化工进展2017，Vol.36Issue(8)：2941-2948,8.DOI:10.16085/j.issn.1000-6613.2016-2293
Mo/Mn-TiO2催化剂的脱硝活性及抗SO2性能
NH3-SCR catalytic activity and SO2 resistance over Mo/Mn-TiO2 catalyst
摘要
Abstract
Mo/Mn-TiO2 oxides catalysts have been prepared by impregnation method and employed to selective catalytic reduction of NO with ammonia (NH3-SCR) on a laboratory fixed-bed.Experimental results of NO removal showed that,in the temperature range of 160-440℃,the dopping of Mn alone can significantly improved the catalytic activity of denitrification,and the NO conversion efficiency was more than 90％ between 160-280℃,which shifted the active temperature window to the low temperature observably.With the further doping of Mo,there were different degrees of drop on the NO conversion rate in the temperature of 120-200℃,but the NO conversion rate can be further improved at 240-440℃;The de-NOx activity decreased with the increase of SO2 concentration on Mn-TiO2 catalyst,and the SO2 resistance dropped more sharply at lower reaction temperature.However,the resistance to SO2 poisoning was greatly improved after the addition of Mo,and the efficiency of de-NOx is still more than 90％ at 240℃ when the SO2 concentration was below 0.05％.BET,EDX,H2-TPR,XRD and XPS were used to characterize the pore structure,surface elements distribution,reaction activity and the morphology of the catalyst systematically,and the mechanism of de-NOx and SO2 resistance of Mo/Mn-TiO2 catalyst was clarified.关键词
固定床/选择性催化还原/催化剂/脱硝活性/抗SO2性能Key words
fixed-bed/selective catalytic reduction (SCR)/catalyst/denitrification activity/SO2 resistance分类
资源环境引用本文复制引用
陈亚南,段钰锋,朱纯,周强,胡鹏,李春峰,王双群..Mo/Mn-TiO2催化剂的脱硝活性及抗SO2性能[J].化工进展,2017,36(8):2941-2948,8.基金项目
国家自然科学基金(51376046,51576044)、江苏省普通高校研究生科研创新计划(CXZZ13_0093,KYLX_0115,KYLX_0184,KYLX15_0071)、东南大学优秀博士学位论文培育基金(YBJJ1505)及国家重点研究开发计划(2016YFB0600604)项目. （51376046,51576044）
