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《Chinese Journal of Catalysis》 2007-01
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Preparation of γ-Fe_2O_3 Support and Evaluation of CatalyticActivty of Ru-K/Fe_2O_3 Catalyst for Ammonia Synthesis

NI Jun~1, WANG Rong~1, ZHENG Ying~2, LIN Jianxin~1, WEI Kemei~ 1 (1 National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China; 2 College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China)  
A novel nanometer iron oxide support was successfully synthesized by the sol-gel method. The results of X-ray diffraction, differential thermal analysis, thermogravimetric analysis, scanning electron microscopy, and N_2 physical adsorption show that the prepared Fe_2O_3 particles have a typical mesoporous structure with pore diameters of 18.8-25.0 nm. The effect of the crystal phase composition of Fe_2O_3 on catalytic activity of the Ru-K/γ-Fe_2O_3 catalyst was further investigated under the conditions of 475 ℃, 10 MPa, 10?000 h~ -1 , and V(H_2) / V(N_2) =3. The higher the content of γ-Fe_2O_3 in the support, the better the catalytic activity of the catalyst.
【Fund】: 国家自然科学基金(20576021)
【CateGory Index】: TQ113.2
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