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Title: Alkaline zirconates as effective materials for hydrogen production through consecutive carbon dioxide capture and conversion in methane dry reforming

Abstract

In this work, H 2 production was evaluated using different carbonation conditions and two alkaline zirconates. For this purpose, Li 2ZrO 3 and Na 2ZrO 3 were synthesized, characterized and tested on a consecutive process composed of initial CO 2 capture, followed by methane dry reforming (MDR). Thermogravimetric results showed that under the four gas mixtures tested (diluted and saturated CO 2, CO and CO-O 2), both ceramics are able to chemisorb CO 2, with Na2ZrO3 having the highest capture with saturated CO 2. In catalytic tests, ceramics carbonated with saturated CO 2 or CO-O 2 gas flows were able to act as sorbents and catalysts, producing H 2 at T > 750 °C through the partial oxidation of methane. This reaction was produced because CO2 desorption did not occur, thus avoiding the MDR process. On the other hand, carbonated ceramics under a CO-O2 gas mixture presented an outstanding catalytic performance. Between 450 and 750 °C, H 2 was formed through the MDR process promoted by CO 2 desorption from both ceramics. This result is in line with CO 2 desorption results, where a weaker CO 2–solid interaction was observed in comparison with saturated CO 22. Afterward, both ceramics presentedmore » a similar catalytic behavior, good regeneration and cyclability after the double process proposed (CO 2 capture-MDR reaction). Lithium zirconate also presented high thermal stability during cycle tests; meanwhile, sodium zirconate showed an important H 2 production increase as a function of cycles. Finally, both materials are feasible options for producing a clean energy source in a moderate temperature range through the catalytic conversion of two greenhouse gases (CO 2 and CH 4).« less

Authors:
ORCiD logo; ORCiD logo;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
Sponsoring Org.:
USDOE
OSTI Identifier:
1467023
Report Number(s):
NETL-PUB-21952
Journal ID: ISSN 0926-3373; PII: S0926337318306830
DOE Contract Number:  
251801; IN-101916
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Catalysis. B, Environmental; Journal Volume: 238; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; Dry CH4 reforming; CO2 chemisorption; Lithium zirconate; Sodium zirconate; CO oxidation, ab initio thermodynamics

Citation Formats

Mendoza-Nieto, J. Arturo, Duan, Yuhua, and Pfeiffer, Heriberto. Alkaline zirconates as effective materials for hydrogen production through consecutive carbon dioxide capture and conversion in methane dry reforming. United States: N. p., 2018. Web. doi:10.1016/j.apcatb.2018.07.065.
Mendoza-Nieto, J. Arturo, Duan, Yuhua, & Pfeiffer, Heriberto. Alkaline zirconates as effective materials for hydrogen production through consecutive carbon dioxide capture and conversion in methane dry reforming. United States. doi:10.1016/j.apcatb.2018.07.065.
Mendoza-Nieto, J. Arturo, Duan, Yuhua, and Pfeiffer, Heriberto. Sat . "Alkaline zirconates as effective materials for hydrogen production through consecutive carbon dioxide capture and conversion in methane dry reforming". United States. doi:10.1016/j.apcatb.2018.07.065. https://www.osti.gov/servlets/purl/1467023.
@article{osti_1467023,
title = {Alkaline zirconates as effective materials for hydrogen production through consecutive carbon dioxide capture and conversion in methane dry reforming},
author = {Mendoza-Nieto, J. Arturo and Duan, Yuhua and Pfeiffer, Heriberto},
abstractNote = {In this work, H2 production was evaluated using different carbonation conditions and two alkaline zirconates. For this purpose, Li2ZrO3 and Na2ZrO3 were synthesized, characterized and tested on a consecutive process composed of initial CO2 capture, followed by methane dry reforming (MDR). Thermogravimetric results showed that under the four gas mixtures tested (diluted and saturated CO2, CO and CO-O2), both ceramics are able to chemisorb CO2, with Na2ZrO3 having the highest capture with saturated CO2. In catalytic tests, ceramics carbonated with saturated CO2 or CO-O2 gas flows were able to act as sorbents and catalysts, producing H2 at T > 750 °C through the partial oxidation of methane. This reaction was produced because CO2 desorption did not occur, thus avoiding the MDR process. On the other hand, carbonated ceramics under a CO-O2 gas mixture presented an outstanding catalytic performance. Between 450 and 750 °C, H2 was formed through the MDR process promoted by CO2 desorption from both ceramics. This result is in line with CO2 desorption results, where a weaker CO2–solid interaction was observed in comparison with saturated CO22. Afterward, both ceramics presented a similar catalytic behavior, good regeneration and cyclability after the double process proposed (CO2 capture-MDR reaction). Lithium zirconate also presented high thermal stability during cycle tests; meanwhile, sodium zirconate showed an important H2 production increase as a function of cycles. Finally, both materials are feasible options for producing a clean energy source in a moderate temperature range through the catalytic conversion of two greenhouse gases (CO2 and CH4).},
doi = {10.1016/j.apcatb.2018.07.065},
journal = {Applied Catalysis. B, Environmental},
number = C,
volume = 238,
place = {United States},
year = {Sat Dec 01 00:00:00 EST 2018},
month = {Sat Dec 01 00:00:00 EST 2018}
}