Effect of Single Walled Carbon Nanotubes on Natural Gas Hydrate Formation
Volume 11, Issue 3, Summer 2014, Pages 67-73
A. Ghozatloo, M. Shariaty-Niassar, M. Hassanisadi
Abstract Using Co-Mo/MgO catalyst, single walled carbon nanotubes with a diameter of 2nm and a length of 10 μm were produced by chemical vapor deposition process and characterized by XRD, FTIR and SEM. Synthesized single-walled carbon nanotubes were dissolved in water to make a 1w% solution and stabilized by adding sodium dodecyl sulfate surfactant. The synthesized stabilized nanofluid was used in the gaseous hydrate formation at a temperature of 4˚C and pressure of 1000 psig. The results were compared with a water/surfactant control solution and it was found that carbon
nanotubes have reduced the duration of dissolution process by 58.9% and duration of the induction process by 75.5%. In addition, the amount of gas entrapment and stability of the gas in the hydrate were increased by 13.6% and 18.2%, respectively.
Calculation of Physical Properties of the Methanol-Water Mixture Using Molecular Dynamics Simulation
Volume 6, Issue 4, Autumn 2009, Pages 62-72
N. Farhadian, M. Shariaty-Niassar
Abstract In this study some properties ofthe methanol-water mixture such as diffusivity, density, viscosity, and hydrogen bonding were calculated at different temperatures and atmospheric pressure using molecular dynamics simulations (MDS). The results were compared with the available experimental data as well as some theoretical models; overall indicating a good agreement. This shows the useful and effective application of MDS for determination ofphysical properties.