Douglas Ruthven - Academia.edu (original) (raw)
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Papers by Douglas Ruthven
The Canadian Journal of Chemical Engineering, 1979
ABSTRACT
Chemical Engineering Science, 1991
Industrial & Engineering Chemistry Fundamentals, 1985
ABSTRACT
Fusion Technology, 1992
This paper reports on Pressure Swing Adsorption (PSA), a well established industrial process for ... more This paper reports on Pressure Swing Adsorption (PSA), a well established industrial process for separating and purifying industrial gases, it is proposed for recovery of hydrogen isotopes from the ITER (International Thermonuclear Experimental Reactor) solid breeder He purge stream. The PSA process has an inherent advantage over a recently proposed Temperature Swing Adsorption (TSA) design because it allows much faster
Chemical Engineering Technology, Aug 1, 2007
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1972
ABSTRACT
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1980
ABSTRACT
Ind Eng Chem Res, 1996
ABSTRACT
The Journal of Physical Chemistry B, 2004
Zeolites, Nov 1, 1988
ABSTRACT
Microporous and Mesoporous Materials, 2007
Adsorption, 2001
The kinetics of sorption of Cu++ ions in a typical cation exchange resin (IONAC SR-5) have been s... more The kinetics of sorption of Cu++ ions in a typical cation exchange resin (IONAC SR-5) have been studied by two methods; the traditional batch method which involves following the change in Cu++ concentration in a solution of finite volume in contact with the resin, and by removing and sectioning individual resin particles to follow the progress of the adsorption front.
Microporous and Mesoporous Materials, 2013
Journal of the American Chemical Society, Feb 1, 2011
Nanoporous solids are attractive materials for energetically efficient and environmentally friend... more Nanoporous solids are attractive materials for energetically efficient and environmentally friendly catalytic and adsorption separation processes. Although the performance of such materials is largely dependent on their molecular transport properties, our fundamental understanding of these phenomena is far from complete. This is particularly true for the mechanisms that control the penetration rate through the outer surface of these materials (commonly referred to as surface barriers). Recent detailed sorption rate measurements with Zn(tbip) crystals have greatly enhanced our basic understanding of such processes. Surface resistance in this material has been shown to arise from the complete blockage of most of the pore entrances on the outer surface, while the transport resistance of the remaining open pores is negligibly small. More generally, the revealed correlation between intracrystalline diffusion and surface permeation provides a new view of the nature of transport resistances in nanoporous materials acting in addition to the diffusion resistance of the regular pore network, leading to a rational explanation of the discrepancy which is often observed between microscopic and macroscopic diffusion measurements.
Journal of Colloid and Interface Science, 1980
ABSTRACT
The Canadian Journal of Chemical Engineering, 1979
ABSTRACT
Chemical Engineering Science, 1991
Industrial & Engineering Chemistry Fundamentals, 1985
ABSTRACT
Fusion Technology, 1992
This paper reports on Pressure Swing Adsorption (PSA), a well established industrial process for ... more This paper reports on Pressure Swing Adsorption (PSA), a well established industrial process for separating and purifying industrial gases, it is proposed for recovery of hydrogen isotopes from the ITER (International Thermonuclear Experimental Reactor) solid breeder He purge stream. The PSA process has an inherent advantage over a recently proposed Temperature Swing Adsorption (TSA) design because it allows much faster
Chemical Engineering Technology, Aug 1, 2007
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1972
ABSTRACT
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1980
ABSTRACT
Ind Eng Chem Res, 1996
ABSTRACT
The Journal of Physical Chemistry B, 2004
Zeolites, Nov 1, 1988
ABSTRACT
Microporous and Mesoporous Materials, 2007
Adsorption, 2001
The kinetics of sorption of Cu++ ions in a typical cation exchange resin (IONAC SR-5) have been s... more The kinetics of sorption of Cu++ ions in a typical cation exchange resin (IONAC SR-5) have been studied by two methods; the traditional batch method which involves following the change in Cu++ concentration in a solution of finite volume in contact with the resin, and by removing and sectioning individual resin particles to follow the progress of the adsorption front.
Microporous and Mesoporous Materials, 2013
Journal of the American Chemical Society, Feb 1, 2011
Nanoporous solids are attractive materials for energetically efficient and environmentally friend... more Nanoporous solids are attractive materials for energetically efficient and environmentally friendly catalytic and adsorption separation processes. Although the performance of such materials is largely dependent on their molecular transport properties, our fundamental understanding of these phenomena is far from complete. This is particularly true for the mechanisms that control the penetration rate through the outer surface of these materials (commonly referred to as surface barriers). Recent detailed sorption rate measurements with Zn(tbip) crystals have greatly enhanced our basic understanding of such processes. Surface resistance in this material has been shown to arise from the complete blockage of most of the pore entrances on the outer surface, while the transport resistance of the remaining open pores is negligibly small. More generally, the revealed correlation between intracrystalline diffusion and surface permeation provides a new view of the nature of transport resistances in nanoporous materials acting in addition to the diffusion resistance of the regular pore network, leading to a rational explanation of the discrepancy which is often observed between microscopic and macroscopic diffusion measurements.
Journal of Colloid and Interface Science, 1980
ABSTRACT