| 沉淀剂对Cu-Mn-Ce复合氧化物催化剂结构和性能的影响 |
| |
| 引用本文： | 卢晗锋,黄金星,周瑛,朱秋莲,陈银飞.沉淀剂对Cu-Mn-Ce复合氧化物催化剂结构和性能的影响[J].化工学报,2015,66(6):2105-2111. |
| |
| 作者姓名： | 卢晗锋 黄金星 周瑛 朱秋莲 陈银飞 |
| |
| 作者单位： | 浙江工业大学化学工程学院, 催化反应工程研究所, 浙江 杭州 310014 |
| |
| 基金项目： | 国家自然科学基金项目(21107096)；浙江省自然科学基金项目(LY14E080008)；浙江省重大科技专项(2013C03021)。@@@@supported by the National Natural Science Foundation of China，the Natural Science Foundation of Zhejiang Province |
| |
| 摘 要： | 为了避免柠檬酸溶胶-凝胶法制备过程中环境问题, 采用共沉淀法制备了Cu-Mn-Ce复合氧化物催化剂, 以催化燃烧甲苯为模型反应, 考察了沉淀剂对Cu-Mn-Ce催化结构和性能的影响。结果表明, 以NaOH作为沉淀剂催化剂效果最佳, 其次为NH3·H2O、K2CO3、Na2C2O4。采用NaOH作为沉淀剂, 氢氧化物前体在焙烧活化过程中更易使Cu、Mn离子进入CeO2的立方结构, 形成具有缺陷结构的CeO2固溶体, 从而提高了表面氧浓度和活动性, 在燃烧反应中表现出更优异的催化特性。
|
| 关 键 词： | 催化燃烧 VOCs Cu-Mn-Ce复合氧化物 共沉淀 催化剂 氧化 有机化合物 |
| 收稿时间： | 2014-12-29 |
| 修稿时间： | 2015-03-03 |
Effect of precipitants on structure and performance of Cu-Mn-Ce mixed oxide catalysts |
| |
| LU Hanfeng,HUANG Jinxing,ZHOU Ying,ZHU Qiulian,CHEN Yinfei.Effect of precipitants on structure and performance of Cu-Mn-Ce mixed oxide catalysts[J].Journal of Chemical Industry and Engineering(China),2015,66(6):2105-2111. |
| |
| Authors: | LU Hanfeng HUANG Jinxing ZHOU Ying ZHU Qiulian CHEN Yinfei |
| |
| Affiliation: | Institute of Catalytic Reaction Engineering, School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China |
| |
| Abstract: | Cu-Mn-Ce(CMC) ternary mixed oxides were prepared by the co-precipitation method with different precipitants, and evaluated in catalytic combustion of toluene. The catalyst prepared with NaOH(CMC-NaOH)exhibited the highest catalytic activity, followed by the catalyst prepared with NH3?H2O, K2CO3, and Na2C2O4. The precursors of hydroxide derived from NaOH had strong interaction, and Cu, Mn ions more easily entered the lattice of CeO2 fluorite structure to form CeO2 solid solution during calcination. As a result, the structure containing Cu-Mn mixed oxides and CeO2 solid solution enhanced the mobility of active oxygen owing to abundant defective sites on the surface, which benefited catalytic combustion of toluene. |
| |
| Keywords: | catalytic combustion VOCs Cu-Mn-Ce oxide co-precipitation catalyst oxidation organic compounds |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
