Adsorption of CO2 over univalent cation-exchanged ZSM-5 zeolites
Adsorption of CO2 over univalent cation-exchanged ZSM-5 zeolites
复制标题
一价阳离子交换 ZSM-5 沸石对 CO2 的吸附
DOI：
10.1080/00268979300102281
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发表时间：
1993
影响因子：
1.7
通讯作者：
Y. Ogino
中科院分区：
文献类型：
--
作者：
T. Yamazaki;M. Katoh;S. Ozawa;Y. Ogino
测定了CO_2-MZSM-5（M = Li ~+，Na ~+，K ~+，Rb ~+，Cs ~+）吸附体系的等温线和红外光谱。所观察到的吸附特性很好地近似于物理吸附，其中货车范德华力和静电相互作用力起作用：不可逆吸附（化学吸附）的程度小于总吸附的10%。虽然吸附的CO2分子与阳离子和孔壁都相互作用，但只有CO2-阳离子相互作用才能将IR非活性ν1振动转化为IR活性状态。提出的吸附模型使我们能够计算初始吸附热以及对阳离子位点的CO2的分子取向角。
Isotherms and IR spectra were measured for CO2-MZSM-5 (M = Li+, Na+, K+, Rb+, Cs+) adsorption systems. The observed adsorption characteristics were well approximated by a physical adsorption where the van der Waals force and an electrostatic interaction force are operating: the degree of irreversible adsorption (chemisorption) was less than 10% of the total adsorption. Although the adsorbed CO2 molecule interacts with both the cation and the pore wall, only the CO2-cation interaction can convert the IR inactive ν1 vibration into an IR active state. The adsorption model proposed enables us to calculate the initial heat of adsorption as well as the molecular orientation angle of CO2 against the cation site.