Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (2): 389-395.DOI: 10.1016/S1872-2067(17)62786-4

• Article • Previous Articles     Next Articles

Selective oxidative dehydrogenation of ethane to ethylene over a hydroxylated boron nitride catalyst

Lei Shia, Bing Yana, Dan Shaoa, Fan Jianga, Dongqi Wangb, An-Hui Lua   

  1. a State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
    b Center for Multi-disciplinary Research, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-09 Revised:2017-01-18 Online:2017-02-18 Published:2017-03-14
  • Contact: 10.1016/S1872-2067(17)62786-4
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21225312, U1462120, 21473206) and Cheung Kong Scholars Programme of China (T2015036).

Abstract:

Boron nitride containing hydroxyl groups efficiently catalysed oxidative dehydrogenation of ethane to ethylene, offering rather high selectivity (95%) but only small amount of CO2 formation (0.4%) at a given ethane conversion of 11%. Even at high conversion level of 63%, the selectivity of ethylene retained at 80%, which is competitive with the energy-demanding industrialized steam cracking route. A long-term test for 200 h resulted in stable conversion and product selectivity, showing the excellent catalytic stability. Both experimental and computational studies have identified that the hydrogen abstraction of B-OH groups by molecular oxygen dynamically generated the active sites and triggered ethane dehydrogenation.

Key words: Boron nitride, Hydroxylation, Ethane, Oxidative dehydrogenation, Ethylene