Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (10): 1662-1667.DOI: 10.1016/S1872-2067(15)60925-1

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Microstructure of rapidly quenched Ni-Al based catalysts by advanced electron microscopy

Bingsen Zhanga, Aiguo Zhengb, Xiaoli Pana, Yiming Niua, Xiaoxin Zhangb, Dangsheng Sua, Baoning Zongb   

  1. a Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;
    b State Key Laboratory of Catalytic Materials and Reaction Engineering, Research Institute of Petroleum Processing, Sinopec, Beijing 100083, China
  • Received:2015-04-03 Revised:2015-06-03 Online:2015-09-26 Published:2015-09-26
  • Supported by:

    This work was supported by the State Key Laboratory of Catalytic Materials and Reaction Engineering (RIPP, SINOPEC), the Key Innovative Project of Institute of Metal Research, Chinese Academy of Sciences (CAS), and the Youth Innovation Promotion Association CAS.

Abstract:

The microstructure of air-sensitive Raney-type catalysts directly determines their activity and selectivity for a catalytic reaction. The fine structure of a rapidly quenched Ni-Al alloy doped with Fe and Cr (RQ Ni-Al-FC) was investigated by electron microscopy imaging and spectroscopic techniques, and its structure was successfully characterized by using a vacuum transfer holder in the transmission electron microscope. The microstructural comparison of pristine and passivated/combusted samples was discussed in detail. This work provides the structure of RQ Ni-Al based catalysts as a contribution to exploring their synthesis-structure-performance relationship.

Key words: Nickel-aluminum based catalyst, Electron microscopy, Spectroscopy, Vacuum transfer holder, Microstructure