CAJ | 학술논문

综述了分子在分子筛中的扩散行为及研究进展，包括分子筛的结构与扩散、扩散系数的测量方法和原理等，概括了孔道结构、分子吸附量、活性位及共存组分等影响因素对扩散的影响。在目前的研究中，不同测量手段所得的扩散系数存在较大差异，且催化反应条件下的扩散研究存在一定难度，指出建立统一的扩散测量标准及研究分子在催化反应条件下的扩散行为是未来的发展方向。
종술료분자재분자사중적확산행위급연구진전，포괄분자사적결구여확산、확산계수적측량방법화원리등，개괄료공도결구、분자흡부량、활성위급공존조분등영향인소대확산적영향。재목전적연구중，불동측량수단소득적확산계수존재교대차이，차최화반응조건하적확산연구존재일정난도，지출건립통일적확산측량표준급연구분자재최화반응조건하적확산행위시미래적발전방향。
This review summarized advances in the field of hydrocarbon molecule diffusion in zeolites,including the relationship between structure and diffusion,measurement methods and theories. The influence factors , such as pore structures , adsorption amounts , acid sites and coexisting component,were also summarized in this review. In the current research,diffusion coefficients obtained from different measurement techniques were quite different,and it is difficult to study diffusion behavior in catalytic conditions. Therefore,the establishment of a unified standard for diffusion measurements,and the study of diffusion behavior in the catalytic conditions shall be emphasized in the future.