全硅沸石上有机吸附物亲和性指数的研究

用热分析技术，研究含有不同官能团的有机吸附质分子如：直链烷烃、直链烷 基胺、直链烷基醇等，在结构完美全硅FER,MFI, FAU沸石孔道中的程序升温脱附行 为，测定它们在这些沸石上的吸附量及亲和性指数A_T值，研究孔道半径对亲和性 指数A_T值的影响。结果表明，与沸石Si-O骨架“亲”性强的吸附质的Ar值，随孔 道半径的减小而降低；“憎”性强的的吸附质的Ar值与孔道半径的关系，则呈相反 趋势。

Study on Affinity Index of Adsorbate on Siliceous Zeolites with Different Channel Size

The behavior of desorption of organic adsorbate with different functional group, such as straight-chain alkane, straight-chain alkyl amine, straight-chain alkyl alcohols, on the channel of siliceous FER, MFI, FAU with perfect framework, were invested by thermal analytical method. The loading of adsorbate and affinity index, A T values, were also calculated. The effects of different channel size on affinity index were measured. The results that can be obtained from the research included that the A T values decrease with the decrease of the channel size of zeolites when the adsorbates have strong affinity with the Si-O framework structure of zeolites. On the other hand, the values of A T will increase with the decrease of the channel size of zeolites when the adsorbates have strong 'phobic' with the Si-O framework of zeolites.