Glycine-nitrate combustion synthesis of CuO-ZnO-ZrO2 catalysts for methanol synthesis from CO2 hydrogenation
Glycine-nitrate combustion synthesis of CuO-ZnO-ZrO2 catalysts for methanol synthesis from CO2 hydrogenation
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DOI：
10.1016/j.jcat.2010.01.009
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发表时间：
2010-05-04
影响因子：
7.3
通讯作者：
Wu, Guisheng
中科院分区：
文献类型：
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作者：
Guo, Xiaoming;Mao, Dongsen;Wu, Guisheng
采用甘氨酸-硝酸盐燃烧法合成了CuO-ZnO-ZrO 2（CZZ）系列催化剂，并采用XRD、BET、N2 O化学吸附、SEM和TPR等技术对催化剂进行了表征。结果表明，催化剂的物理化学性质强烈影响的燃料在燃烧过程中使用的含量。CuO的分散体表现出逆火山变化趋势，甘氨酸量从化学计量的50%增加到150%。从燃烧温度的角度详细讨论了燃料的理化性质与燃料含量的关系。考察了该催化剂在CO2加氢合成甲醇反应中的催化性能。当甘氨酸用量为化学计量的50%时，CZZ催化剂表现出最佳的催化活性。计算了各种CZZ催化剂的翻转频率，发现催化活性不仅与金属铜的表面积有关，而且与ZrO_2的相态有关。(C)2010年爱思唯尔公司All rights reserved.
A series of CuO-ZnO-ZrO2 (CZZ) catalysts were synthesized by a glycine-nitrate combustion method and characterized by XRD, BET, N2O chemisorption, SEM and TPR techniques. The results show that the physicochemical properties of the catalysts are strongly influenced by the fuel content used in the combustion process. The dispersion of CuO exhibits an inverse-volcano variation trend with an increase in the glycine amount from 50% to 150% of the stoichiometry. The relationship between physiochemical properties and the fuel content is discussed in detail in terms of combustion temperature. The catalytic performance for the synthesis of methanol from CO2 hydrogenation was examined. The CZZ catalyst exhibits an optimum catalytic activity when 50% of stoichiometric amount of glycine was used. The turnover frequency has been calculated for various CZZ catalysts, and it reveals that the catalytic activities depend not only on the surface area of metallic copper but also on the phase state of ZrO2. (C) 2010 Elsevier Inc. All rights reserved.