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Analysis of institutional authors

Garcia-Rojas, EAuthorTapiador, JAuthorLeo, PAuthorMartos, CCorresponding AuthorOrcajo, GAuthor

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September 12, 2025
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Catalytical advantages of Hf-MOFs in benzaldehyde acetalization

Publicated to: Catalysis Today. 434 114705- - 2024-05-15 434(), DOI: 10.1016/j.cattod.2024.114705

Authors: García-Rojas, E; Tapiador, J; Leo, P; Palomino, C; Martos, C; Orcajo, G

Affiliations

Rey Juan Carlos Univ, Chem & Environm Engn Grp, ESCET, C Tulipan S-N - Author
Univ Balearic Isl, Dept Chem - Author

Abstract

The potential use of acetals as bioadditives based on sustainable feedstocks in the automotive industry is of great interest. If such feedstock is a residual stream, the process would represent a dual environmental challenge, such as the valorization of glycerol obtained as a by-product of biodiesel to produce acetals. There are just scarce works about this synthetic route due to the challenge in finding efficient catalytic converters for glycerol valorization in a single process. Herein four different Metal-Organic Frameworks (MOFs) are evaluated as heterogeneous catalysts for the acetalization reaction of benzaldehyde with methanol, specifically, two structures, MOF-808 and UiO-66, containing two structural metal ions, zirconium and hafnium. The aim of this work is to investigate the influence of the MOF structure, the metallic active sites and the reaction conditions on the catalytic performance of this acetal production-type reaction. Furthermore, the recyclability of the catalyst is evaluated, and a potential reaction mechanism is suggested. As relevant results, Hf-MOFs showed higher benzaldehyde conversion than Zr-based ones, and significant improvements in reaction conditions were achieved, such as a significant reduction in catalyst loading of 99.6 % using UiO-66-Hf, and an optimization of reagent ratios reducing methanol consumption by 50 % for a 92 % of benzaldehyde conversion. The Br & oslash;nsted character of UiO-66-Hf seems to enhance the reaction rate more than the metal center accessibility and larger pore volumes offered by MOF-808.

Keywords

AcetaldehydeAcetalizationAcetalsAcid siteAcid sitesAutomotive industryBenzaldehydeBio-additivesBronsted acidityCatalystCatalystsEfficientFeedstocksGlycerolHafniumLewis acidityMetal -organic frameworksMetal ionsMetal-organic framework-808Metal-organic frameworksMetalorganic frameworks (mofs)MethanolModulated hydrothermal synthesisMof-808OrganometallicsReaction conditionsUio-66Valorisation

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Catalysis Today 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, 2024 there are still no calculated indicators, but in 2023, it was in position 16/75, thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemistry, Applied.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-12-05:

  • WoS: 3
  • Scopus: 2

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 2025-12-05:

  • 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: 13.
  • 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: 1.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).

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.

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (García Rojas, Elena) and Last Author (Orcajo Rincón, Maria Gisela).

the author responsible for correspondence tasks has been Martos Sánchez, María Carmen.