文献详情
Promotional Effect of Preparation Methods on Catalytic Reduction of NO by CO over CoCeOx, Catalysts
文献类型：期刊
通讯作者：Chang, HZ (reprint author), Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China.
期刊名称：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH影响因子和分区
年：2020
卷：59
期：1
页码：34-41
ISSN：0888-5885
所属部门：环境学院
摘要：In this study, a series of CoCeOx catalysts were prepared by template, solid-state grinding with cobalt sulfate or cobalt acetate as the precursor and the oil bath method for catalytic reduction of NOx by CO (CO-NO). These catalysts were characterized by X-ray diffraction, Brunauer-Emmett-Teller, Raman spectroscopy, X-ray photoelectron spectroscopy, temperature-programmed reduction of H-2, and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The results indicated tha ...More
In this study, a series of CoCeOx catalysts were prepared by template, solid-state grinding with cobalt sulfate or cobalt acetate as the precursor and the oil bath method for catalytic reduction of NOx by CO (CO-NO). These catalysts were characterized by X-ray diffraction, Brunauer-Emmett-Teller, Raman spectroscopy, X-ray photoelectron spectroscopy, temperature-programmed reduction of H-2, and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The results indicated that CoCeOx,-TA and CoCeOx-SS catalysts exhibited much higher activity, which were attributed to excellent reducibility property, abundant chemical adsorbed oxygen, and NO absorption sites. In the presence of O-2, the activity decreased obviously over CoCeOx-TA, CoCeOx-SS, and CoCeOx-SA catalysts. However, the activity increased at high temperatures over the CoCeOx-OA catalyst. According to the result of in situ DRIFTS, nitrate species decreased over CoCeOx-TA, CoCal(x)-SS, and CoCeOx-SA catalysts in the presence of O-2, which might inhibit the reduction efficiency of NO. Moreover, NO adsorption was not affected by O-2 over CoCeOx-OA catalyst, which could contribute to its high activity in the CO-selective catalytic reduction reaction. ...Hide

DOI：10.1021/acs.iecr.9b04232
百度学术：Promotional Effect of Preparation Methods on Catalytic Reduction of NO by CO over CoCeOx, Catalysts
语言：外文
人气指数：2
浏览次数：2
基金：National Key R&D Program of China [2016YFCO203900, 2016YFCO203901]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21577173, 51778619]
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