Citation: JIANG Li-Long, LIU Xian, CAO Yan-Ning, ZENG Jie-Kai, LIN Shi-Tuan, WEI Ke-Mei. Effect of Fe2O3 Content on Structure and Catalytic Performance of Cu-Fe/Bauxite for Water Gas Shift Reaction[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(11): 2297-2304. doi: 10.3969/j.issn.1001-4861.2013.00.338
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Using modified bauxite with large surface area and mesoporous structure as the support, a series of Cu-Fe/Bauxite catalysts were synthesized with co-precipitation method. The catalysts were characterized by means of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), SBET, H2-temperature-programmed reduction (H2-TPR) and CO temperature-programmed desorption (CO-TPD) and X-ray photoelectron spectroscopy (XPS). Their catalytic activity in water gas shift (WGS) reaction has also been studied. The results indicate that the WGS reaction activity increases markedly with increasing the content of supported Fe2O3 and when the content of Fe2O3 is to 20%, the catalyst exhibits the highest activity. Because there exists obvious interaction between supported Fe2O3 and CuO to form composite oxide like CuFe2O4 and it enhances with increase in Fe2O3 content. The interaction promotes the reduction of Fe2O3 and CuO and restrains the clotting of CuO, and then the catalytic activity increases.
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