新型Cu-Mn/TiO2和Cu-Mn/γ-Al2O3甲醛催化氧化催化剂的研制及活性

doi:10.16085/j.issn.1000-6613.2015.01.022

化工进展 ›› 2015, Vol. 34 ›› Issue (1): 127-132,172.DOI: 10.16085/j.issn.1000-6613.2015.01.022

新型Cu-Mn/TiO₂和Cu-Mn/γ-Al₂O₃甲醛催化氧化催化剂的研制及活性

李玮¹, 黄丽丽^2,3, 翟友存^2,3, 宁晓宇^2,3, 邹克华^2,3

1 天津工业大学环境与化学工程学院, 天津 300387;
2 天津市环境保护科学研究院国家环境保护恶臭污染控制重点实验室, 天津 300191;
3 天津迪兰奥特环保科技开发有限公司, 天津 300191

收稿日期:2014-06-23 修回日期:2014-08-12 出版日期:2015-01-05 发布日期:2015-01-05
通讯作者: 邹克华,教授级高级工程师。E-mail zoukehua@netease.com。
作者简介:邹克华,教授级高级工程师。E-mail zoukehua@netease.com。
基金资助:
天津市应用基础及前沿技术研究计划(12JCYBJC15000)及天津科技创新体系及平台建设计划(13TXGCCX06200)项目。

Catalytic oxidation of formaldehyde over Cu-Mn catalysts supported on TiO₂ and γ-Al₂O₃ dioxide

LI Wei¹, HUANG Lili^2,3, ZHAI Youcun^2,3, NING Xiaoyu^2,3, ZOU Kehua^2,3

1 School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
2 State Environmental Protection Key Laboratory of Odor Pollution Control, Tianjin Academy of Environmental Sciences, Tianjin 300191, China;
3 Tianjin Sinodour Environmental Protection Science and Technology Development Co., Ltd., Tianjin 300191, China

Received:2014-06-23 Revised:2014-08-12 Online:2015-01-05 Published:2015-01-05

摘要/Abstract

摘要： 采用浸渍法制备了Cu-Mn/γ-Al₂O₃、Cu-Mn/TiO₂新型催化剂,研究了在不同温度、不同气体流速下对甲醛的催化活性以及50h下催化剂的稳定性,并与Cu-Mn复合氧化物催化剂进行对比。结果表明:γ-Al₂O₃、TiO₂与Cu-Mn之间的协同作用提高了催化剂对甲醛的催化活性,且Cu-Mn/γ-Al₂O₃在150℃可以实现甲醛的完全去除,比Cu-Mn/TiO₂和Cu-Mn复合氧化物催化剂分别低80℃和140℃。3种催化剂的甲醛去除率随气速的增加而下降,且变化大小顺序为Cu-Mn/TiO₂>Cu-Mn/γ-Al₂O₃>Cu-Mn复合氧化物。50h后Cu-Mn/γ-Al₂O₃和Cu-Mn复合氧化物催化剂去除率仍为100%,Cu-Mn/TiO₂去除率在94%以上。采用XRD、BET和SEM-EDS等技术手段对制备的Cu-Mn/TiO₂、Cu-Mn/γ-Al₂O₃和Cu-Mn复合氧化物进行了表征。

关键词: 甲醛, 催化剂, 催化剂载体, 氧化, Cu-Mn复合氧化物, Cu-Mn/γ-Al₂O₃, Cu-Mn/TiO₂

Abstract: Two new types of γ-Al₂O₃ and TiO₂ supported Cu-Mn complex oxide catalysts were prepared by solution impregnation and compared with Cu-Mn complex oxide. The effect of temperature, gas flow rate and the stability in 50h were studied. The results showed that the catalytic activity of the Cu-Mn/γ-Al₂O₃, Cu-Mn/TiO₂ was promoted by the synergetic effect of Cu-Mn and TiO₂, γ-Al₂O₃. Cu-Mn/γ-Al₂O₃, in particular, could catalyze the complete oxidation of formaldehyde at a temperature as low as 150℃, which is 80℃ and 140℃ lower than that by Cu-Mn/TiO₂ and Cu-Mncomplex oxide respectively. The CH₂O removal rates of the three catalysts decrease with the increase of gas velocity. It was found that the order of changes was Cu-Mn/TiO₂>Cu-Mn/γ-Al₂O₃> Cu-Mn complex oxide. The CH₂O removal rate of Cu-Mn/γ-Al₂O₃ and Cu-Mn complex oxide still is 100% after 50h, while the CH₂O removal rate of Cu-Mn/TiO₂ was more than 94%. XRD, BET, SEM-EDS were used to describe the properties of the Cu-Mn catalyst.

Key words: formaldehyde, catalyst, catalyst support, oxidation, Cu-Mn complex oxide, Cu-Mn/γ-Al₂O₃, Cu-Mn/TiO₂

中图分类号:

TQ426.82

李玮, 黄丽丽, 翟友存, 宁晓宇, 邹克华. 新型Cu-Mn/TiO₂和Cu-Mn/γ-Al₂O₃甲醛催化氧化催化剂的研制及活性[J]. 化工进展, 2015, 34(1): 127-132,172.

LI Wei, HUANG Lili, ZHAI Youcun, NING Xiaoyu, ZOU Kehua. Catalytic oxidation of formaldehyde over Cu-Mn catalysts supported on TiO₂ and γ-Al₂O₃ dioxide[J]. Chemical Industry and Engineering Progree, 2015, 34(1): 127-132,172.

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新型Cu-Mn/TiO₂和Cu-Mn/γ-Al₂O₃甲醛催化氧化催化剂的研制及活性

Catalytic oxidation of formaldehyde over Cu-Mn catalysts supported on TiO₂ and γ-Al₂O₃ dioxide

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