CO{sub 2} adsorption-based separation by metal organic framework (Cu-BTC) versus zeolite (13X)
- Monash University, Vic. (Australia). Cooperative Research Centre for Greenhouse Gas Technology (CO2CRC) and School of Chemistry
The potential for the metal organic framework (MOF) Cu-BTC to selectively adsorb and separate CO{sub 2} is considered. Isotherms for CO{sub 2}, CH{sub 4}, and N{sub 2} were measured from 0 to 15 bar and at temperatures between 25 and 105{sup o}C. The isotherms suggest a much higher working capacity (x4) for CO{sub 2} adsorption on Cu-BTC relative to the benchmark zeolite 13X over the same pressure range. Higher CO{sub 2}/N{sub 2} and CO{sub 2}/CH{sub 4} selectivities in the higher pressure range (1-15 bar) and with lower heats of adsorption were also demonstrated. Cu-BTC was observed to be stable in O{sub 2} at 25{sup o}C, but its crystallinity was reduced in humid environments. The CO{sub 2} adsorption capacity was progressively reduced upon cyclic exposure to water vapor at low relative humidity (<30%), but leveled out at 75% of its original value after several water adsorption/desorption cycles. 27 refs., 1 fig.
- OSTI ID:
- 21261544
- Journal Information:
- Energy and Fuels, Vol. 23, Issue 5; ISSN 0887-0624
- Country of Publication:
- United States
- Language:
- English
Similar Records
Enhanced O2 selectivity versus N2 by partial metal substitution in Cu-BTC
Enhanced Guest@MOF Interaction via Stepwise Thermal Annealing: TCNQ@Cu3(BTC)2