2024-03-29T08:48:57Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/55392021-11-02T12:01:16Zcom_10259_4323com_10259_5086com_10259_2604col_10259_4330
Amica, Guillermina
4dcb9fcc-5db2-4f29-ae30-991de000ee75
500
Rozas Azcona, Sara
f58f488c-8fa1-434e-84f2-6bb5dc9d247c
500
Aparicio Martínez, Santiago
30
500
Gennari, Fabiana C.
55015863-11d7-4f6e-91b3-192acdc88c9a
500
2020-11-03T09:57:04Z
2020-11-03T09:57:04Z
2020-07
1463-9076
http://hdl.handle.net/10259/5539
10.1039/D0CP01958E
1463-9084
The feasibility of the reduction of CO2 to CH4 employing MgH2 in the presence and absence of cobalt as a catalyst was investigated for the first time, exploring different non-independent reaction conditions such as the grade of microstructural refinement, the molar ratio MgH2 : CO2, reaction time and temperature. For the un-catalyzed process a methane yield of 44.6% was obtained after 24 h of thermal treatment at 400 °C employing a molar ratio of 2 : 1, through a methanation mechanism that involves the direct reduction of CO2 and the generation of CH4via C as an intermediary. For the MgH2 catalyzed process a methane yield of 78% was achieved by heating at 350 °C for 48 h, 4 : 1 being the optimal molar ratio. The global mechanism corresponds to a Sabatier process favored by Co as an active catalyst, together with the reverse water gas shift reaction followed by methanation of CO in the presence of steam. On account of the fact that it was proved that the use of the catalyst allows lowering the operational temperature without collapsing the methane yield, this research provides interesting insight into a thermochemical method for CO2 reduction to CH4 employing a solid hydrogen storage medium as an H2 source.
The present work is part of the CO2MPRISE, ‘‘CO2 absorbing Materials Project-RISE’’, a project that has received funding from the European Union’s Horizon 2020 research and innovation programme, under the Marie Skłodowska-Curie Grant Agreement No. 734873. The work was also supported by CONICET (Consejo Nacional de Investigaciones Cientı´ficas y Te´cnicas), ANPCyT-(Agencia Nacional de Promocio´n Cientı´fica y Tecnolo´gica) and CNEA (Comisio´n Nacional de Energı´a Ato´mica)
application/pdf
eng
Royal Society of Chemistry
Physical Chemistry Chemical Physics. 2020, V. 22, n. 26, p. 14720-14730
https://doi.org/10.1039/D0CP01958E
info:eu-repo/grantAgreement/EC/H2020/734873
Química física
Chemistry, Physical and theoretical
Catalysis effect on CO2 methanation using MgH2 as a portable hydrogen medium
info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
info:eu-repo/semantics/openAccess
Physical Chemistry Chemical Physics
22
26
14720
14730
ORIGINAL
Amica-pccp_2020.pdf
Amica-pccp_2020.pdf
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2942941
https://riubu.ubu.es/bitstream/10259/5539/1/Amica-pccp_2020.pdf
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MD5
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LICENSE
license.txt
license.txt
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https://riubu.ubu.es/bitstream/10259/5539/2/license.txt
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THUMBNAIL
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Amica-pccp_2020.pdf.txt
Amica-pccp_2020.pdf.txt
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https://riubu.ubu.es/bitstream/10259/5539/4/Amica-pccp_2020.pdf.txt
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10259/5539
oai:riubu.ubu.es:10259/5539
2021-11-02 13:01:16.442
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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