Ce<inf>0.8</inf>Sm<inf>0.15</inf>Sr<inf>0.05</inf>O<inf>2</inf> as Possible Oxidation Catalyst and Assessment of the CaO Addition in the Coupled CO Oxidation-CO<inf>2</inf> Capture Process

Oscar Ovalle-Encinia, J. Arturo Mendoza-Nieto, José Ortiz-Landeros, Heriberto Pfeiffer

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

© 2017 American Chemical Society. A synergetic system for the coupled CO oxidation and CO2 trapping was proposed and studied in the present work by using a ceria-based material and CaO as catalyst and absorbent, respectively. Specifically, Ce0.8Sm0.15Sr0.05O2 (CSSO) was synthesized by the EDTA-citrate complexing method and the resultant powders were characterized by XRD, SEM, and N2 adsorption-desorption measurements. The structure was identified as a fluorite phase, and the BET analysis showed specific areas of 25.6 and 2.6 m2/g for the samples heat-treated at 650 and 1000 °C, respectively. Dynamic thermogravimetric analyses performed under CO2, CO, CO-O2, and O2 containing atmospheres showed the thermal stability and reactivity of the ceria-based catalyst. Then, the CO oxidation tests were evaluated in two stages: first, the dynamic and isothermal analyses for the CO oxidation by the CSSO treated at 650 and 1000 °C; then, the evaluation of the CO oxidation properties of the proposed catalyst with in situ CO2 capture by adding CaO to the system. The results for the CSSO1000-CaO system evidenced simultaneous double process produced by the synergetic CO oxidation at temperatures between 350 and 650 °C and the CO2 chemisorption on the CaO. Furthermore, the combined materials reduce the different temperature processes probably due to the CaO partial catalytic activity.
Original languageAmerican English
Pages (from-to)6124-6130
Number of pages5510
JournalIndustrial and Engineering Chemistry Research
DOIs
StatePublished - 31 May 2017
Externally publishedYes

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Carbon Monoxide
Oxidation
Catalysts
Cerium compounds
Fluorspar
Ethylenediaminetetraacetic acid
Chemisorption
Catalyst activity
Desorption
Thermodynamic stability
Edetic Acid
Citric Acid
Powders
Adsorption
Temperature
Scanning electron microscopy

Cite this

@article{4702c048e79048a88c054751fdcdddda,
title = "Ce0.8Sm0.15Sr0.05O2 as Possible Oxidation Catalyst and Assessment of the CaO Addition in the Coupled CO Oxidation-CO2 Capture Process",
abstract = "{\circledC} 2017 American Chemical Society. A synergetic system for the coupled CO oxidation and CO2 trapping was proposed and studied in the present work by using a ceria-based material and CaO as catalyst and absorbent, respectively. Specifically, Ce0.8Sm0.15Sr0.05O2 (CSSO) was synthesized by the EDTA-citrate complexing method and the resultant powders were characterized by XRD, SEM, and N2 adsorption-desorption measurements. The structure was identified as a fluorite phase, and the BET analysis showed specific areas of 25.6 and 2.6 m2/g for the samples heat-treated at 650 and 1000 °C, respectively. Dynamic thermogravimetric analyses performed under CO2, CO, CO-O2, and O2 containing atmospheres showed the thermal stability and reactivity of the ceria-based catalyst. Then, the CO oxidation tests were evaluated in two stages: first, the dynamic and isothermal analyses for the CO oxidation by the CSSO treated at 650 and 1000 °C; then, the evaluation of the CO oxidation properties of the proposed catalyst with in situ CO2 capture by adding CaO to the system. The results for the CSSO1000-CaO system evidenced simultaneous double process produced by the synergetic CO oxidation at temperatures between 350 and 650 °C and the CO2 chemisorption on the CaO. Furthermore, the combined materials reduce the different temperature processes probably due to the CaO partial catalytic activity.",
author = "Oscar Ovalle-Encinia and Mendoza-Nieto, {J. Arturo} and Jos{\'e} Ortiz-Landeros and Heriberto Pfeiffer",
year = "2017",
month = "5",
day = "31",
doi = "10.1021/acs.iecr.6b04872",
language = "American English",
pages = "6124--6130",
journal = "Industrial and Engineering Chemistry Research",
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publisher = "American Chemical Society",

