Title of article :
Equilibrium and Thermodynamic Studies of Methane Adsorption on Multi-Walled Carbon Nanotube
Author/Authors :
Monemtabary, Sanaz Nanotechnology Research Institute - Faculty of Chemical Engineering - Nanotechnology and Transport Phenomena Lab - Faculty of Chemical Engineering - Tehran University - Babol University of Technology , Shariati Niasar, Mojtaba Nanotechnology Research Institute - Faculty of Chemical Engineering - Babol University of Technology , Jahanshahi, Mohsen Nanotechnology Research Institute - Faculty of Chemical Engineering - Babol University of Technology , Ghoreyshi, Ali Asghar Nanotechnology Research Institute - Faculty of Chemical Engineering - Babol University of Technology
Abstract :
In this work, The adsorption of methane onto multi-walled carbon nanotubes (MWCNTs) was studied, in which the influences of temperatureand pressure were investigated. The physical properties of the MWCNT were systematically characterised by Scanning Electron Microscopy (SEM) and Brunauere-Emmette- Teller (BET) surface area measurements. The equilibrium adsorption data were analyzed using threecommon adsorption models: Langmuir, Freundlich and Sips. All of the models fit the experimental results well. The adsorption thermodynamic was carried out at 283.15, 298.15and 313.15 K. The isosteric heat of adosrption ( H) was calculated for CH4 and H2, using Claussius–Clapeyron equation. The small amounts of that indicated
physical nature of adsorption mechanism.All values were negative, indicating that the adsorptionis feasible and exothermic process in nature.
Keywords :
Gas separation , Gasadsorption , Multi-walled carbon nanotubes , Methane , Hydrogen
Journal title :
Astroparticle Physics
