CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3
- Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Ingenieria, Coordinacion de Ingenieria Ambiental
- National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
- Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Investigaciones en Materiales
Here, two different alkaline zirconates (Li2ZrO3 and Na2ZrO3) were studied as possible bifunctional catalytic-captor materials for CO oxidation and the subsequent CO2 chemisorption process. Initially, CO oxidation reactions were analyzed in a catalytic reactor coupled to a gas chromatograph, using Li2ZrO3 and Na2ZrO3, under different O2 partial flows. We found results clearly showed that Na2ZrO3 possesses much better catalytic properties than Li2ZrO3. After the CO-O2 oxidation catalytic analysis, CO2 chemisorption process was analyzed by thermogravimetric analysis, only for the Na2ZrO3 ceramic. The results confirmed that Na2ZrO3 is able to work as a bifunctional material (CO oxidation and subsequent CO2 chemisorption), although the kinetic CO2 capture process was not the best one under the physicochemical condition used in this case. For Na2ZrO3, the best CO conversions were found between 445 and 580 °C (100%), while Li2ZrO3 only showed a 35% of efficiency between 460 and 503 °C. However, in the Na2ZrO3 case, at temperatures higher than 580 °C its catalytic activity gradually decreases as a result of CO2 capture process. Finally, all these experiments were compared and supported with theoretical thermodynamic data.
- Research Organization:
- National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- OSTI ID:
- 1335455
- Report Number(s):
- NETL-PUB-20375
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 55, Issue 37; ISSN 0888-5885
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
CO2–CO capture and kinetic analyses of sodium cobaltate under various partial pressures
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journal | September 2019 |
Recent advances in lithium containing ceramic based sorbents for high-temperature CO 2 capture
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journal | January 2019 |
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