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Citation: MA Zhong, JIANG Qi-zhong, ZHANG Wu-gao, MA Zi-feng. CO2 reforming of dimethyl ether to produce hydrogen over La2O3/γ-Al2O3 catalyst[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(1): 74-80. shu

CO2 reforming of dimethyl ether to produce hydrogen over La2O3/γ-Al2O3 catalyst

  • 1.

    1. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

  • Corresponding author: JIANG Qi-zhong, 
  • Received Date: 13 June 2013
    Available Online: 22 September 2013

    Fund Project: 国家自然科学基金(21276254)。 (21276254)

  • In this paper, La2O3/γ-Al2O3 catalysts with different La loading were prepared by incipient wetness impregnation method.This paper investigated the influence of La loading and reaction temperature on catalytic performance for the carbon dioxide reforming of DME. The catalysts were characterized by X-ray diffraction (XRD), BET surface area, transmission electron microscopy (TEM), thermogravimetry and differential thermal analysis(TG-DTA). The results showed that the La2O3/γ-Al2O3 with 15% La loading gave the best catalytic performance at 550 ℃.The selectivity of H2 and CO were 93.3% and 76.04%, and the conversion of CO2 and DME were about 85.4% and 100%, respectively, while the selectivity of byproduct CH4 is only 6.3%. This 15% La2O3/γ-Al2O3catalysts had more symmetrical distribution of particle size,larger specific surface area and more proper pore structure, and it kept stable performance during 4 h test. As a result, the catalyst average coking rate was only about 1.387 5 mg/(g·h).
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