Methane gas hydrates, crystalline inclusion compounds formed from methane and water,
are found in marine continental margin and permafrost sediments worldwide. This article …

A new equation of state for the thermodynamic properties of natural gases, similar gases,
and other mixtures, the GERG-2008 equation of state, is presented in this work. This …

The current study has aimed at develo** an approach replacing the lists of the compound-
specific molecular parameters attached to perturbed chain-statistical association fluid theory …

Polar soft-SAFT has been used in this work as a modeling tool to systematically assess the
effect of impurities on the thermodynamic behavior of natural gas systems based on …

Natural gas (NG) is a mixture of 21 elements and widely used in the industries and
domestics. Knowledge of its thermodynamic properties is essential for designing appropriate …

Measuring adiabatic sound speed is an effective method to characterize gases with different
molecular weights because sound speed mainly depends on molecular weight at a given …

We report on the use of a photoacoustic Helmholtz sensor for the detection of large
concentrations of methane. In this case, methane is in concentration where the …

Speed of sound is one of the thermodynamic properties that can be measured with least
uncertainty and is of great interest in develo** equations of state. Moreover, accurate …

The vapor pressures of isobutane (R600a) were measured from (259 to 406) K. The
uncertainty of the vapor pressures was estimated to be less than 300 Pa. The measured …

Comprehensive (p, ρ, T) measurements on two gas mixtures of (0.9 CH4+ 0.1 N2) and (0.8
CH4+ 0.2 N2) have been carried out at six temperatures between 240 and 400K and at …