Comprehensive insight into the support effect of graphitic carbon nitride for zinc halides on the catalytic transformation of CO2 into cyclic carbonates†,Catalysis Science & Technology

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Comprehensive insight into the support effect of graphitic carbon nitride for zinc halides on the catalytic transformation of CO2 into cyclic carbonates†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-09-25 00:00:00 , DOI: 10.1039/c8cy01688g
Jie Xu _{1,

2,

3,

4,

5} , Yu-Lin Gan _{1,

2,

3,

4,

5} , Peng Hu _{1,

2,

3,

4,

5} , Huan Zheng _{1,

2,

3,

4,

5} , Bing Xue _{1,

2,

3,

4,

5}

Affiliation

Chemical fixation of CO₂ to high-valued chemicals is currently a significant research topic in both the environment and chemistry, and cycloaddition of CO₂ with epoxides is regarded as a sustainable route for the manufacture of cyclic carbonates. Homogeneous catalysts including ionic liquids and organic metal complexes suffer from difficulty in catalyst–product separation despite their excellent catalytic activities. In this work, we utilized graphitic carbon nitride (g-C₃N₄) as a novel support to immobilize zinc halides (ZnX₂) through a simple preparation method. Based on the detailed design of the synthesis of ZnX₂/g-C₃N₄, the chemical bonding information of ZnX₂ on g-C₃N₄ was comprehensively investigated by XPS and FT-IR techniques. In addition to activation of CO₂, g-C₃N₄ can anchor zinc halides via interaction between zinc and nitrogen, thereby effectively alleviating potential leaching of zinc halides. As heterogeneous catalysts, ZnX₂/g-C₃N₄ materials showed good catalytic activities in the cycloaddition reactions of CO₂ with propylene oxide. Furthermore, a wide range of epoxides can be converted to the corresponding cyclic carbonate with good selectivities (>93%) and moderate conversions (50–88%).

中文翻译：

全面了解石墨碳氮化物对卤化锌的支持作用对CO ₂催化转化成环状碳酸酯的作用†

将CO ₂化学固定为高价值化学品目前是环境和化学领域中的重要研究课题，CO ₂与环氧化物的环加成被认为是生产环状碳酸酯的可持续途径。均相催化剂，包括离子液体和有机金属络合物，尽管具有出色的催化活性，但仍难以分离出催化剂。在这项工作中，我们利用石墨氮化碳（gC ₃ N ₄）作为一种新型载体，通过一种简单的制备方法来固定卤化锌（ZnX ₂）。在详细设计的基础上合成ZnX ₂ / gC ₃ N ₄通过XPS和FT-IR技术对ZnX ₂在gC ₃ N ₄上的化学键合信息进行了全面研究。除了活化CO _2之外，gC ₃ N ₄还可通过锌与氮之间的相互作用固定卤化锌，从而有效地减轻了卤化锌的潜在浸出。ZnX ₂ / gC ₃ N ₄作为多相催化剂在CO ₂的环加成反应中表现出良好的催化活性。与环氧丙烷。此外，多种环氧化物可以以良好的选择性（> 93％）和中等的转化率（50-88％）转化为相应的环状碳酸酯。

更新日期：2018-09-25

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