| CuxMn1-xCe0.75Zr0.25Oy催化降解甲苯的性能 |
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| 引用本文： | 杨德宇,郝庆兰,赵晨晨,闫宁娜,豆宝娟.CuxMn1-xCe0.75Zr0.25Oy催化降解甲苯的性能[J].环境工程,2021,39(1):96-100. |
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| 作者姓名： | 杨德宇 郝庆兰 赵晨晨 闫宁娜 豆宝娟 |
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| 作者单位： | 天津科技大学 化工与材料学院, 天津 300457 |
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| 基金项目： | 国家自然科学基金项目（51776216）。 |
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| 摘 要： | 采用溶胶凝胶法制备了双主金属、双助剂的CuxMn1-xCe0.75Zr0.25Oy催化剂，在固定床反应器中评价了催化剂降解甲苯的性能，并采用XRD、H2-TPR、O2-TPD和Raman对催化剂进行表征。试验结果表明:催化剂中Cu含量的增加有助于增强Cu-Ce金属之间的相互作用，增加催化剂中的氧空位浓度和晶格氧含量，提高催化剂低温还原性，从而促进催化活性的提高。Cu1CeZr催化剂降解甲苯活性最好，其完全降解甲苯的温度（T100）为220℃，比Mn1CeZr催化剂低60℃。
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| 关 键 词： | Ce-Zr Cu Mn 溶胶凝胶法 催化降解 甲苯 |
| 收稿时间： | 2020-03-06 |
CATALYTIC DEGRADATION PERFORMANCE OF TOLUENE OVER Cu_xMn_(1-x)Ce_(0.75)Zr_(0.25)O_y |
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| Affiliation: | College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China |
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| Abstract: | A series of bimetallic and biassistant CuxMn1-xCe0.75Zr0.25Oy catalysts were prepared by sol-gel method. The catalytic degradation performance of toluene over the catalysts was tested in a fixed-bed reactor. The relationships between the catalytic activity of toluene degradation and catalyst structure were explored by XRD, H2-TPR, O2-TPD and Raman methods. It was found that the increase of copper content could enhance the interaction between Cu-Ce, and improve the oxygen vacancy concentration, lattice oxygen content and low temperature reducibility, thus promote the catalytic activity. Cu1CeZr catalyst exhibited the best activity for toluene degradation, and the temperature of complete degradation of toluene was 220℃, which was 60℃ lower than that of Mn1CeZr catalyst. |
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