化工进展2017，Vol.36Issue(3)：951-956,6.DOI:10.16085/j.issn.1000-6613.2017.03.024
WO3掺杂对V2O5/TiO2-SnO2催化剂NH3选择性催化还原NOx的影响
Influence of WO3 doping on properties of V2O5/TiO2-SnO2catalysts for selective catalytic reduction of NOx by NH3
摘要
Abstract
TiO2-SnO2 solid solution was prepared by aco-precipitation method and V2O5-(x%)WO3/ TiO2-SnO2catalysts were prepared by the impregnation method. The physicochemical properties were investigated by BET specific surface area,X-ray diffraction(XRD),in situ diffuse reflectance infrared Fourier transform spectroscopy(in situ DRIFTS),NH3 temperature-programmed desorption (NH3-TPD)and high-resolution transmission electron microscopy(HRTEM). Their catalytic performance for the selective catalytic reduction of NOx was also tested. The results indicate that the catalyst with 12% WO3 exhibits 95% NO conversion within the wide temperature range of 250~400℃. The characterization results show that the specific surface area decreases with the load of WO3 which is in a well-dispersed state. The strength of Br?nsted acid sites are intensified after adding WO3 which could account for the best catalytic performance of the catalyst V2O5-12%WO3/TiO2-SnO2.关键词
三氧化钨/五氧化二钒/TiO2-SnO2固溶体/载体/选择催化还原/催化剂Key words
WO3/V2O5/TiO2-SnO2 solid solution/support/selective catalytic reduction(SCR)/catalyst分类
化学化工引用本文复制引用
廖永进,张亚平,朱一闻,余岳溪,王龙飞..WO3掺杂对V2O5/TiO2-SnO2催化剂NH3选择性催化还原NOx的影响[J].化工进展,2017,36(3):951-956,6.基金项目
国家自然科学基金(51306034)、江苏省重点研发计划(BE2015677)及国家重点基础研究发展计划(2013CB228505)项目. （51306034）
