Cu-VWT Catalysts for Synergistic Elimination of NOx and Volatile Organic Compounds from Coal-Fired Flue Gas,Environmental Science & Technology

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Cu-VWT Catalysts for Synergistic Elimination of NOx and Volatile Organic Compounds from Coal-Fired Flue Gas
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2022-06-29 , DOI: 10.1021/acs.est.2c02083
Gaofei Xiao ₁ , Ziyang Guo ₁ , Beilong Lin ₁ , Mingli Fu _{1,

2,

3} , Daiqi Ye _{1,

2,

3} , Yun Hu _{1,

2,

3}

Affiliation

A dual-function catalyst, designated as Cu5-VWT, has been constructed for the synergistic removal of NO_x and volatile organic compounds under complex coal-fired flue gas conditions. The removal of toluene, propylene, dichloromethane, and naphthalene all exceeded 99% (350 °C), and the catalyst could effectively block the generation of polycyclic aromatic hydrocarbons. Mechanistic studies have shown that Cu sites on the Cu5-VWT catalyst facilitate catalytic oxidation, while V sites facilitate NO_x reduction. Thus, toluene oxidation and NO_x reduction can proceed simultaneously. The removal of total hydrocarbons and nonmethane total hydrocarbons from 1200 m³·h^–1 real coal-fired flue gas by a monolithic catalyst were determined as 92 and 96%, respectively, much higher than those of 54 and 72% over a commercial VWT catalyst, indicating great promise for industrial application.

中文翻译：

用于协同消除燃煤烟气中 NOx 和挥发性有机化合物的 Cu-VWT 催化剂

已经构建了一种双功能催化剂，称为 Cu5-VWT，用于在复杂的燃煤烟气条件下协同去除 NO _{x和挥发性有机化合物。}甲苯、丙烯、二氯甲烷、萘的去除率均超过99%（350℃），催化剂能有效阻断多环芳烃的生成。机理研究表明，Cu5-VWT 催化剂上的 Cu 位点促进催化氧化，而 V 位点促进 NO _x还原。因此，甲苯氧化和NO _x还原可以同时进行。^{1200 m 3} ·h ^–1总烃和非甲烷总烃的去除整体式催化剂实际燃煤烟气的测定分别为 92% 和 96%，远高于商用 VWT 催化剂的 54% 和 72%，表明其在工业应用方面具有很大的前景。

更新日期：2022-06-29

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