银在光催化分解NO反应中的光催化行为研究  

Behavior of Different Silver Species in the Photocatalytic Decomposition of NO over Ag/H-ZSM-5 Catalyst

作　　者：魏翠[1] 丁天英[2] 陈冰冰[1] 郑楠[1] 石川[1,3] 

机构地区：[1]大连理工大学等离子体物理化学研究室,辽宁大连116024 [2]大连理工大学机械工程学院,辽宁大连116024 [3]大连理工大学精细化工国家重点实验室,辽宁大连116024

出　　处：《分子催化》2010年第3期268-273,共6页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金(NO.20673016);教育部"新世纪优秀人才支持计划"(NCET-07-0136)

摘　　要：以光催化分解NO反应为探针,研究了负载银催化剂在紫外光激发作用下光催化分解NO反应的催化行为.对银物种的调变会对银的光催化活性产生显著影响,结合XRD(X射线粉末衍射),UV-vis(紫外可见漫反射)等表征手段对反应中起重要作用的活性银物种的表征结果表明,高度分散于分子筛内的银离子及银簇是光催化分解NO的活性中心.UV irradiation of Ag/H-ZSM-5 catalyst prepared by an conventional impregnation method in the presence of NO leads leaded to the photocatalytic decomposition of NO into N2 and O2. The catalysts were characterized by using XRD,UV-vis diffuse spectroscopy,it was found that both high-dispersed Ag ions and Ag clusters played important role in the reaction. Ag^＋ was sensitive to higher temperature,however,silver amino complex ions supported on the zeolite can could be pretreated in lower temperature which is was able to acquire more silver ions and silver clusters.

关 键 词：银 分子筛 氮氧化物 光催化 分解 

分 类 号：O643.32[理学—物理化学]