efficient catalyst for the carboxylative cyclization of propargyl alcohols with CO_2 at atmospheric pressure and room temperature. Nearly quantitative yield was obtained and the separation of product was very simple. Moreover, the catalyst could be easily recovered and reused at least ten times without a decrease in the catalytic activity and selectivity.
引文
[1]Zhang,H.;Liu,H.;Yue,J.Chem.Rev.2014,114,883.
    [2]Song,Q.;Yu,B.;He,L.Green Chem.2014,16,1633.

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