东南大学学报（自然科学版）2017，Vol.47Issue(3)：513-520,8.DOI:10.3969/j.issn.1001-0505.2017.03.017
改性SAPO-34分子筛催化剂的SCR脱硝性能
NH3-SCR performance of modified SAPO-34 molecular sieve
摘要
Abstract
The new impregnated catalyst with low temperature,low cost and high efficiency was prepared for NH3-SCR denitration by choosing SAPO-34 molecular sieve as support and impregnating Cu,Mn and Cu-Mn.Three factors were studied,such as different active ingredients,impregnated quantity,calcination temperature,and characterized means using nitrogen adsorption-desorption (BET),X-ray diffraction (XRD),NH3 temperature programmed desorption (NH3-TPD),transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS).The activity test results show that Cu-Mn bimetallic co-load is better than that of Cu or Mn single metal supported catalyst.When the loading amounts of Cu and Mn are 2％ and 6％ respectively,the calcination temperature is 450 ℃,the activity of the catalyst is the best,and it can reach 90％ or more between 180 to 330 ℃.The analysis results show that compared with loading Cu or Mn,the Cu-Mn can weaken the effects on the active component and the molecular sieve,promote active component dispersed more evenly on the surface of the catalyst.The introduction of Cu can increase the ratio of valent Mn and improve the activity of the catalyst,the introduction of Mn can properly adjust the rate of Cu2 +/Cu +and broaden the activity temperature window of the catalyst.关键词
SCR/负载型催化剂/SAPO-34分子筛/氮氧化物Key words
selective catalytic reduction/impregnated catalyst/SAPO-34 molecular sieve/nitrogen oxides分类
资源环境引用本文复制引用
何鹏飞,沈德魁,刘国富..改性SAPO-34分子筛催化剂的SCR脱硝性能[J].东南大学学报（自然科学版）,2017,47(3):513-520,8.基金项目
江苏省科技厅社会发展类资助项目(BE2015677). （BE2015677）