}

Ce<inf>0.8</inf>Sm<inf>0.15</inf>Sr<inf>0.05</inf>O<inf>2</inf> as Possible Oxidation Catalyst and Assessment of the CaO Addition in the Coupled CO Oxidation-CO<inf>2</inf> Capture Process. / Ovalle-Encinia, Oscar; Mendoza-Nieto, J. Arturo; Ortiz-Landeros, José; Pfeiffer, Heriberto.

In: Industrial and Engineering Chemistry Research, 31.05.2017, p. 6124-6130.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Ce0.8Sm0.15Sr0.05O2 as Possible Oxidation Catalyst and Assessment of the CaO Addition in the Coupled CO Oxidation-CO2 Capture Process

AU - Ovalle-Encinia, Oscar

AU - Mendoza-Nieto, J. Arturo

AU - Ortiz-Landeros, José

AU - Pfeiffer, Heriberto

PY - 2017/5/31

Y1 - 2017/5/31

N2 - © 2017 American Chemical Society. A synergetic system for the coupled CO oxidation and CO2 trapping was proposed and studied in the present work by using a ceria-based material and CaO as catalyst and absorbent, respectively. Specifically, Ce0.8Sm0.15Sr0.05O2 (CSSO) was synthesized by the EDTA-citrate complexing method and the resultant powders were characterized by XRD, SEM, and N2 adsorption-desorption measurements. The structure was identified as a fluorite phase, and the BET analysis showed specific areas of 25.6 and 2.6 m2/g for the samples heat-treated at 650 and 1000 °C, respectively. Dynamic thermogravimetric analyses performed under CO2, CO, CO-O2, and O2 containing atmospheres showed the thermal stability and reactivity of the ceria-based catalyst. Then, the CO oxidation tests were evaluated in two stages: first, the dynamic and isothermal analyses for the CO oxidation by the CSSO treated at 650 and 1000 °C; then, the evaluation of the CO oxidation properties of the proposed catalyst with in situ CO2 capture by adding CaO to the system. The results for the CSSO1000-CaO system evidenced simultaneous double process produced by the synergetic CO oxidation at temperatures between 350 and 650 °C and the CO2 chemisorption on the CaO. Furthermore, the combined materials reduce the different temperature processes probably due to the CaO partial catalytic activity.

AB - © 2017 American Chemical Society. A synergetic system for the coupled CO oxidation and CO2 trapping was proposed and studied in the present work by using a ceria-based material and CaO as catalyst and absorbent, respectively. Specifically, Ce0.8Sm0.15Sr0.05O2 (CSSO) was synthesized by the EDTA-citrate complexing method and the resultant powders were characterized by XRD, SEM, and N2 adsorption-desorption measurements. The structure was identified as a fluorite phase, and the BET analysis showed specific areas of 25.6 and 2.6 m2/g for the samples heat-treated at 650 and 1000 °C, respectively. Dynamic thermogravimetric analyses performed under CO2, CO, CO-O2, and O2 containing atmospheres showed the thermal stability and reactivity of the ceria-based catalyst. Then, the CO oxidation tests were evaluated in two stages: first, the dynamic and isothermal analyses for the CO oxidation by the CSSO treated at 650 and 1000 °C; then, the evaluation of the CO oxidation properties of the proposed catalyst with in situ CO2 capture by adding CaO to the system. The results for the CSSO1000-CaO system evidenced simultaneous double process produced by the synergetic CO oxidation at temperatures between 350 and 650 °C and the CO2 chemisorption on the CaO. Furthermore, the combined materials reduce the different temperature processes probably due to the CaO partial catalytic activity.

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