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Development of an Ir/TiO2 catalytic coating for plasma assisted hydrogenation of CO2 to CH4
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Gregory, Joseph W., Pourali, Nima, Gong, Yuyan, Walton, Richard I., Hessel, Volker and Rebrov, Evgeny V. (2024) Development of an Ir/TiO2 catalytic coating for plasma assisted hydrogenation of CO2 to CH4. Applied Catalysis A: General, 675 . 119639. doi:10.1016/j.apcata.2024.119639 ISSN 0926-860X.
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Official URL: http://dx.doi.org/10.1016/j.apcata.2024.119639
Abstract
The hydrogenation of CO2 to methane over a 20 wt% Ir/TiO2 catalytic coating has been investigated in a tubular dielectric barrier discharge (DBD) reactor. The 1.2 µm Ir/TiO2 coating was deposited onto the inner wall of a quartz tube by a combustion-evaporation method from a mixture containing a Ti precursor and a colloidal suspension of Ir nanoparticles (2 nm). The catalyst was characterised by XRD, SEM, TEM/EDS and CO chemisorption. The Ir(0) state in the as-synthesised film was confirmed by XPS. The CH4 conversion increased by 1.5 times, as compared to an empty tube. A maximum CO2 conversion rate of 2.1 μmol s−1 was achieved at a fuel production efficiency of 3.5%. Surface reactions onto the catalyst surface are responsible for enhancement of reaction rate. The results presented in this work open up new possibilities in plasma-catalysis, whereby efficient reactions can be carried out over small volumes of catalyst.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Engineering > Engineering |
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Library of Congress Subject Headings (LCSH): | Hydrogenation, Coatings, Combustion, Evaporation | |||||||||
Journal or Publication Title: | Applied Catalysis A: General | |||||||||
Publisher: | Elsevier BV | |||||||||
ISSN: | 0926-860X | |||||||||
Official Date: | 5 April 2024 | |||||||||
Dates: |
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Volume: | 675 | |||||||||
Article Number: | 119639 | |||||||||
DOI: | 10.1016/j.apcata.2024.119639 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 1 March 2024 | |||||||||
Date of first compliant Open Access: | 4 March 2024 | |||||||||
RIOXX Funder/Project Grant: |
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