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Bifunctional Mechanism of CO2 Methanation on Pd-MgO/SiO2 Catalyst: Independent Roles of MgO and Pd on CO2 Methanation
Abstract
We scrutinized the reaction mechanism of CO 2 methanation catalyzed by a Pd-MgO/SiO 2 catalyst. Density functional theory studies showed that MgO and Pd nanoparticles play completely different roles. We found that MgO initiates the reaction by binding a CO 2 molecule, forming a magnesium carbonate species on the surface, and that a supply of atomic H is essential for further hydrogenation of magnesium carbonate to methane. A CO 2 temperature-programmed desorption study gives credence to our findings on the role of MgO. Our results confirm the bifunctional mechanism of CO 2 methanation by a Pd-MgO/SiO 2 catalyst.
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Cites
Biomimetic Hydrogen Evolution: MoS 2 Nanoparticles as Catalyst for Hydrogen Evolution
Hinnemann, B., Moses, P. G., Bonde, J., Jørgensen, K. P., Nielsen, J. H., Horch, S., Chorkendorff, I., & Nørskov, J. K. (2005) · Journal of the American Chemical Society · doi:10.1021/ja0504690 · Cited by 4,065
Carbon capture and storage: how green can black be
Haszeldine, R. S. (2009) · Science · doi:10.1126/science.1172246 · Cited by 2,021
Cited by
Recent advances in catalytic hydrogenation of carbon dioxide
Wang, W., Wang, S., Ma, X., & Gong, J. (2011) · Chemical Society Reviews · doi:10.1039/c1cs15008a · Cited by 3,316
Review on methanation – From fundamentals to current projects
Rönsch, S., Schneider, J., Matthischke, S., Schlüter, M., Götz, M., Lefebvre, J., Prabhakaran, P., & Bajohr, S. (2016) · Fuel · doi:10.1016/j.fuel.2015.10.111 · Cited by 1,452
Mechanism of CO2 Hydrogenation on Pd/Al2O3 Catalysts: Kinetics and Transient DRIFTS-MS Studies
Wang, X., Shi, H., Kwak, J. H., & Szanyi, J. (2015) · ACS Catalysis · doi:10.1021/acscatal.5b01464 · Cited by 522
Aldana, P. A. U., Ocampo, F., Kobl, K., Louis, B., Thibault-Starzyk, F., Daturi, M., Bazin, P., Thomas, S., & Roger, A. C. (2013) · Catalysis Today · doi:10.1016/j.cattod.2013.02.019 · Cited by 512
Lewis Acido-Basic Interactions between CO 2 and MgO Surface: DFT and DRIFT Approaches
Cornu, D., Guesmi, H., Krafft, J.-M., & Lauron-Pernot, H. (2012) · The Journal of Physical Chemistry C · doi:10.1021/jp211171t · Cited by 203
Metadata
- Authors
- Kim, H. Y., Lee, H. M., & Park, J.-N.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-03-26
- Volume
- 114
- Issue
- 15
- Pages
- 7128-7131
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2041771687
- Cited by
- 186
- References
- 2
- FWCI
- 2.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kim, H. Y., Lee, H. M., & Park, J.-N. (2010). Bifunctional Mechanism of CO2 Methanation on Pd-MgO/SiO2 Catalyst: Independent Roles of MgO and Pd on CO2 Methanation. The Journal of Physical Chemistry C. https://doi.org/10.1021/jp100938v
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