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论文类型：期刊论文

第一作者：Zhang Xiaopeng

通讯作者：He, GH (reprint author), Dalian Univ Technol, Sch Petr & Chem Engn, 2 Dagong Rd, Panjin 124221, Liaoning, Peoples R China.

合写作者：Cui Yuezong,Li Zhuofeng,Zhou Xuerong,He Gaohong

发表时间：2016-05-01

发表刊物：CHEMICAL ENGINEERING & TECHNOLOGY

收录刊物：SCIE、EI

卷号：39

期号：5,SI

页面范围：874-882

ISSN号：0930-7516

关键字：Cobalt modification; Potassium poisoning; Selective catalytic reduction

摘要：The three catalysts Mn/Ce-ZrO2, MnCo/Ce-ZrO2, and Mn/Co-Ce-ZrO2 were applied to remove NO in simulated flue gas. Their selective catalytic reduction (SCR) activity and potassium resistance were studied. Catalysts with Co as a modifier of the support exhibited the best SCR activity. The catalyst Mn/Co-Ce-ZrO2 had a larger surface area, higher dispersion of active components, larger amount of surface acid, and better redox characteristics than the other two catalysts, leading to a better SCR activity. X-ray photoelectron spectroscopy results proved the higher surface Mn4+ concentration of K0.3Mn/Co-Ce-ZrO2. Pyridine adsorption analysis suggested that there was still a large amount of Lewis acid in Mn/Co-Ce-ZrO2 even after potassium poisoning, demonstrating the higher resistance of this catalyst to potassium. Mn/Co-Ce-ZrO2 with potassium addition had a relatively stable SCR activity in the presence of H2O and SO2.