Results 251 to 260 of about 357,256 (297)

CO2/CH4, CH4/H2 and CO2/CH4/H2 separations at high pressures using Mg2(dobdc)

Microporous and Mesoporous Materials, 2012
High-pressure separations of binary and ternary mixtures of CO2, CH4, and H2 are relevant to carbon dioxide capture as well as hydrogen and natural gas purification. Metal-organic frameworks represent a class of porous materials that could be used to accomplish these separations, and Mg2(dobdc) (dobdc4− = 1,4-dioxido-2,5-benzenedicarboxylate), also ...
Herm, Z.R., Krishna, R., Long, J.R.
openaire   +2 more sources

Kinetic models for the CH4(ν3) deactivation in CH4-CH4 collisions. Interpretation of experimental results

Chemical Physics Letters, 1983
Abstract Various kinetic models for the CH 4 (ν 3 ) deactivation in CH 4 -CH 4 collisions at low temperatures ( T ⪅ 300 K) are proposed and applied to interpret recently published experimental results. We discuss the value of the rate constant of the single-quantum process CH 4 (2ν 4 ) → CH 4 (ν 4 ) (V-T,R process).
J. Laterrasse, M. Huetz-Aubert
openaire   +1 more source

Co-processing CH4 and oxygenates on Mo/H-ZSM-5: 2. CH4–CO2 and CH4–HCOOH mixtures

Physical Chemistry Chemical Physics, 2013
Co-processing of formic acid or carbon dioxide with CH4 (FA/CH4 = 0.01-0.03 and CO2/CH4 = 0.01-0.03) on Mo/H-ZSM-5 catalysts at 950 K with the prospect of kinetically coupling dehydrogenation and deoxygenation cycles results instead in a two-zone, staged bed reactor configuration consisting of upstream oxygenate/CH4 reforming and downstream CH4 ...
Jeremy, Bedard, Do-Young, Hong, Aditya, Bhan   +2 more
openaire   +2 more sources

The influence of rotation on the vibrational relaxation of the CH4 molecule. Study of the transfers CH4(ν2) + Ar → CH4(0) + Ar and CH4(ν4) + Ar → CH4(0) + Ar

Chemical Physics, 1983
Abstract The influence of rotational energy transfers on the vibrational relaxation of the ν 2 and ν 4 modes of CH 4 are studied. The interaction matrix is built up in the framework of the semiclassical coupled-states approximation using the asymptotic expression of (3 j ) symbols. It is assumed that the intermolecular potential is the sum of five
Georges Jolicard, Marie-Yvonne Perrin
openaire   +1 more source

CO2-CH4 Membrane Separation

2015
Raw natural gas and biogas, used as energy supplies, have to be treated in order to eliminate undesirable inert and corrosive species, in particular water and co2. Membrane separation technology is an attractive alternative to traditional methods of gas mixture separation and purification.
Sellaro M, Brunetti A, Drioli E, Barbieri G   +3 more
openaire   +2 more sources

Calculations on the excess enthalpy of the mixtures CH4-Ar, CH4-N2, H2-CH4, He-CH4 and He-Ar at high densities

Physica, 1968
Abstract The behaviour of a binary mixture at high density can satisfactorily be described by the liquid “theories” of Prigogine and Scott. Starting from the assumption that the mixture and its components obey the law of the corresponding states it is possible to form a reduced equation of state with variables reduced with parameters of the mixture ...
B. Van Eijnsbergen, J.J.M. Beenakker
openaire   +1 more source

Direct Measurement of the Intermolecular Potentials of CH4–Xe, CH4–Kr, CH4–Ar, and CH4–Ne from the Extended Principle of Corresponding States

Bulletin of the Chemical Society of Japan, 1996
Abstract An inversion procedure is used to obtain from the extended principle of corresponding states the interaction potentials over a range of reduced temperature extending from 1 to the onset of ionization. These directly measured potentials for CH4–Xe, CH4–Kr, CH4–Ar, and CH4–Ne agree excellently with the potentials independently ...
Ali Boushehri, Fariba S Hashemi
openaire   +1 more source

Reprint of: CO2/CH4, CH4/H2 and CO2/CH4/H2 separations at high pressures using Mg2(dobdc)

Microporous and Mesoporous Materials, 2012
High-pressure separations of binary and ternary mixtures of CO2, CH4, and H2 are relevant to carbon dioxide capture as well as hydrogen and natural gas purification. Metal-organic frameworks represent a class of porous materials that could be used to accomplish these separations, and Mg2(dobdc) (dobdc4− = 1,4-dioxido-2,5-benzenedicarboxylate), also ...
Herm, Z.R., Krishna, R., Long, J.R.
openaire   +3 more sources

Scattering of High-Velocity Neutral Particles. XII. He–CH4; He–CF4. CH4–CH4 and CF4–CF4 Interactions

The Journal of Chemical Physics, 1961
Collision cross sections have been measured for helium atoms with energies between 500 and 2100 ev, scattered in room-temperature CH4 and CF4. The results have been analyzed to obtain the average potential between a helium atom and a CH4 molecule, 〈V(r)〉Av=602/r9.43ev,for r between 1.92 and 2.37 A, and the average potential between a helium atom and a ...
I. Amdur, M. S. Longmire, E. A. Mason
openaire   +1 more source