金属离子交换分子筛的NO吸附性能  

Adsorption Prperties of Nitrogen Monooxide on Metal Ion-exchanged Zeolites

作　　者：张文祥[1] 贾明君[1] 吴通好[1] 孙铁 八寻秀典[3] 岩本正和 泉顺 

机构地区：[1]吉林大学化学系,长春130023 [2]哈尔滨市环境监测中心站,哈尔滨150076 [3]北海道大学触媒研究中心 [4]三菱重工长崎研究所

出　　处：《高等学校化学学报》1997年第12期1999-2003,共5页Chemical Journal of Chinese Universities

基　　金：国家教委归国留学人员科研启动基金;长春应用化学研究中心资助

摘　　要：在固定床流动吸附装置上利用吸附一脱附法测定了各种金属离子交换分子筛上NO吸附性能．结果表明，在ZSM－5上NO的可逆吸附量（qrev）与不可逆吸附量（qiir）随交换金属离子的不同而不同．单位交换金属离子的NO可逆吸附量（qrev）与不可逆吸附量（qiir）随分子筛铝含量的减少而增加．qrev与qiir在ZSM－5分子筛上不随交换度变化，而在丝光沸石上却随交换度的变化而改变．The adsorption properties of nitrogen mon0oxide (NO) on various metal ion-exchanged zeolites were examined by adsorption-desorption measurement in a fixed bed flowapparatus. The amounts of reversible (q,..) and irreversible (q',,) adsorption of NO werechanged with the types of metal ion and ze0lite structure. Am0ng the samples tested, thecopper ion-exchanged ZSM-5 and silver ion-exchanged mordenite showed the greatest abilityfor reversible ads0rption of NO. The am0unts 0f reversible and irreversible ads0rption of NOper metal ion exchanged increased with decreasing aluminum content of zeolites, and wereconstant, independent 0f the ion exchange level for ZSM-5 ze0lites, but changed with the ionexchange level f0r mordenite zeolites- It has also been found that the adsorption propertiesare dependent on adsorption temperature: qi., increased with decreasing adsorption tempera-ture for b0th c0pper and silver ion exchanged ze0lites, h0wever, q,.. of Cu-ZSM-5 showed amaximum at 243 K, and q,.. of Ag-MOR increased with decreasing adsorption temperature.

关 键 词：金属离子交换 分子筛 一氧化氮 吸附 ZSM-5 

分 类 号：O647.33[理学—物理化学] O613.61[理学—化学]