Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (1): 146-156.DOI: 10.1016/S1872-2067(17)62958-9

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Formation mechanism of highly dispersed semi-embedded ruthenium nanoparticles in porous carbon matrix determined by in situ temperature-programmed infrared spectroscopy

Guojun Lan, Yaping Zhou, Hangjia Shen, Haodong Tang, Ying Li   

  1. Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China
  • Received:2017-09-07 Revised:2017-11-01 Online:2018-01-18 Published:2018-01-19
  • Contact: 10.1016/S1872-2067(17)62958-9
  • Supported by:

    This work was supported by the Natural Science Foundation of Zhejiang Province (LY17B030010).

Abstract:

The carbonization process of a sucrose-RuCl3/SBA-15 composite towards a Ru-containing ordered mesoporous carbon (Ru-OMC) catalyst was studied by in situ temperature-programmed infrared spectroscopy to identify the stabilization role of organic carbon precursors during the formation of highly dispersed Ru nanoparticles. The results show that the formation of metal carbonyl species results in the formation of homogeneously distributed Ru nanoparticles, and the rigid silica support and carbon matrix around the Ru(CO)x complex can significantly avoid the sintering and agglomeration of Ru metal particles during elevated temperature thermal treatment. These results ultimately demonstrate that sucrose plays important roles in the formation of homogeneously distributed Ru nanoparticles in a porous carbon matrix.

Key words: Ruthenium nanoparticles, Infrared spectroscope, in-situ, Ru-containing ordered mesoporous carbon, Mesoporous carbon