摘要
分子筛中的扩散是很重要而又非常复杂的问题.由于扩散机理复杂,影响因素又多,受研究方法所限,人们对分子筛中扩散规律的认识还很不够,因此各种研究分子筛中扩散的某些经验规律的工作是有意义的.
Good linear relationships between the logarithm of diffusivities and dav defined as equation (1) are obtained for low carbon n-alkanes in zeolites 4A, 5A, silicalite and NaX. There is also a good linear relationship between the logarithm of diffusivities and the pore diameter of zeolite (dp) for low carbon w-alkanes. So the diffusivity for a diffusate in a zeolite can be described by the equation as follows:
a and b are constants. This relation could be used to estimate the pore diameter of new zeolite molecular sieves from the measurements of diffusivities of low carbon n-alkanes in them.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1990年第5期609-611,共3页
CIESC Journal
基金
国家自然科学基金资助项目
