Journal article 974 views
Thermally stable Pt/Ti mesh catalyst for catalytic hydrogen combustion
,
A. Falch,
P.T. Sekoai,
C. Mota das Neves Quaresma,
D.G. Bessarabov,
Charlie Dunnill
International Journal of Hydrogen Energy, Volume: 45, Issue: 33, Pages: 16851 - 16864
Swansea University Authors:
Stephanus Du Preez, Daniel Jones, Michael Warwick , Charlie Dunnill
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1016/j.ijhydene.2020.04.112
Abstract
In this study, platinum (Pt) supported on titanium (Ti) mesh catalysts for catalytic hydrogen combustion were prepared by depositing Pt as a thin-layer on metallic or calcined Ti mesh. The Pt thin-layer could be stabilized as uniformly distributed, near nano-sized particles on the surface of calcine...
| Published in: | International Journal of Hydrogen Energy |
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| ISSN: | 0360-3199 |
| Published: |
Elsevier BV
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa54293 |
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| Abstract: |
In this study, platinum (Pt) supported on titanium (Ti) mesh catalysts for catalytic hydrogen combustion were prepared by depositing Pt as a thin-layer on metallic or calcined Ti mesh. The Pt thin-layer could be stabilized as uniformly distributed, near nano-sized particles on the surface of calcined Ti mesh by exposing the freshly sputtered Pt to hydrogen. Temperatures between 478 and 525 °C were reached during hydrogen combustion and could be maintained at a hydrogen flow rate of 0.4 normal liter (Nl)/min for several hrs. It was determined that Ti mesh calcination at ≥900 °C formed an oxide layer on the surface of Ti wires, which prevented significant Pt aggregation. X-ray photoelectron spectroscopy revealed that the surface of Ti mesh was fully converted to TiO2 at ≥900 °C. Raman spectroscopy showed that the majority of TiO2 was present in the rutile phase, with some minor contribution from anatase-TiO2. The calcined Ti support was stable through all investigations and did not indicate any signs of degradation. |
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| Keywords: |
Catalytic hydrogen combustion, Platinum, Thin-layer deposition, Titanium oxides, Thermal energy |
| College: |
Faculty of Science and Engineering |
| Issue: |
33 |
| Start Page: |
16851 |
| End Page: |
16864 |