AuCu/TiO2 Catalysts prepared using electron beam irradiation for the preferential oxidation of carbon monoxide in hydrogen-rich mixtures Article Swipe
Catarine Santos Lopes Alencar
,
Ana Rita Noborikawa Paiva
,
E.S.R. Somessari
,
Leonardo Gondim de Andrade e Silva
,
Jorge Moreira Vaz
,
Estevam V. Spinacé
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.15392/bjrs.v9i1a.1497
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.15392/bjrs.v9i1a.1497
The major part of the world production of hydrogen (H2) is originated from a combination of methane steam reforming and water-gas shift reaction resulting in an H2-rich mixture known as reformate gas, which contains about 1% vol (10,000 ppm) of carbon monoxide (CO). The preferential oxidation reaction of CO in H2-rich mixtures (CO-PROX) has been considered a very promising process for H2 purification, reducing CO for values below 50 ppm allowing its use in PEMFC Fuel Cells. Au nanoparticles supported on TiO2 (Au/TiO2) catalysts have been shown good activity and selectivity for CO-PROX reaction in the temperature range between 20-80 ºC; however, the catalytic activity strongly depends on the preparation method. Also, the addition of Cu to the Au/TiO2 catalyst could increase the activity and selectivity for CO-PROX reaction. In this work, AuCu/TiO2 catalysts with composition 0.5%Au0.5%Cu/TiO2 were prepared in a single step using electron beam irradiation, where the Au3+ and Cu2+ ions were dissolved in water/2-propanol solution, the TiO2 support was dispersed and the obtained mixture was irradiated under stirring at room temperature using different dose rates (8 – 64 kGy s-1) and total doses (144 – 576 kGy). The catalysts were characterized by energy dispersive X-ray analysis, X-ray diffraction transmission electron microscopy, temperature-programmed reduction and tested for CO-PROX reaction. The best result was obtained with a catalyst prepared with a dose rate of 64 kGy s-1 and a total dose of 576 kGy showed a CO conversion of 45% and a CO2 selectivity of 30% at 150 oC.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.15392/bjrs.v9i1a.1497
- https://www.bjrs.org.br/revista/index.php/REVISTA/article/download/1497/792
- OA Status
- diamond
- References
- 16
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3003861084
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3003861084Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.15392/bjrs.v9i1a.1497Digital Object Identifier
- Title
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AuCu/TiO2 Catalysts prepared using electron beam irradiation for the preferential oxidation of carbon monoxide in hydrogen-rich mixturesWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2021Year of publication
- Publication date
-
2021-04-30Full publication date if available
- Authors
-
Catarine Santos Lopes Alencar, Ana Rita Noborikawa Paiva, E.S.R. Somessari, Leonardo Gondim de Andrade e Silva, Jorge Moreira Vaz, Estevam V. SpinacéList of authors in order
- Landing page
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https://doi.org/10.15392/bjrs.v9i1a.1497Publisher landing page
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https://www.bjrs.org.br/revista/index.php/REVISTA/article/download/1497/792Direct link to full text PDF
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YesWhether a free full text is available
- OA status
-
diamondOpen access status per OpenAlex
- OA URL
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https://www.bjrs.org.br/revista/index.php/REVISTA/article/download/1497/792Direct OA link when available
- Concepts
-
Catalysis, Carbon monoxide, PROX, Water-gas shift reaction, Chemistry, Hydrogen, Inorganic chemistry, Selectivity, Catalytic reforming, Steam reforming, Nuclear chemistry, Hydrogen production, Organic chemistryTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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16Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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