Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (8): 1311-1319.DOI: 10.1016/S1872-2067(17)63005-5

• Special Column on the 15th International Conference on Carbon Dioxide Utilization (ICCDU XV) • Previous Articles     Next Articles

Cycloaddition of CO2 and propylene oxide by using M(HBTC)(4,4'-bipy)·3DMF (M=Ni, Co, Zn) metal-organic frameworks

Seol-Hee Kima, Robin Babua, Dong-Woo Kimb, Wonjoo Leeb, Dae-Won Parka   

  1. a Division of Chemical and Biomolecular Engineering, Pusan National University, Busan 609-735, Korea;
    b Korea Research Institute of Chemical Technology, Ulsan 681-802, Korea
  • Received:2017-11-25 Revised:2017-12-25 Online:2018-08-18 Published:2018-07-04
  • Contact: 10.1016/S1872-2067(17)63005-5
  • Supported by:

    This work was supported by Korea Electric Power Corporation and National Research Foundation of Korea (2016-R1D1A1B-03931325).

Abstract:

Three pillar-layered metal-organic frameworks (MOFs) based on M(HBTC)(4,4'-bipy)·3DMF (M=Ni, Co, and Zn; HBTC=1,3,5-benzenetricarboxylic acid, 4,4'-bipy=4,4'-bipyridine) were synthesized using a solvothermal method. Zn(HBTC)(4,4'-bipy)·3DMF was synthesized for the first time using both a solvothermal and microwave method, and subsequently characterized by various physicochemical methods. The structure of M(HBTC)(4,4'-bipy)·3DMF consisted of honeycomb grid layers of M2+ ions and BTC units, which were further linked by the 4,4'-bipy pillars to form a three-dimensional highly porous framework. All the MOFs displayed excellent synergistic catalytic properties with alkyl ammonium halides (TBAX) in the solventless fixation of CO2 with epoxides to produce cyclic carbonates. The catalytic activities of these MOFs followed the trend Zn > Co > Ni, which was explained by the acid-base bifunctional properties. The microwave-synthesized Zn(HBTC)(4,4'-bipy)·3DMF material exhibited physical, chemical, and catalytic properties that were similar to those of the catalyst obtained using a conventional solvothermal synthesis. The scope of various parameters, including recyclability, was studied, and a plausible reaction mechanism was suggested.

Key words: M(HBTC)(4,4'-bipy)·, 3DMF(M=Ni, Co, Zn), Microwave method, Carbon dioxide, Epoxide, Cyclic carbonate