Mostrar el registro sencillo del ítem
Photocatalytic production of hydrogen from binary mixtures of C-3 alcohols on Pt/TiO2: Influence of alcohol structure
dc.contributor.author | López Tenllado, Francisco Javier | |
dc.contributor.author | Hidalgo-Carrillo, J. | |
dc.contributor.author | Montes Jiménez, Vicente | |
dc.contributor.author | Sánchez-López, F.J. | |
dc.contributor.author | Urbano, Francisco José | |
dc.contributor.author | Marinas, Alberto | |
dc.date.accessioned | 2024-01-31T07:53:42Z | |
dc.date.available | 2024-01-31T07:53:42Z | |
dc.date.issued | 2019 | |
dc.identifier.uri | http://hdl.handle.net/10396/26856 | |
dc.description.abstract | The effect of alcohol structure on photocatalytic production of H2 from C-3 alcohols was studied on 0.5% Pt/TiO2. A C-2 alcohol (ethanol) was also included for comparative purposes. For individual reactions from 10% v/v aqueous solutions of alcohols, hydrogen production followed the order ethanol ≈ propan-2-ol > propan-1-ol > propane-1,2,3-triol > propane-1,2-diol > propane-1,3-diol. The process was found to be quite sensitive to the presence of additional alcohols in the reaction medium, as evidenced by competitive reactions. Therefore, propan-2-ol conversion was retarded in the presence of traces of the other alcohols, this effect being particularly significant for vicinal diols. Additional experiments showed that adsorption of alcohols on Pt/TiO2 followed the order propane-1,2,3-triol > propane-1,2-diol > propane-1,3-diol > propan-1-ol > ethanol > propan-2-ol. Adsorption studies (DRIFT) and monitoring of reaction products showed that the main photocatalyzed process for propan-2-ol and propan-1-ol transformation is dehydrogenation to the corresponding carbonyl compound (especially for propan-2-ol both in the liquid and the gas phase). In the case of liquid-phase transformation of propan-1-ol, ethane was also detected which is indicative of the dissociative mechanism to lead to the corresponding C-1 alkane. All in all, competitive reactions proved to be very useful for mechanistic studies. | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0/ | es_ES |
dc.source | Catalysis Today, 328, 2-7 (2019) | es_ES |
dc.subject | Hydrogen photocatalytic production | es_ES |
dc.subject | Photoreforming | es_ES |
dc.subject | Dehydrogenation | es_ES |
dc.subject | Pt/TiO2 | es_ES |
dc.subject | Competitive reactions of alcohols | es_ES |
dc.title | Photocatalytic production of hydrogen from binary mixtures of C-3 alcohols on Pt/TiO2: Influence of alcohol structure | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.cattod.2018.10.001 | es_ES |
dc.relation.projectID | Gobierno de España. MINECO. ENE2016-81013-R (AEI/FEDER, EU) | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |