| 助剂对Cu-Mn复合氧化物整体式催化剂催化低浓度甲烷燃烧反应性能的影响 |
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| 引用本文： | 张佳瑾,李建伟,朱吉钦,王越,陈标华. 助剂对Cu-Mn复合氧化物整体式催化剂催化低浓度甲烷燃烧反应性能的影响[J]. 催化学报, 2011, 32(8): 1380-1386 |
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| 作者姓名： | 张佳瑾 李建伟 朱吉钦 王越 陈标华 |
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| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室,北京,100029;北京化工大学化工资源有效利用国家重点实验室,北京,100029;北京化工大学化工资源有效利用国家重点实验室,北京,100029;北京化工大学化工资源有效利用国家重点实验室,北京,100029;北京化工大学化工资源有效利用国家重点实验室,北京,100029 |
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| 基金项目： | 国家高技术研究发展计划(863计划,2006AA030201)~~ |
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| 摘 要： | 以堇青石蜂窝陶瓷(COR)为载体,采用浸渍法制备了Cu-Mn-O/A12O3/COR,Cu-Mn-Ce-O/Al2O3/COR,Cu-Mn-Zr-O/Al2O3/COR,Cu-Mn-La-O/A12O3/COR和Cu-Mn-Ce-Zr-O/Al2O3/COR5种Cu-Mn复合氧化物整体式催化剂,用于低浓度甲烷催化燃烧反...
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| 关 键 词： | 铜锰复合氧化物 稀土金属氧化物 整体式催化剂 甲烷 催化燃烧 |
Effect of Promoter on the Performance of Cu-Mn Complex Oxide Monolithic Catalysts for Lean Methane Catalytic Combustion |
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| ZhANG Jiajin,LI Jianwei,ZHU Jiqin,WANG Yue,CHEN Biaohua. Effect of Promoter on the Performance of Cu-Mn Complex Oxide Monolithic Catalysts for Lean Methane Catalytic Combustion[J]. Chinese Journal of Catalysis, 2011, 32(8): 1380-1386 |
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| Authors: | ZhANG Jiajin LI Jianwei ZHU Jiqin WANG Yue CHEN Biaohua |
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| Affiliation: | State Key Laboratory of Chemical Resources Engineering,Beijing University of Chemical Technology,Beijing,100029,China |
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| Abstract: | Five Cu-Mn complex-oxide catalysts supported on cordierite(COR)monolithic,Cu-Mn-O/Al2O3/COR,Cu-Mn-Ce-O/Al2O3/COR,Cu-Mn-Zr-O/Al2O3/COR,Cu-Mn-La-O/Al2O3/COR,and Cu-Mn-Ce-Zr-O/Al2O3/COR,for the catalytic combustion of lean methane were prepared by wetness impregnation using cordierite as the support.The effect of promoters such as CeO2,ZrO2,La2O3,and CeO2-ZrO2,on the structure and properties of Cu-Mn-O/Al2O3 was characterized by X-ray photoelectron spectroscopy,H2 temperature-programmed reduction,and N2 adsorption-desorption.The catalytic performance of lean methane catalytic combustion over these catalysts was evaluated in a fixed-bed reactor.The results showed that with the introduction of CeO2,ZrO2,La2O3,and CeO2-ZrO2 as the promoter to Cu-Mn-O/Al2O3/COR,the specific surface area of the catalysts increases obviously,resulting in an enhancement of active component dispersion and oxygen species concentration on the catalyst surface.Therefore,the surface oxidation reactivity of the catalysts is improved.Besides,the pore structure of the catalysts is also adjusted well,which is beneficial for matching the diffusion-reaction coupling behavior on the catalyst.The activity of Cu-Mn-O/Al2O3/COR,especially the low-temperature activity remarkably increases with the promoter addition.Among the tested promoters,ZrO2 shows the best promoting effect.The methane conversion over Cu-Mn-Zr-O/Al2O3/COR monolithic catalyst is up to 90% under the conditions of 570 0C and GHSV = 20000 h-1. |
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| Keywords: | copper and manganese complex oxide rare earth metal oxide monolithic catalyst methane catalytic combustion |
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