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dc.contributor.author | García-Baldoví, Alberto | es_ES |
dc.contributor.author | Peng, Lu | es_ES |
dc.contributor.author | Dhakshinamoorthy, Amarajothi | es_ES |
dc.contributor.author | Asiri, Abdullah M. | es_ES |
dc.contributor.author | Primo Arnau, Ana Maria | es_ES |
dc.contributor.author | García Gómez, Hermenegildo | es_ES |
dc.date.accessioned | 2024-04-23T18:06:15Z | |
dc.date.available | 2024-04-23T18:06:15Z | |
dc.date.issued | 2023-04 | es_ES |
dc.identifier.issn | 1566-7367 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/203702 | |
dc.description.abstract | [EN] Ni nanoparticles (approximate to 8 nm) have been prepared at about 15 wt% loading strongly grafted on N-doped graphitic carbon matrix [Ni@(N)C] by pyrolysis of Ni(OAc)2 adsorbed on chitosan. Ni@(N)C was used as catalyst for H2 storage/release on N-ethylcarbazole (EC). Ni@(N)C exhibits higher H2 storage capacity than analogous Ni nanoparticles (NPs) supported on silica. The addition of minute amounts (18 ppm) of Pt increases significantly the H2 storage/release activity of Ni@(N)C due to effect of Pt promoting H spill over the Ni NPs. There is no linear correlation between Pt concentration and hydrogenation/dehydrogenation activity of Ni@(N)C, the lowest Pt loading (18 ppm) resulting in the most efficient Pt/Ni@(N)C for hydrogenation-dehydrogenation of EC. This fact was attributed to the presence of small Pt clusters or single atoms, while higher concentration would correspond to a less-efficient larger cluster regime. The most efficient Pt/Ni@(N)C-18 catalyst was used for four consecutive hydrogenation/dehydrogenation cycles, exhibiting some fatigue in the H2 storage/release of the same EC batch that was attributed to the increase in the product mixture complexity upon cycling, with the formation of some intermediates that undergo more difficult hydrogenation/dehydrogenation reaction as well as partial catalyst deactivation. After four cycles, (Pt)Ni@(N)C exhibits in the fifth use a H2 storage capacity of 5.2 wt%, somewhat lower than the 5.8 wt% H2 capacity of the fresh sample, while no changes in the XRD, TEM and XPS characterization of the five-times used catalyst compared to the fresh material is observed. | es_ES |
dc.description.sponsorship | Financial support by the Spanish Ministry of Science and Innovation (Severo Ochoa Center of Excellence CEX2021-001230-S and PDI2021- 12607108-C21, both funded by MCIN/AEI/10.13039/501100011033) and Generalitat Valenciana (Prometeo 2021-38 and MFA/2022/023) is gratefully acknowledged. A.D. thanks the Spanish Ministry of Science and Education for a Maria Zambrano contract. L.P. was the recipient of a Grisolia fellowship. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Catalysis Communications | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Heterogeneous catalysis | es_ES |
dc.subject | Liquid organic hydrogen carriers | es_ES |
dc.subject | Hydrogen spillover | es_ES |
dc.subject | N-doped graphene as support | es_ES |
dc.subject | Promotional Pt effect | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.title | Positive influence of minute Pt addition on the activity of Ni supported on defective graphene for hydrogenation/dehydrogenation of N-ethylcarbazole as liquid organic carrier | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.catcom.2023.106641 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126071OB-C21/ES/APLICANDO MXENOS COMO CATALIZADORES DEFINITIVOS PARA LA PRODUCCION DE COMBUSTIBLES SOLARES/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GENERALITAT VALENCIANA//PROMETEO%2F2021%2F038//HETEROGENEOUS (ELECTRO-/PHOTO-)CATALYSTS FOR HYDROGEN TECHNOLOGY Cat4Hytec/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GV INNOV.UNI.CIENCIA//MFA%2F2022%2F023//ELECTRODOS Y FOTOCATALIZADORES A BASE DE GRAFENO/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AGENCIA ESTATAL DE INVESTIGACION//CEX2021-001230-S//CENTRO DE EXCELENCIA SEVERO OCHO INSTITUTO DE TECNOLOGIA QUIMICA (ITQ)/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials | es_ES |
dc.description.bibliographicCitation | García-Baldoví, A.; Peng, L.; Dhakshinamoorthy, A.; Asiri, AM.; Primo Arnau, AM.; García Gómez, H. (2023). Positive influence of minute Pt addition on the activity of Ni supported on defective graphene for hydrogenation/dehydrogenation of N-ethylcarbazole as liquid organic carrier. Catalysis Communications. 177. https://doi.org/10.1016/j.catcom.2023.106641 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.catcom.2023.106641 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 177 | es_ES |
dc.relation.pasarela | S\512414 | es_ES |
dc.contributor.funder | GENERALITAT VALENCIANA | es_ES |
dc.contributor.funder | AGENCIA ESTATAL DE INVESTIGACION | es_ES |