International Journal of New Chemistry

61-71

Authors: Azita Salimian; Speideh Ketabi; Jamshid Najafpour

In this study, doped vanadium oxide nanotubes were evaluated using different software to study the absorption of hydrogen gas. Vanadium oxide nanotubes are one of the options for absorption and storage hydrogen gas. In this research study for the first time, the Monte Carlo simulation was used to investigate the hydrogen gas absorption behavior in molybdenum-tungsten, molybdenum-zirconium and zirconium-tungsten doped vanadium oxide nanotub. At 300 K and at different pressures, the amount of hydrogen gas absorption inside and outside the doped nanotubes has been investigated. The results show the maximum adsorption capacity in 50MPa. Also, by comparing the obtained data and absorption isotherms, was determined absorption of hydrogen gas in vanadium oxide nanotube doped with zirconium molybdenum was better than the other two nanotubes.

78-85

Authors: Sara Smith

In this research, RDX energy derivatives with different carbon nanoparticles under different temperature conditions were studied using density functional theory. For this purpose, the materials were first geometric optimized, then the thermodynamic parameters were calculated for all of them. Then, the process of changing the energy-dependent parameters such as specific heat capacity, enthalpy, entropy and Gibbs free energy relative to molecular mass, molecular volume and measured level in this study at a given temperature, were evaluated against each other.

93-100

Authors: Mohamed A. K. Yousef

In this study, the thermodynamic properties of polyvinyl chloride monomer derivatives, PVC with nanoparticles of fullerene, nanotubes and nano cones at room temperature, were studied by DFT method. For this purpose, the materials were first geometric optimized, then the thermodynamic parameters were calculated for all of them. Then, the process of changing the energy-dependent parameters such as specific heat capacity, enthalpy, entropy and Gibbs free energy relative to molecular mass, molecular volume and measured level in this study at a given temperature, were evaluated against each other.