Comparison of some models of porous media for gas diffusion

Practical Models for Isothermal Diffusion and Flow of Gases in Porous Solids

“…Our structural model of porous solids is an extension of that used by Johnson and Stewart (1965) and supported by several recent studies (Brown, et al, 1969;Horak and Schneider, 1971; Satterfield and Cadle, 1968). A cross-linked pore network, with attached dead-end pores, is assumed.…”

“…This result includes eq 10 of Johnson and Stewart (1965) and eq 2 of Satterfield and Cadle (1968) as special cases. Equation 11 predicts = Vs for isotropic pore systems with no deadend branches; this value is accurate within a factor of 2 for many pelletted catalysts (Brown, ei Horak and Schneider, 1971; Johnson and Stewart, 1965).…”

Practical Models for Isothermal Diffusion and Flow of Gases in Porous Solids

“…Our structural model of porous solids is an extension of that used by Johnson and Stewart (1965) and supported by several recent studies (Brown, et al, 1969;Horak and Schneider, 1971; Satterfield and Cadle, 1968). A cross-linked pore network, with attached dead-end pores, is assumed.…”

“…This result includes eq 10 of Johnson and Stewart (1965) and eq 2 of Satterfield and Cadle (1968) as special cases. Equation 11 predicts = Vs for isotropic pore systems with no deadend branches; this value is accurate within a factor of 2 for many pelletted catalysts (Brown, ei Horak and Schneider, 1971; Johnson and Stewart, 1965).…”

Elementary Kinetic Theory of Gases

“…Further details are given by, e.g., [33,56,124]. It is noticed that in practical reaction engineering, the classical models are most frequently used due to the complexity of the pellet structure.…”

Binary Diffusion of Gases in Capillaries in the Transition Region between Knudsen and Molecular Diffusion

“…Several investigators have studied transition region diffusion. Generally their work has been related to binary systems in porous solids (Brown, et al, 1969; Cunningham and Geankoplis, 1968;Evans, et al, 1961;Henry, et al, 1967;Horak and Schneider, 1971; Johnson and Stewart, 1965;Rothfeld, 1963; Satterfield and Cadle, 1968; Scott and Dullien, 1962; Wakao and Smith, 1962). Diffusion experiments in pores are generally performed using an open or a closed system.…”

Practical Models for Isothermal Diffusion and Flow of Gases in Porous Solids

“…Our structural model of porous solids is an extension of that used by Johnson and Stewart (1965) and supported by several recent studies (Brown, et al, 1969;Horak and Schneider, 1971; Satterfield and Cadle, 1968). A cross-linked pore network, with attached dead-end pores, is assumed.…”

“…This result includes eq 10 of Johnson and Stewart (1965) and eq 2 of Satterfield and Cadle (1968) as special cases. Equation 11 predicts = Vs for isotropic pore systems with no deadend branches; this value is accurate within a factor of 2 for many pelletted catalysts (Brown, ei Horak and Schneider, 1971; Johnson and Stewart, 1965).…”

Elementary Kinetic Theory of Gases

“…Further details are given by, e.g., [33,56,124]. It is noticed that in practical reaction engineering, the classical models are most frequently used due to the complexity of the pellet structure.…”

Binary Diffusion of Gases in Capillaries in the Transition Region between Knudsen and Molecular Diffusion

“…Several investigators have studied transition region diffusion. Generally their work has been related to binary systems in porous solids (Brown, et al, 1969; Cunningham and Geankoplis, 1968;Evans, et al, 1961;Henry, et al, 1967;Horak and Schneider, 1971; Johnson and Stewart, 1965;Rothfeld, 1963; Satterfield and Cadle, 1968; Scott and Dullien, 1962; Wakao and Smith, 1962). Diffusion experiments in pores are generally performed using an open or a closed system.…”

Practical Models for Isothermal Diffusion and Flow of Gases in Porous Solids

“…Our structural model of porous solids is an extension of that used by Johnson and Stewart (1965) and supported by several recent studies (Brown, et al, 1969;Horak and Schneider, 1971; Satterfield and Cadle, 1968). A cross-linked pore network, with attached dead-end pores, is assumed.…”

“…This result includes eq 10 of Johnson and Stewart (1965) and eq 2 of Satterfield and Cadle (1968) as special cases. Equation 11 predicts = Vs for isotropic pore systems with no deadend branches; this value is accurate within a factor of 2 for many pelletted catalysts (Brown, ei Horak and Schneider, 1971; Johnson and Stewart, 1965).…”

Elementary Kinetic Theory of Gases

“…Further details are given by, e.g., [33,56,124]. It is noticed that in practical reaction engineering, the classical models are most frequently used due to the complexity of the pellet structure.…”

Binary Diffusion of Gases in Capillaries in the Transition Region between Knudsen and Molecular Diffusion

“…Several investigators have studied transition region diffusion. Generally their work has been related to binary systems in porous solids (Brown, et al, 1969; Cunningham and Geankoplis, 1968;Evans, et al, 1961;Henry, et al, 1967;Horak and Schneider, 1971; Johnson and Stewart, 1965;Rothfeld, 1963; Satterfield and Cadle, 1968; Scott and Dullien, 1962; Wakao and Smith, 1962). Diffusion experiments in pores are generally performed using an open or a closed system.…”