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This work was supported by the Grants PID2021-125427OB-I00 and TED2021-130312B-I00 funded by MICIN/AEI/10.13039/501100011033 and by "ERDF A way of making Europe", and by the Grant EIN2020-112153 funded by MCIN/AEI/10.13039/501100011033 and by "European Union NextGenerationEU/PRTR". G. Vega acknowledges the Universidad Autonoma de Madrid for the Predoctoral contract. M. Navarro acknowledges the Community of Madrid for her contract under the "Programa Investigo".

Analysis of institutional authors

Vega, GonzaloCorresponding AuthorCasas, Jose AAuthorQuintanilla, AsunciónAuthor

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Article

3D-printed palladium/activated carbon-based catalysts for the dehydrogenation of formic acid as a hydrogen carrier

Publicated to:Journal of Materials Chemistry A. 11 (44): 24321-24329 - 2023-10-20 11(44), DOI: 10.1039/d3ta05644a

Authors: Díaz-Herrezuelo, I.; Vega, G.; Navarro, M.; Miranzo, P.; Osendi, M.I.; Casas, J.A.; Quintanilla, A.; Belmonte, M.

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Abstract

The development of structured catalyst supports to promote chemical process intensification is of great interest, and porous activated carbon (AC) is an excellent material to overcome this challenge. In addition, the current increasing hydrogen demand and its limitations in terms of transportation and storage require the development of novel approaches for the application of hydrogen. In this study, highly porous and robust 3D-printed patterned AC-based architectures were additive manufactured using the direct ink writing technology. Different AC inks containing a boehmite gel with no organic additives were rheologically characterized to select the most suitable ink for building AC supports, which were thermally treated to promote solid-solid contacts and increase their robustness (strength of similar to 0.5 MPa) while maintaining a high porosity (86%). Subsequently, the AC supports were impregnated with a 5 wt% palladium (Pd) precursor to develop a 3D Pd/AC catalyst, which could generate hydrogen via the dehydrogenation of formic acid (FA), a very promising liquid organic hydrogen carrier, in a fixed-bed reactor. These 3D catalysts produced CO-free hydrogen from FA under ambient conditions with an FA conversion of 81% and hydrogen flow rate of 6 mL min-1. Furthermore, the long-term experiments in continuous mode operation showcased their good catalytic stability and recyclability. These results demonstrate that 3D Pd/AC catalysts exhibit a great potential to develop a new technology using FA as hydrogen carrier.3D Pd/AC catalysts are prepared via wet impregnation using a Pd precursor and a highly porous and robust 3D-printed cellular AC support. These 3D catalysts produced CO-free hydrogen from FA under ambient conditions.

Keywords

Astronomia / físicaBiodiversidadeBiotecnologíaChemistry (all)Chemistry (miscellaneous)Chemistry, physicalCiências agrárias iCiências biológicas iCiências biológicas iiEnergy & fuelsEngenharias iiEngenharias ivFarmaciaGeneral chemistryGeneral materials scienceInterdisciplinarMateriaisMaterials chemistryMaterials scienceMaterials science (all)Materials science (miscellaneous)Materials science, multidisciplinaryMedicina iOdontologíaQuímicaRenewable energy, sustainability and the environment

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal of Materials Chemistry A due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position 16/171, thus managing to position itself as a Q1 (Primer Cuartil), in the category Energy & Fuels. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.11, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-28, the following number of citations:

  • Scopus: 5
  • Open Alex: 3
  • OpenCitations: 3

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-28:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 11.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 11 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 24.

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/712564

Leadership analysis of institutional authors

the author responsible for correspondence tasks has been VEGA MARCILLA, GONZALO.