天津工业大学学报2024，Vol.43Issue(3)：23-31,9.DOI:10.3969/j.issn.1671-024x.2024.03.004
溶胶凝胶法铈锆锰基脱硝催化剂制备及性能
Preparation and performance of CeO2-ZrO2/MnOx-based deNOx catalysts by sol-gel method
摘要
Abstract
In order to improve the low-temperature denitrification performance of CeO2-ZrO2-based denitrification catalysts,a series of CeO2-ZrO2/MnOx-based deNOx catalysts were prepared by sol-gel and sol-gel+impregnation methods.The catalysts were characterized by XRD,XPS,N2 adsorption-desorption,NH3-TPD,H2-TPR,SEM/EDS,etc.The denitrification performance of the catalysts was evaluated.The results showed that the CZM-0.2 catalysts prepared by sol-gel method exhibited the best low-temperature deNOx performance in the temperature range of 100-350 ℃ with a gas hourly space velocity of 220 000 h-1.The excellent low-temperature deNOx performance of CZM-0.2 catalyst was mainly related to its better dispersion of Mn,higher Mn4+content,stronger low-temperature reduction performance(gradual reduction of MnOx),and more weak acid sites.关键词
NH3-SCR/铈锆锰基脱硝催化剂/溶胶凝胶/掺杂改性Key words
NH3-SCR/CeO2-ZrO2/MnOx-based deNOx catalysts/sol-gel/doping modification分类
化学化工引用本文复制引用
李渊,王旭超,谭小耀..溶胶凝胶法铈锆锰基脱硝催化剂制备及性能[J].天津工业大学学报,2024,43(3):23-31,9.基金项目
国家自然科学基金资助项目(91745116) （91745116）
