Enhanced Propene/Propane Separation by Directional Decoration of the 12-Membered Rings of Mordenite with ZIF Fragments

Yaqi Wu; Shu Zeng; Danhua Yuan; Jiacheng Xing; Hanbang Liu; Shutao Xu; Yingxu Wei; Yunpeng Xu; Zhongmin Liu

doi:10.1002/anie.202000029

Enhanced Propene/Propane Separation by Directional Decoration of the 12-Membered Rings of Mordenite with ZIF Fragments

Angew Chem Int Ed Engl. 2020 Apr 20;59(17):6765-6768. doi: 10.1002/anie.202000029. Epub 2020 Mar 5.

Authors

Yaqi Wu^{1

2}, Shu Zeng^{1

2}, Danhua Yuan¹, Jiacheng Xing^{1

2}, Hanbang Liu^{1

2}, Shutao Xu¹, Yingxu Wei¹, Yunpeng Xu¹, Zhongmin Liu¹

Affiliations

¹ National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.
² University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 32053274
DOI: 10.1002/anie.202000029

Abstract

Propene/propane separation is challenging due to the very small difference in molecular sizes, boiling points and condensabilities between these molecules. Herein, we report a strategy of introducing ZIF fragments into traditional mordenite (MOR) zeolite to decorate the 12-membered ring of MOR. After decoration, the originally ineffective zeolite MOR exhibited high kinetic propene/propane selectivities (139 at 25 °C) and achieved efficient propene/propane separation. The propene/propane separation potentials of the resulting adsorbents were further confirmed by breakthrough experiments with equimolar propene/propane (50/50) mixtures.

Keywords: ZIF fragments; gas adsorption; mordenite; propene/propane separation.

Grants and funding

2016YFB0301603/the National Key Research and Development Program of China