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Properties of a Nano CaO/Al2O3 CO2 Sorbent
Abstract
This project studied the properties of nano CaO/Al 2 O 3 as a high-temperature CO 2 sorbent for its use in an adsorption enhanced reforming reaction. The sorbent containing nano CaCO 3 precursors and aluminum oxide was prepared, and evaluation of the CO 2 adsorption properties by a thermogravimetric analyzer, the results show that nano CaO/Al 2 O 3 has a faster decomposition rate and has a higher CO 2 adsorption ratio than micro CaO/Al 2 O 3 . The maximum adsorption ratio occurs at temperatures of 650 °C under a CO 2 partial pressure of 0.33 atm. Durability studies show that the CO 2 adsorption ratio remains at 68.3% after 50 cyclic runs under a carbonation temperature of 650 °C and calcination temperature of 800 °C, respectively. XRD, SEM, and BET were used for studying the change of micro characteristics of the CO 2 sorbents before and after multiple carbonation−calcination runs. The results showed that the pore size of CaO/Al 2 O 3 sorbents was enlarged and that a new substance (Ca 12 Al 14 O 33 ) was formed even under a temperature of 800 °C for the function of keeping the compound stable and durable.
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Cited by
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Yu, C.-H., Huang, C.-H., & Tan, C.-S. (2012) · Aerosol and Air Quality Research · doi:10.4209/aaqr.2012.05.0132 · Cited by 1,730
Super-dry reforming of methane intensifies CO 2 utilization via Le Chatelier’s principle
Buelens, L. C., Galvita, V. V., Poelman, H., Detavernier, C., & Marin, G. B. (2016) · Science · doi:10.1126/science.aah7161 · Cited by 528
Calcium looping sorbents for CO2 capture
Erans, M., Manovic, V., & Anthony, E. J. (2016) · Applied Energy · doi:10.1016/j.apenergy.2016.07.074 · Cited by 369
Performance Enhancement of Calcium Oxide Sorbents for Cyclic CO2 Capture—A Review
Liu, W., An, H., Qin, C., Yin, J., Wang, G., Feng, B., & Xu, M. (2012) · Energy & Fuels · doi:10.1021/ef300220x · Cited by 320
Metadata
- Authors
- Wu, S. F., Li, Q. H., Kim, J. N., & Yi, K. B.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-11-28
- Volume
- 47
- Issue
- 1
- Pages
- 180-184
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2254426098
- Cited by
- 201
- References
- 0
- FWCI
- 5.03
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wu, S. F., Li, Q. H., Kim, J. N., & Yi, K. B. (2008). Properties of a Nano CaO/Al2O3 CO2 Sorbent. Industrial & Engineering Chemistry Research. https://doi.org/10.1021/ie0704748
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