高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (10): 20250196.doi: 10.7503/cjcu20250196

• 物理化学 • 上一篇    下一篇

噻二唑基稀土金属有机骨架高效催化CO2环加成反应

郭井鹏1, 张航川1, 魏娜1(), 王舒1, 姜宏波1, 赵震1,2()   

  1. 1.沈阳师范大学化学化工学院, 沈阳 110034
    2.中国石油大学(北京)重质油国家重点实验室, 北京 102249
  • 收稿日期:2025-07-14 出版日期:2025-10-10 发布日期:2025-08-20
  • 通讯作者: 魏娜,赵震 E-mail:wwweina@126.com;zhenzhao@cup.edu.cn
  • 基金资助:
    国家自然科学基金(22002095);辽宁省高校基本科研项目(LJ212510166006)

Thiadiazole-based Rare Earth Metal-organic Frameworks for Efficient Catalysis of CO2 Cycloaddition Reactions

GUO Jingpeng1, ZHANG Hangchuan1, WEI Na1(), WANG Shu1, JIANG Hongbo1, ZHAO Zhen1,2()   

  1. 1.School of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China
    2.State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China
  • Received:2025-07-14 Online:2025-10-10 Published:2025-08-20
  • Contact: WEI Na, ZHAO Zhen E-mail:wwweina@126.com;zhenzhao@cup.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22002095);the Liaoning Provincial Education Department Basic Research Projects for Universities, China(LJ212510166006)

摘要:

利用含有噻二唑基团的四羧酸配体5,5′-(苯并噻二唑-4,7-二取代)-间苯二甲酸(H4BTDI)与稀土金属硝酸盐, 通过溶剂热法合成了一系列异质同晶的新型三维稀土金属有机骨架(MOFs)材料[RE4(BTDI)3(DMF)4]·solv(RE-BTDI, RE=Er, Dy, Y). 通过Py-IR和NH3-TPD测试证实了RE-BTDI结构的稀土金属节点可作为Lewis酸性位点, 同时通过配体引入的噻二唑基团作为极性位点可提升材料的CO2吸附性能, 在二者的协同下, RE-BTDI对CO2和系列环氧化物的环加成反应展示出良好的催化活性. 在80 oC, 1MPa CO2条件下, 用0.1%(摩尔分数)的Er-BTDI催化CO2与氧化苯乙烯的环加成反应, 反应5 h后苯乙烯环状碳酸酯的产率均可达到90%, 并且在循环催化5轮后, 催化活性和催化剂结构均无明显改变. 此外, 对于其它环氧化物, 在较温和的催化条件下使用RE-BTDI, 相应环状碳酸酯产物的产率可达到92.5%~99.0%.

关键词: 金属有机骨架, 稀土, 噻二唑, 非均相催化, 二氧化碳环加成

Abstract:

A series of novel isostructural three-dimensional rare earth metal-organic frameworks(MOFs), [RE4(BTDI)3(DMF)4]·solv(RE-BTDI, RE=Er, Dy, Y), was synthesized by solvothermal method using tetracarboxylic acid ligand containing thiadiazole groups, 5,5′-(benzothiadiazole-4,7-diyl)diisophthalic acid(H4BTDI), and rare earth metal nitrates. The rare earth metal nodes on the frameworks of RE-BTDI are Lewis acidic sites which was confirmed qualitatively and quantitatively by Py-IR and NH3-TPD. Meanwhile, the thiadiazole groups introduced by ligands can be used as polar sites to enhance the CO2 adsorption performance of these materials. Under the synergy of the Lewis acidic sites and thiadiazole groups, RE-BTDI showed good catalytic activity for the cycloaddition reaction of CO2 and a series of epoxides. Under the conditions of 80 ℃, 1 MPa CO2, 0.1%(molar fraction) RE-BTDI catalyzed the cycloaddition reaction of CO2 and styrene oxide for 5 h, the yield of styrene cyclic carbonate can reach 90%, and after 5 rounds of cyclic catalysis, the catalytic activity and catalyst structure maintained well. In addition, for other epoxides, the yields of the corresponding cyclic carbonate products can reach 92.5% to 99.0% catalyzed by RE-BTDI under relatively mild conditions.

Key words: Metal organic framework, Rare earth, Thiadiazole, Heterogeneous catalysis, CO2 cycloaddition

中图分类号: 

TrendMD: