Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (6): 655-660.DOI: 10.11944/j.issn.1000-0518.2016.06.150327

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Preparation of USY Zeolite Supported Cobalt Boride Amorphous Alloy Catalysts and Its Application in Catalytic Hydrogen Production via Hydrolysis of Sodium Borohydride

ZHAO Shiduoa,LI Fanga,LI Qimingab*(),LIANG Zhihuaa   

  1. a Chemical Engineering and Environmental Engineering,School of Chemistry,Liaoning Shihua University,Fushun,Liaoning 113001,China
    b Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,Chinese Academy of Sciences,Fuzhou 350002,China
  • Received:2015-09-06 Accepted:2016-01-06 Published:2016-06-01 Online:2016-06-01
  • Contact: LI Qiming
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21201096), Liaoning Province Education Administration(No.L2010242, No.LZ2015050), Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Chinese Academy of Sciences

Abstract:

USY zeolite supported cobalt boride amorphous alloy catalysts(CoB/USY) were prepared via a combined impregnation and chemical reduction method. Their catalytic activities were investigated in hydrogen production from the hydrolysis of NaBH4. XRD characterization indicates that CoB active components supported by USY zeolite have excellent amorphous structure. Micro-morphology of CoB/USY supported catalysts and powdered CoB were checked using SEM. SEM images show that the amorphous CoB are well dispersed onto USY surface which brings relatively high dispersions of CoB species. In the hydrogen generation from NaBH4 hydrolysis, CoB/USY supported catalyst exhibits much higher catalytic activity compared with powdered CoB catalyst. The hydrogen generation rate of CoB/USY supported catalysts reaches about 1.5 L/(min·g), when the temperature is 30 ℃. The calculated apparent activation energy for NaBH4 hydrolysis is 65.9 kJ/mol based on CoB/USY supported catalysts which is obviously lower than that of powdered CoB catalyst(72.1 kJ/mol).

Key words: cobalt boride catalyst, molecular sieves, sodium borohydride, hydrogen generation