DOI:10.5488/CMP.19.13003 arXiv:1603.02161
Title:
Gyroidal nanoporous carbons - Adsorption and separation properties explored using computer simulations
Author(s):
| S. Furmaniak (Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin St. 7, 87–100 Torun, Poland) , | |
| P.A. Gauden (Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin St. 7, 87–100 Torun, Poland) , | |
| A.P. Terzyk (Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group, Nicolaus Copernicus University in Torun, Gagarin St. 7, 87–100 Torun, Poland) , | |
| P. Kowalczyk (School of Engineering and Information Technology, Murdoch University, Murdoch, Western Australia 6150, Australia) |
Adsorption and separation properties of gyroidal nanoporous carbons (GNCs) - a new class of exotic nanocarbon materials are studied for the first time using hyper parallel tempering Monte Carlo Simulation technique. Porous structure of GNC models is evaluated by the method proposed by Bhattacharya and Gubbins. All the studied structures are strictly microporous. Next, mechanisms of Ar adsorption are described basing on the analysis of adsorption isotherms, enthalpy plots, the values of Henry’s constants, αs and adsorption potential distribution plots. It is concluded that below pore diameters ca. 0.8 nm, primary micropore filling process dominates. For structures possessing larger micropores, primary and secondary micropore filling mechanism is observed. Finally, the separation properties of GNC toward CO2/CH4, CO2/N2, and CH4/N2 mixtures are discussed and compared with separation properties of Virtual Porous Carbon models. GNCs may be considered as potential adsorbents for gas mixture separation, having separation efficiency similar or even higher than activated carbons with similar diameters of pores.
Key words:
gyroidal nanoporous carbons, adsorption, gas mixtures separation, Monte Carlo simulations
PACS:
05.10.Ln, 05.70.-a, 51.10.+y, 51.30.+i, 64.75.+g
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