19-O-03-The effect of silanisation on the intracrystalline diffusivity of ZSM-5

Autor:	W.L. Duncan, K.P. Möller
Rok vydání:	2001
Předmět:	Surface barrier chemistry.chemical_compound Chemical engineering Chemistry Diffusion Deposition (phase transition) Mineralogy ZSM-5 Thermal diffusivity Zeolite Tortuosity Silane
DOI:	10.1016/s0167-2991(01)81256-8
Popis:	Publisher Summary This chapter describes the effect of silanisation on the intraerystalline diffusivity of ZSM-5. Deposition of silane on a zeolite's external surface is a well-established method of increasing its shape selective properties by increasing diffusion resistances. The intracrystalline diffusivities of both parent and silanised ZSM-5 samples are measured by the zero length column technique. The apparent intracrystalline diffusivity does decrease in the modified samples. This change is either the result of a surface barrier caused by pore mouth narrowing or an increase in intracrystalline tortuosity due to the pore blockage.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1d260014a3cc41e280cb23317dba9922 https://doi.org/10.1016/s0167-2991(01)81256-8 Zobrazit plný text záznamu