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High-Pressure CO2/CH4 Separation Using SAPO-34 Membranes
Abstract
SAPO-34 membranes on stainless steel, tubular supports separated CO 2 from CH 4 at feed pressures up to 3.1 MPa. The highest CO 2 permeance was 2.4 × 10 -7 mol/(m 2 s Pa) for a 50/50 feed mixture at a pressure drop of 0.14 MPa. For a pressure drop of 3 MPa, the CO 2 /CH 4 separation selectivities at 253 K were 140−150; at lower pressure drops, the highest selectivity was 270. The highest CO 2 flux was 21 kg/(m 2 h) at 295 K and a pressure drop of 3 MPa. Separation selectivity decreased as temperature increased because separation was partly based on competitive adsorption. As transmembrane pressure drop increased, both CO 2 flux and CO 2 permeate concentration increased for a 50/50 mixture. The flux pressure dependence was modeled by Maxwell−Stefan diffusion for mixtures. Methane decreased the CO 2 diffusion rate and, thus, decreased the CO 2 flux. The CH 4 flux was also lower in a mixture because CO 2 inhibits CH 4 adsorption.
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Cited by
CO2 capture and separation technologies for end-of-pipe applications – A review
Olajire, A. A. (2010) · Energy · doi:10.1016/j.energy.2010.02.030 · Cited by 1,217
Natural gas treating by selective adsorption: Material science and chemical engineering interplay
Tagliabue, M., Farrusseng, D., Valencia, S., Aguado, S., Ravon, U., Rizzo, C., Corma, A., & Mirodatos, C. (2009) · Chemical Engineering Journal · doi:10.1016/j.cej.2009.09.010 · Cited by 471
Snyder, M. A., & Tsapatsis, M. (2007) · Angewandte Chemie International Edition · doi:10.1002/anie.200604910 · Cited by 355
Recent advancement in biogas enrichment and its applications
Kadam, R., & Panwar, N. L. (2017) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2017.01.167 · Cited by 355
Alumina-Supported SAPO-34 Membranes for CO2/CH4 Separation
Carreon, M. A., Li, S., Falconer, J. L., & Noble, R. D. (2008) · Journal of the American Chemical Society · doi:10.1021/ja801294f · Cited by 310
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Metadata
- Authors
- Li, S., Martinek, J. G., Falconer, J. L., Noble, R. D., & Gardner, T. Q.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-03-15
- Volume
- 44
- Issue
- 9
- Pages
- 3220-3228
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2004595364
- Cited by
- 184
- References
- 0
- FWCI
- 32.66
- Type
- journal article
- Language
- en
- Open access
- closed
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