Bhatia SK, Tran K, Nguyen TX, Nicholson D. High-pressure adsorption capacity and structure of CO2 in carbon slit pores: theory and simulation.
LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004;
20:9612-9620. [PMID:
15491194 DOI:
10.1021/la048571i]
[Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We present new simulation results for the packing of single-center and three-center models of carbon dioxide at high pressure in carbon slit pores. The former shows a series of packing transitions that are well described by our density functional theory model developed earlier. In contrast, these transitions are absent for the three-center model. Analysis of the simulation results shows that alternations of flat-lying molecules and rotated molecules can occur as the pore width is increased. The presence or absence of quadrupoles has negligible effect on these high-density structures.
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