环境保护科学2024，Vol.50Issue(1)：81-86,6.DOI:10.16803/j.cnki.issn.1004-6216.202211041
Na对CuSO4/TiO2脱硝催化剂的活性影响研究
Effect of Na on the activity of CuSO4/TiO2 deNOx catalysts
摘要
Abstract
Na,which was a common element in the flue gas from stationary sources like coal-fired power plants,could cause the deactivation of commercial V-based deNOxcatalysts.The research about the effect of Na on CuSO4/TiO2 deNOxcatalysts was still absent,which hindered the further application of the catalyst.To investigate the effect of Na on the activity of CuSO4/TiO2 deNOxcatalysts,a series of CuSO4/TiO2 with different Na contents were prepared by wet-impregnation method.N2 adsorption-desorption,XRD,XPS,NH3-TPD,and in situ DRIFTS were used to characterize the sample.Na would poison the surface acid sites of the catalyst and lead to the decrease of adsorbed oxygen species and specific surface area,causing the deactivation of CuSO4/TiO2 catalysts.The highest NOxconversion decreased from 95.2%to 90.1%after 2.0%Na was loaded on the catalyst.In addition,due to the abundant acid sites especially Brønsted acid sites and adsorbed oxygen species,CuSO4/TiO2 catalyst exhibited a higher Na resistance than commercial catalysts.关键词
CuSO4/TiO2催化剂/Na/失活/NH3-SCR反应/吸附Key words
CuSO4/TiO2 catalyst/Na/deactivation/NH3-SCR reaction/adsorption分类
化学化工引用本文复制引用
葛钰申,于艳科,要海龙,闫祯,周建国..Na对CuSO4/TiO2脱硝催化剂的活性影响研究[J].环境保护科学,2024,50(1):81-86,6.基金项目
国家自然科学基金(21906127) （21906127）
中国博士后科学基金(2021M692550) （2021M692550）
