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Title: CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3

Abstract

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.

Authors:
 [1];  [2];  [3]
  1. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Ingenieria, Coordinacion de Ingenieria Ambiental
  2. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
  3. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Investigaciones en Materiales
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1335455
Report Number(s):
NETL-PUB-20375
Journal ID: ISSN 0888-5885
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 55; Journal Issue: 37; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; CO oxidation; sodium zirconate; lithium zirconate; CO2 chemisorption; thermal analysis; ab initio thermodynamics

Citation Formats

Alcántar-Vázquez, Brenda, Duan, Yuhua, and Pfeiffer, Heriberto. CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3. United States: N. p., 2016. Web. doi:10.1021/acs.iecr.6b02257.
Alcántar-Vázquez, Brenda, Duan, Yuhua, & Pfeiffer, Heriberto. CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3. United States. https://doi.org/10.1021/acs.iecr.6b02257
Alcántar-Vázquez, Brenda, Duan, Yuhua, and Pfeiffer, Heriberto. 2016. "CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3". United States. https://doi.org/10.1021/acs.iecr.6b02257. https://www.osti.gov/servlets/purl/1335455.
@article{osti_1335455,
title = {CO Oxidation and Subsequent CO2 Chemisorption on Alkaline Zirconates: Li2 ZrO3 and Na2 ZrO3},
author = {Alcántar-Vázquez, Brenda and Duan, Yuhua and Pfeiffer, Heriberto},
abstractNote = {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.},
doi = {10.1021/acs.iecr.6b02257},
url = {https://www.osti.gov/biblio/1335455}, journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 37,
volume = 55,
place = {United States},
year = {Fri Aug 26 00:00:00 EDT 2016},
month = {Fri Aug 26 00:00:00 EDT 2016}
}

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Works referenced in this record:

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  • Alcántar-Vázquez, Brenda; Gómez-García, J. Francisco; Tavizon, Gustavo
  • The Journal of Physical Chemistry C, Vol. 118, Issue 45
  • https://doi.org/10.1021/jp508842e

CO 2 Absorption on Na 2 ZrO 3 :  A Kinetic Analysis of the Chemisorption and Diffusion Processes
journal, April 2008


Syntheses and structures of lithium zirconates for high-temperature CO2 absorption
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journal, November 2011


Effect of Oxygen Addition on the Thermokinetic Properties of CO 2 Chemisorption on Li 2 ZrO 3
journal, October 2010


Analysis and perspectives concerning CO2 chemisorption on lithium ceramics using thermal analysis
journal, November 2011


Thermal Behavior and CO 2 Absorption of Li 2- x Na x ZrO 3 Solid Solutions
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Microstructural Thermal Evolution of the Na 2 CO 3 Phase Produced during a Na 2 ZrO 3 –CO 2 Chemisorption Process
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Works referencing / citing this record:

CO2–CO capture and kinetic analyses of sodium cobaltate under various partial pressures
journal, September 2019


Recent advances in lithium containing ceramic based sorbents for high-temperature CO 2 capture
journal, January 2019