An unexpected reversal:The smart performance of hydrogen chloride on SbCe catalysts for NH3-SCR reaction

作     者：Caixia Liu Chaojun Huang Baiyu Fan Yan Zhang Lijing Fang Yuhe Wang Qingling Liu Weichao Wang Yanguo Chen Yawei Zhang Jiancheng Liu Fang Dong Ziyin Zhang 刘彩霞;黄朝俊;范柏余;张岩;房莉静;王雨禾;刘庆岭;王卫超;陈延国;张亚伟;刘建成;董‧芳;张子印

作者机构：Tianjin Key Laboratory of Indoor Air Environmental Quality ControlSchool of Environmental Science and Technology and State Key Laboratory of EnginesTianjin UniversityTianjin 300350China China Merchants Marine and Offshore Research Institute CO.LTD.Shenzhen 518000GuangdongChina China Automotive Strategy and Policy Research CenterChina Automotive Technology and Research Center Co.LtdTianjin 300300China Tianjin Key Laboratory of Environmental Remediation&Pollution ControlMOE Key Laboratory of Pollution Processes and Environmental CriteriaCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Tianjin TEDA Co.Ltd.Tianjin 300350China School of Civil EngineeringTianjin UniversityTianjin 300072China New Catalytic Materials Engineering Research Center for Air Pollutant ControlHebei province New Resin Material Technology Innovation CenterLangfang City Beichen Entrepreneurship Resin Materials Incorporated Co.Ltd.Langfang 065000HebeiChina 

基　　金：国家重点研发计划项目(2022YFB3504100,2022YFB3504102) 河北省重大科技成果转化基金支持项目(2021004012A,22281401Z) 国家自然科学基金(22276133,22076136) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报(英文))

年 卷 期：2025年第68卷第1期

页      码：376-385页

摘      要：Understanding the influence of HCl on the NH_(3)-selective catalytic reduction reaction mechanism is crucial for designing highly efficient denitrification *** formation of chlorate species on the surface of the synthesized SbCeO_(x)catalyst,induced by HCl,significantly enhances low-temperature activity,as evidenced by a 30%increase in NO conversion at 155℃.Furthermore,it improves N_(2)selectivity at high temperatures,with a notable 17%increase observed at 405℃.Both experimental results and density functional theory calculations confirm that chlorate species form at Ce *** formation facilitates the creation of oxygen vacancies,boosting the oxygen exchange *** also increases NH_(3)adsorption at the Ce sites,promotes the formation of Sb-OH,and reduces competitive OH adsorption on these ***,compared with the reaction mechanism without HCl,the presence of chlorate species enhances NH_(3)adsorption and activation,which is vital for subsequent catalytic reactions.

主 题 词：NH_(3)-selective catalytic reduction Chlorate species SbCeO_(x)catalyst Density functional theory HCI 

学科分类：081704[081704] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(24)60155-5

馆 藏 号：203156613...