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Liquid‐phase diffusion and adsorption of pyridine in porous silica‐alumina pellets
Author(s) -
Van Vuuren D. S.,
Stander C. M.,
Glasser David
Publication year - 1984
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690300410
Subject(s) - pellets , diffusion , thermal diffusivity , adsorption , porosity , mass transfer , heptane , pellet , volume (thermodynamics) , phase (matter) , chemical engineering , surface diffusion , chemistry , materials science , activated alumina , fumed silica , analytical chemistry (journal) , chromatography , thermodynamics , composite material , organic chemistry , physics , engineering
The adsorption and effective diffusivity of pyridine dissolved in heptane were measured in silica‐alumina pellets using a specially developed single‐pellet continous‐flow diffusion cell. The measured diffusivities varied between 0.43 × 10 −9 and 3.25 × 10 −9 m 2 ·s −1 ; the temperature dependence of the diffusivities indicated that both pore volume diffusion and surface diffusion play a role in the mass transfer.