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##### Cited by 83 publications
(22 citation statements)
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“…D e can be estimated roughly by the correlation of Weisz and Schwartz [30] in which only molecular diffusion (D m ) is taken into account.…”
Section: Apparent Reaction Rate Constantsmentioning
confidence: 99%
“…D e can be estimated roughly by the correlation of Weisz and Schwartz [30] in which only molecular diffusion (D m ) is taken into account.…”
Section: Apparent Reaction Rate Constantsmentioning
confidence: 99%
“…• 3.0 for a network of randomly interconnected uniform diameter cylindrical pores with no dead ends (Johnson and Stewart, 1965). • 5.0 ( = √ 3/ P ,macro ) for an array of cells that are visualised as cubes or spheres with a fraction P ,macro of their surface open to the neighbouring cell (Weisz and Schwartz, 1962).…”
Section: Discussion On the Magnitude Of Each Intrapellet Structural Pmentioning
confidence: 99%
“…It is a complex entity constantly changing with variations in the characteristics of the pore network such as pore shape, pore size, and pore size distribution, and with variations in the physical conditions such as temperature and pressure. For gaseous diffusion in porous particle, experimental studies have revealed that the ratio of effective diffusivity to ordinary diffusivity, is changed proportional to c 1 3 when bulk diffusion is predominate (Currie, 1960) and proportional to €2-3 when Knudsen diffusion is predominant (Weisz and Schwartz, 1962). Furthermore, the micropore model (Wakao and Smith, 1962) asserts that the effective diffusivity is proportional to €2 if the existence of micropores prevails in the system.…”
Section: The Modelmentioning
confidence: 96%