期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 110, 期 49, 页码 24834-24836出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp065102b
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We investigate the interaction of ethylene and ethane with a Cu-tricarboxylate complex and show that at low loadings the lighter molecule has a higher binding energy as a result of an increased interaction with the framework Cu and stronger hydrogen bonding with the basic framework oxygens. This leads to selective adsorption of ethylene by a factor of about 2 at low pressure, which is overcome by the stronger van der Waals interaction of ethane at high loadings, explaining recent literature data. The results suggest the possibility of separation of light hydrocarbons at low pressures or in trace amounts.
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