环境工程学报2017，Vol.11Issue(7)：4112-4116,5.DOI:10.12030/j.cjee.201605185
Mn/USY分子筛催化剂低温SCR脱硝性能
Selective catalytic reduction of NO with NH3 over Mn/USY catalysts at low temperature
摘要
Abstract
A series of Mn/USY catalysts with different Mn loading amounts were prepared by the impregnation method.The catalysts were characterized using BET,XRD,SEM,and FT-IR.The conversion of NO was increased with temperature in the range 90-210 ℃,and the highest conversion was over 50％ at 210 ℃.In particular,10 Mn/USY achieved higher activity than did the other groups.BET and SEM experiments showed that the specific surface area was reduced with increase of Mn loading.SEM observation revealed that the catalyst particles were evenly distributed and loosely deposited.However,after the H2O and SO2 resistance tests,the specific surface area,pore size,and pore volumes of catalysts were decreased.XRD results further presented that the characteristic peaks of MnO2 were obvious at 10 Mn/USY,but there was no other diffraction peak.The FT-IR experiment shows that the USY structure was not damaged by loading Mn or MnOx.关键词
低温/选择性催化还原/分子筛/MnOxKey words
low temperature/selective catalytic reduction/zeolite/MnOx分类
资源环境引用本文复制引用
刘立忠,张彧,薛梁磊,程雅楠..Mn/USY分子筛催化剂低温SCR脱硝性能[J].环境工程学报,2017,11(7):4112-4116,5.基金项目
陕西省自然科学基础研究计划项目(2013JM7005) （2013JM7005）
陕西省教育厅专项科研项目(14JK1406) （14JK1406）
