8 Diffusion in molecular solids

Chadwick, Alan V.

doi:10.1007/10542761_15

Cited by 2 publications

(3 citation statements)

References 118 publications

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“…McConnell et al (1972) and Devaux et al (1973) suggest that diffusion in lipid bilayers occurs by the first mechanism, with interchange of neighboring pairs of molecules. However, it is the third mechanism which accounts best for the diffusion in organic plastic crystals (Chadwick and Sherwood, 1971;Folland and Strange, 1972), and it seems to us to be the most likely mechanism for diffusion in lipid bilayers. As with a number of the organic plastic crystals, it is likely that the .volume of the vacancy is less than that of a lipid molecule, because of some inward relaxation of surrounding molecules.…”

Section: Lateral Diffusion Of Lipid Moleculesmentioning

confidence: 96%

“…e Jackson and Strange (1971). 8.4 X 10-11 a 5.7 X 10-11 a (Chadwick and Sherwood, 1971). It is suggested that the predominant lattice "point" defect can be regarded as a relaxed vacancy, that is, a vacant lattice site into which a number of the surrounding molecules have collapsed to yield a small disordered region.…”

Section: Intermolecular Dipole-dipole Relaxationmentioning

confidence: 99%

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Nuclear Magnetic Relaxation and the Biological Membrane

Lee

Birdsall

Metcalfe

1974

Methods in Membrane Biology

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Section: Lateral Diffusion Of Lipid Moleculesmentioning

confidence: 96%

Section: Intermolecular Dipole-dipole Relaxationmentioning

confidence: 99%

Nuclear Magnetic Relaxation and the Biological Membrane

Lee

Birdsall

Metcalfe

1974

Methods in Membrane Biology

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“…where ∆h sub i is the enthalpy of sublimation of component i, which equals 28.83 kJ/mol for CO 2 [26] and 23.8 kJ/mol for H 2 S [27].…”

Section: H Vapor =mentioning

confidence: 99%

Natural Gas Sweetening Using an Energy-Efficient, State-of-the-Art, Solid–Vapor Separation Process

et al. 2022

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With the anticipated rise in global demand for natural gas (NG) and liquefied natural gas (LNG), sour gas reserves are attracting the attention of the gas industry as a potential resource. However, to monetize these reserves, sour natural gas has to be sweetened by removing acid gases (carbon dioxide and/or hydrogen sulfide) before liquefaction. The solidification of these acid gases could be the basis for their separation from natural gas. In this study, a state-of-the art solid-vapor (SV) separation unit is developed for removal of acid gases from methane and simulated using a customized Aspen Plus operation unit. The operating principles and conditions, mathematical model, and performance results are presented for the SV unit. Further performance analyses, means of optimization and comparisons to conventional methods used by the industry were studied. Results showed that for similar sweet gas purity, the developed SV unit consumes only 27% of the energy required by the amine sweetening unit. Furthermore, it saves on capital costs, as it requires less equipment and does not suffer from high levels of corrosion.

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8 Diffusion in molecular solids

Cited by 2 publications

References 118 publications

Nuclear Magnetic Relaxation and the Biological Membrane

Nuclear Magnetic Relaxation and the Biological Membrane

Natural Gas Sweetening Using an Energy-Efficient, State-of-the-Art, Solid–Vapor Separation Process

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