Effect of SOx adsorption on layered double hydroxides for CO2 capture

Ram Reddy, M. K., Xu, Z. P., Lu, G. Q. (Max) and Diniz da Costa, J. C. (2008) Effect of SOx adsorption on layered double hydroxides for CO2 capture. Industrial & Engineering Chemistry Research, 47 19: 7357-7360. doi:10.1021/ie8004226


Author Ram Reddy, M. K.
Xu, Z. P.
Lu, G. Q. (Max)
Diniz da Costa, J. C.
Title Effect of SOx adsorption on layered double hydroxides for CO2 capture
Formatted title
Effect of SOx adsorption on layered double hydroxides for CO2 capture
Journal name Industrial & Engineering Chemistry Research   Check publisher's open access policy
ISSN 0888-5885
Publication date 2008-10-07
Year available 2008
Sub-type Article (original research)
DOI 10.1021/ie8004226
Open Access Status Not yet assessed
Volume 47
Issue 19
Start page 7357
End page 7360
Total pages 4
Editor D. R . Paul,
S. D. Alexandratos,
Place of publication Washington, DC
Publisher American Chemical Society
Language eng
Subject C1
090401 Carbon Capture Engineering (excl. Sequestration)
970109 Expanding Knowledge in Engineering
960302 Climate Change Mitigation Strategies
Abstract In this work, we investigate the effect of SOx on the performance of layered double hydroxide (LDH) derivatives used as adsorbent for CO2 capture. LDH derivatives such as layer double oxide (LDO) have shown great potential for high-temperature CO2 separation from flue gases. We found that even at low flue gas feed concentrations of SOx (0.1%), the sorption values were very high, reaching a maximum sorption capacity equivalent to 11.04% of the sorbent weight. Regeneration of LIDO in pure helium resulted in regaining up to 58% of its original sorption capacity. Temperature cycling also revealed the irreversible nature of SOx sorption. In addition, regeneration after CO2/SOx and SOx/CO2 sorption experiments showed that SOx replaces CO2. SOx sorption over CO2 was favored due to the strong acid-base interactions between SOx and LDO, thus forming sulfites and sulfates. Hence, LDH derivatives for CO2 capture require a de-SOx unit operation upstream.
Keyword Hydrotalcite-Like Compounds
Carbon-dioxide
High-Temperature
Derivatives
Evolution
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID CO2CRC
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: 2009 Higher Education Research Data Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 30 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 30 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 26 Mar 2009, 20:58:07 EST by Amanda Lee on behalf of School of Chemical Engineering