Ceramic monolith supported Mn-Ce-M ternary mixed-oxide (M=Cu, Ni or Co) catalyst forVOCs catalytic oxidation
Ceramic monolith supported Mn-Ce-M ternary mixed-oxide (M=Cu, Ni or Co) catalyst forVOCs catalytic oxidation
复制标题
陶瓷整体负载Mn-Ce-M三元混合氧化物（M=Cu、Ni或Co）VOCs催化氧化催化剂
DOI：
10.1016/j.ceramint.2016.07.076
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发表时间：
2016
影响因子：
5.2
通讯作者：
Wu Dongfang
中科院分区：
文献类型：
--
作者：
Zhang Xue;Wu Dongfang
The MOx(M=Cu, Ni or Co) modified manganese-cerium mixed-oxide catalysts supported on ceramic monolith were prepared by sol-gel method and examined for the catalytic combustion ofo-xylene. Results show that the addition of CuOxcould significantly enhance the catalytic properties of the monolithic catalysts, which may be correlated with the Mn-Cu synergistic interaction. The effects of the preparation parameters including the Cu content, the total amount of active phase and the calcination temperature and time, as well as the reaction conditions, i.e., the space velocity and concentration ofo-xylene, on the catalytic performance for the combustion ofo-xylene were also investigated. It is shown that the MnCeCu0.4/monolith catalyst with the active phase loading of 11.4 wt% and calcined at 500 °C for 3 h displays the highest catalytic activity. When the concentration ofo-xylene is 1000 ppm and the space velocity is 10,000 h−1, the temperature at which 90%o-xylene conversion is reached is 277 °C. It is also seen that the optimum catalyst has a good catalytic stability and exhibits an excellent activity not only at a rather high space velocity but also within a wide range ofo-xylene concentration. Furthermore, the optimum catalyst also show the high combustion performance for other hydrocarbons, e.g.,n-butanol and styrene.
