Thermocatalytic analysis of CO2-CO selective chemisorption mechanism on lithium cuprate (Li2CuO2) and oxygen addition effect
Abstract
In the present paper, thermogravimetric and catalytic analyses were performed in order to evidence the chemisorption selective mechanism followed during the CO and CO2 chemisorption processes on Li2CuO2 under different atmosphere conditions. Results were contrasted with some thermodynamic data. According to TG results, when the gas flow was composed by one gas (CO or CO2), chemisorption occurred through a superficial reaction followed by a volumetric capture. In the CO case, a double process was produced; CO oxidation and subsequent CO2 chemisorption. Here, Li2CuO2, initially, catalyzed the CO oxidation and then it sorbed CO2. However, as Li2CuO2 structure and composition evolves, it could not be strictly considered as a catalyst. On the other hand, when both gases were present (CO-CO2), a chemisorption competition was observed as a function of temperature, where CO was always selectively chemisorbed. Finally and furthermore, O2 presence modified positively the chemisorption abilities in binary (CO-O2 and CO2-O2) and ternary (CO-CO2-O2) gas systems, in comparison with analogous tests performed in absence of O2.
- Authors:
-
- National Autonomous Univ. of Mexico, Mexico City (Mexico). Inst. of Materials Research. Surface Physics and Reactivity Lab. (LaFReS)
- National Energy Technology Lab. (NETL), Pittsburgh, PA (United States)
- Publication Date:
- Research Org.:
- National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); National Autonomous Univ. of Mexico, Mexico City (Mexico)
- Sponsoring Org.:
- USDOE; National Council of Science and Technology (CONACYT) (Mexico); UNAM Support Program for Research Projects and Technological Innovation (PAPIIT) (Mexico)
- OSTI Identifier:
- 1461405
- Grant/Contract Number:
- 251801; IN-101916
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Thermochimica Acta
- Additional Journal Information:
- Journal Volume: 660; Journal ID: ISSN 0040-6031
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; CO2 chemisorption; CO oxidation; selective sorption process; lithium cuprate
Citation Formats
Yanez-Aulestia, Ana, Gomez-Garcia, J. Francisco, Mendoza-Nieto, J. Arturo, Duan, Yuhua, and Pfeiffer, Heriberto. Thermocatalytic analysis of CO2-CO selective chemisorption mechanism on lithium cuprate (Li2CuO2) and oxygen addition effect. United States: N. p., 2018.
Web. doi:10.1016/j.tca.2017.12.027.
Yanez-Aulestia, Ana, Gomez-Garcia, J. Francisco, Mendoza-Nieto, J. Arturo, Duan, Yuhua, & Pfeiffer, Heriberto. Thermocatalytic analysis of CO2-CO selective chemisorption mechanism on lithium cuprate (Li2CuO2) and oxygen addition effect. United States. https://doi.org/10.1016/j.tca.2017.12.027
Yanez-Aulestia, Ana, Gomez-Garcia, J. Francisco, Mendoza-Nieto, J. Arturo, Duan, Yuhua, and Pfeiffer, Heriberto. Fri .
"Thermocatalytic analysis of CO2-CO selective chemisorption mechanism on lithium cuprate (Li2CuO2) and oxygen addition effect". United States. https://doi.org/10.1016/j.tca.2017.12.027. https://www.osti.gov/servlets/purl/1461405.
@article{osti_1461405,
title = {Thermocatalytic analysis of CO2-CO selective chemisorption mechanism on lithium cuprate (Li2CuO2) and oxygen addition effect},
author = {Yanez-Aulestia, Ana and Gomez-Garcia, J. Francisco and Mendoza-Nieto, J. Arturo and Duan, Yuhua and Pfeiffer, Heriberto},
abstractNote = {In the present paper, thermogravimetric and catalytic analyses were performed in order to evidence the chemisorption selective mechanism followed during the CO and CO2 chemisorption processes on Li2CuO2 under different atmosphere conditions. Results were contrasted with some thermodynamic data. According to TG results, when the gas flow was composed by one gas (CO or CO2), chemisorption occurred through a superficial reaction followed by a volumetric capture. In the CO case, a double process was produced; CO oxidation and subsequent CO2 chemisorption. Here, Li2CuO2, initially, catalyzed the CO oxidation and then it sorbed CO2. However, as Li2CuO2 structure and composition evolves, it could not be strictly considered as a catalyst. On the other hand, when both gases were present (CO-CO2), a chemisorption competition was observed as a function of temperature, where CO was always selectively chemisorbed. Finally and furthermore, O2 presence modified positively the chemisorption abilities in binary (CO-O2 and CO2-O2) and ternary (CO-CO2-O2) gas systems, in comparison with analogous tests performed in absence of O2.},
doi = {10.1016/j.tca.2017.12.027},
journal = {Thermochimica Acta},
number = ,
volume = 660,
place = {United States},
year = {Fri Jan 05 00:00:00 EST 2018},
month = {Fri Jan 05 00:00:00 EST 2018}
}
Web of Science
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