Insights into CO oxidation on Au/TiO2-HMor zeolite catalysts at low temperature
The effect of combining TiO 2 and mordenite zeolite (HMOR), employed as support of gold nanoparticles, on the CO oxidation reaction at low temperature is studied. The amount of TiO 2 encapsulated into HMOR was varied and the catalyst efficiency was investigated. The deposition-precipitation with ure...
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Published in | Frontiers in nanotechnology Vol. 6 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
29.02.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The effect of combining TiO
2
and mordenite zeolite (HMOR), employed as support of gold nanoparticles, on the CO oxidation reaction at low temperature is studied. The amount of TiO
2
encapsulated into HMOR was varied and the catalyst efficiency was investigated. The deposition-precipitation with urea (DPU) method was used to deposit gold nanoparticles; likewise, the synthesis of monometallic catalysts based on TiO
2
and HMOR is reported. The synthesized materials were characterized by X-ray diffraction (XRD), nitrogen adsorption, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The addition of TiO
2
influenced the properties of the TiO
2
-HMOR composite, and its catalytic performance in the CO oxidation from 20°C. It was established that the 5Au/(28)TiO
2
-HMOR composite was the most active catalyst at lower temperatures, which was ascribed to the close contact among the components of the TiO
2
-HMOR composite, gold dispersion, gold and TiO
2
loadings, and Au and Ti species present in the catalysts. |
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ISSN: | 2673-3013 2673-3013 |
DOI: | 10.3389/fnano.2024.1359629 |