CuxMn1-xCe0.75Zr0.25Oy催化降解甲苯的性能

杨德宇; 郝庆兰; 赵晨晨; 闫宁娜; 豆宝娟

doi:10.13205/j.hjgc.202101014

Cu_xMn_1-xCe_0.75Zr_0.25O_y催化降解甲苯的性能

doi: 10.13205/j.hjgc.202101014

天津科技大学化工与材料学院, 天津 300457

基金项目:

国家自然科学基金项目（51776216）。

详细信息

作者简介:
杨德宇(1992-),男,硕士,主要研究方向为多相催化。947651527@qq.com

通讯作者:
豆宝娟(1982-),女,博士,副教授,主要研究方向为VOCs污染控制。bjdou@tust.edu.cn

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- 文章访问数: 441
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-06
- 网络出版日期: 2021-04-23

CATALYTIC DEGRADATION PERFORMANCE OF TOLUENE OVER Cu_xMn_1-xCe_0.75Zr_0.25O_y

College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China

摘要

摘要: 采用溶胶凝胶法制备了双主金属、双助剂的Cu_xMn_1-xCe_0.75Zr_0.25O_y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℃。
- Ce-Zr /
- Cu /
- Mn /
- 溶胶凝胶法 /
- 催化降解 /
- 甲苯
Abstract: A series of bimetallic and biassistant Cu_xMn_1-xCe_0.75Zr_0.25O_y 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.
- Ce-Zr /
- Cu /
- Mn /
- sol-gel method /
- catalytic degradation /
- toluene

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参考文献(21)

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