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Title: Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO 2 chemisorption processes

Abstract

The potential bifunctional mechanism of sodium cobaltate (NaCoO 2) in the catalysis of CO oxidation and subsequent CO 2 chemisorption was systematically analysed. Different catalytic and gravimetric experiments were performed dynamically and isothermally at multiple temperatures. Initially, the CO oxidation process was evaluated using a catalytic reactor connected to a gas chromatograph. Once the production of CO 2 was confirmed, its chemisorption capacity with NaCoO 2 was studied gravimetrically. Catalytic and gravimetric analysis products were studied by XRD, FTIR and SEM to elucidate the double reaction mechanism. Sodium cobaltate exhibited interesting catalytic properties over a wide temperature range, although the NaCoO 2 crystalline structure and chemical composition changed during the CO 2 capture process. Furthermore, all the experiments were theoretically supported by first-principles density functional theory thermodynamic calculations. Finally, the calculated thermodynamic properties of the CO oxidation and CO 2 capture reactions with NaCoO 2 under different oxidation conditions were in good agreement with the experimental measurements.

Authors:
 [1];  [1];  [2];  [1]
  1. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Investigaciones en Materiales
  2. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
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:
1239127
Report Number(s):
NETL-PUB-20095
Journal ID: ISSN 2046-2069; RSCACL
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 3; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; 54 ENVIRONMENTAL SCIENCES; 03 NATURAL GAS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; CO oxidation; CO2 chemisorption; Sodium cobaltate; ab initio thermodynamics

Citation Formats

Vera, Elizabeth, Alcántar-Vázquez, Brenda, Duan, Yuhua, and Pfeiffer, Heriberto. Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO2 chemisorption processes. United States: N. p., 2015. Web. doi:10.1039/C5RA22749F.
Vera, Elizabeth, Alcántar-Vázquez, Brenda, Duan, Yuhua, & Pfeiffer, Heriberto. Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO2 chemisorption processes. United States. doi:10.1039/C5RA22749F.
Vera, Elizabeth, Alcántar-Vázquez, Brenda, Duan, Yuhua, and Pfeiffer, Heriberto. Mon . "Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO2 chemisorption processes". United States. doi:10.1039/C5RA22749F. https://www.osti.gov/servlets/purl/1239127.
@article{osti_1239127,
title = {Bifunctional application of sodium cobaltate as a catalyst and captor through CO oxidation and subsequent CO2 chemisorption processes},
author = {Vera, Elizabeth and Alcántar-Vázquez, Brenda and Duan, Yuhua and Pfeiffer, Heriberto},
abstractNote = {The potential bifunctional mechanism of sodium cobaltate (NaCoO2) in the catalysis of CO oxidation and subsequent CO2 chemisorption was systematically analysed. Different catalytic and gravimetric experiments were performed dynamically and isothermally at multiple temperatures. Initially, the CO oxidation process was evaluated using a catalytic reactor connected to a gas chromatograph. Once the production of CO2 was confirmed, its chemisorption capacity with NaCoO2 was studied gravimetrically. Catalytic and gravimetric analysis products were studied by XRD, FTIR and SEM to elucidate the double reaction mechanism. Sodium cobaltate exhibited interesting catalytic properties over a wide temperature range, although the NaCoO2 crystalline structure and chemical composition changed during the CO2 capture process. Furthermore, all the experiments were theoretically supported by first-principles density functional theory thermodynamic calculations. Finally, the calculated thermodynamic properties of the CO oxidation and CO2 capture reactions with NaCoO2 under different oxidation conditions were in good agreement with the experimental measurements.},
doi = {10.1039/C5RA22749F},
journal = {RSC Advances},
issn = {2046-2069},
number = 3,
volume = 6,
place = {United States},
year = {2015},
month = {12}
}

Journal Article:
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Cited by: 7 works
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Works referenced in this record:

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