| 制备方法对Ru/CeO2催化剂结构和性能的影响 |
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| 引用本文： | 林建新,张留明,王 榕,倪 军,魏可镁.制备方法对Ru/CeO2催化剂结构和性能的影响[J].无机化学学报,2012,28(7):1377-1382. |
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| 作者姓名： | 林建新 张留明 王 榕 倪 军 魏可镁 |
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| 作者单位： | 福州大学化肥催化剂国家工程研究中心,福州,350002 |
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| 基金项目： | 中国石油科技创新基金研究项目，国家科技支撑计划 |
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| 摘 要： | 以K2RuO4和Ce(NO3)3为原料,利用物质的氧化还原特性制备了Ru/CeO2氨合成催化剂,并运用N2物理吸附、X射线衍射(XRD)、FE-SEM、CO吸附和H2程序升温还原(H2-TPR)等技术对其进行了表征,考察了还原剂和制备方法对所制备的Ru/CeO2氨合成催化剂结构和性能的影响。结果表明由自身氧化还原法制备的催化剂,其比表面积最大,达到了120 m2.g-1,钌分散度最高,为45.6%,且催化剂活性最高,在10 MPa,10000 h-1,425℃反应时,出口氨浓度达到了12.6%。
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| 关 键 词： | 氧化还原 钌 氨合成 二氧化铈 |
Effect of Preparation Method on Structure and Catalytic Activity of Ru/CeO2 Catalyst for Ammonia Synthesis |
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| LIN Jian-Xin,ZHANG Liu-Ming,WANG Rong,NI Jun and WEI Ke-Mei.Effect of Preparation Method on Structure and Catalytic Activity of Ru/CeO2 Catalyst for Ammonia Synthesis[J].Chinese Journal of Inorganic Chemistry,2012,28(7):1377-1382. |
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| Authors: | LIN Jian-Xin ZHANG Liu-Ming WANG Rong NI Jun and WEI Ke-Mei |
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| Institution: | National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China,National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China,National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China,National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China and National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | Ru/CeO2 catalysts were prepared using K2RuO4 and Ce(NO3)3 as the raw materials by redox methods.The obtained catalysts were characterized by N2 physisorption,X-ray diffraction(XRD),field-emission scanning electron microscopy(FE-SEM),CO chemisorption and temperature-programmed reduction(H2-TPR).The Ru/CeO2 catalyst prepared by self redox co-precipitation has the largest surface area of 120 m2·g-1and the highest dispersion of 45.6%.The Ru/CeO2 catalyst prepared by self redox co-precipitation shows the best activity,the ammonia concentration in the exit gas reaches 12.6% under the conditions of 10.0 MPa,425 ℃,and 10 000 h-1. |
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| Keywords: | redox ruthenium ammonia synthesis ceria |
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