Vapor-Phase (p, ρ, T, x) Behavior and Virial Coefficients for the (Argon + Carbon Dioxide) System

2016 ◽  
Vol 62 (1) ◽  
pp. 362-369 ◽  
Author(s):  
Mohamed A. Ben Souissi ◽  
Markus Richter ◽  
Xiaoxian Yang ◽  
Reiner Kleinrahm ◽  
Roland Span
Keyword(s):  
Carbon Dioxide ◽  
Vapor Phase ◽  
Virial Coefficients

The virial coefficients of the carbon dioxide-ethylene system I. Pure gases

1964 ◽  
Vol 277 (1371) ◽  
pp. 448-467 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Second Virial Coefficient ◽  
Virial Coefficients ◽  
Direct Determination ◽  
Expansion Method ◽  
National Physical Laboratory ◽  
Intermolecular Potential ◽  
Gaseous Mixtures ◽  
Physical Laboratory ◽  
The Relationship

This paper describes the first part of an investigation of the thermodynamic properties of gases and gaseous mixtures undertaken a few years ago at the National Physical Laboratory, with the main object of providing data on the relationship between the properties of mixtures and those of the pure constituents. The virial coefficients of carbon dioxide and ethylene have been determined by the series-expansion method over the range —10 to 200 °C, and the representation of the results by several forms of intermolecular potential has been investigated. In the case of ethylene it appears that the second virial coefficient may be represented accurately in terms of a Lennard-Jones 6:12 potential, the parameters of which are determined. In the corresponding representation for carbon dioxide there is a small but systematic discrepancy and evidence is adduced that this may be rectified by the introduction of a quadrupole interaction term on the lines of the theory developed by Pople. The value of the quadrupole moment suggested by this calculation proves to be in fairly close agreement with a recent direct determination. Work on the virial coefficients of mixtures of the two gases will be described in a further paper.

γ-Radiolysis of cyclohexane with electron scavengers. VI. N2O and SF6 as electron scavengers in the vapor phase

1968 ◽  
Vol 46 (22) ◽  
pp. 3511-3516 ◽  
Author(s):  
N. H. Sagert ◽  
R. W. Robinson ◽  
A. S. Blair
Keyword(s):  
Carbon Dioxide ◽  
Vapor Phase ◽  
General Mechanism ◽  
Hydrogen Yield ◽  
Neutral Species ◽  
First Order ◽  
Nitrogen Yield

The γ-radiolysis of cyclohexane has been examined in the vapor phase using N2O and SF6 as electron scavengers. Both N2O and SF6 reduce the hydrogen yield from 4.6 to 3.0 G units, indicating that 3.0 G units of hydrogen have neutral species as precursors, while 1.6 G units have electrons as precursors.Radiolysis of cyclohexane vapor with more than 2% N2O produces 10.4 G units of cyclohexene and 11.5 of nitrogen. Carbon dioxide reduces both these yields; the extrapolated value of G(N2) is equal to G(electrons) at infinite CO2 concentration. Thus O− is likely a precursor of that part of the nitrogen yield in excess of G(electrons), and of the cyclohexene yield associated with this nitrogen yield.The first order molecular detachment of hydrogen is unaffected by electron scavengers, showing that most of this first order yield has neutral precursors. The implications for Dyne's general mechanism of hydrocarbon radiolysis are discussed.

Experimental Data Assessment Test for Composition of Vapor Phase in Equilibrium with Gas Hydrate and Liquid Water for Carbon Dioxide + Methane or Nitrogen + Water System

2012 ◽  
Vol 51 (9) ◽  
pp. 3819-3825 ◽  
Author(s):  
Ali Eslamimanesh ◽  
Saeedeh Babaee ◽  
Amir H. Mohammadi ◽  
Jafar Javanmardi ◽  
Dominique Richon
Keyword(s):  
Experimental Data ◽  
Carbon Dioxide ◽  
Vapor Phase ◽  
Liquid Water ◽  
Gas Hydrate ◽  
Water System ◽  
Data Assessment
Sign in / Sign up

Export Citation Format

Share Document