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Analysis of institutional authors

Martínez A.AuthorMartinez, ACorresponding Author

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Direct hydrogenation of CO2 to aromatics via Fischer-Tropsch route over tandem K-Fe/Al2O3+H-ZSM-5 catalysts: Influence of zeolite properties

Publicated to:Catalysis Today. 427 114404- - 2024-02-01 427(), DOI: 10.1016/j.cattod.2023.114404

Authors: Murciano, R; Serra, JM; Martínez, A

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Abstract

Direct hydrogenation of CO2 to valuable aromatics using multifunctional catalysts is an attractive technology to produce low-carbon footprint chemicals. In this work, the relevant zeolite parameters driving the formation of total and BTEX aromatics from CO2 and H2 on tandem K-Fe/gamma-Al2O3+H-ZSM-5 catalysts following the FischerTropsch (FT)-mediated route were investigated. To this end, a set of H-ZSM-5 zeolites covering a wide range of physicochemical properties (density of Br phi nsted and Lewis acid sites, external acidity, crystallite size, and mesoporosity) was used, characterized by different techniques (ICP-OES, XRD, N2 physisorption, FTIR-pyridine, FTIR-2,6,-di-tert-butyl pyridine, XPS, 27Al MAS NMR, and electron microscopy), and evaluated in CO2 hydrogenation at 400 degrees C, 30 bar, H2/CO2 = 3.1, and GHSV of 4700 mL/(gFe-cat.h). At these conditions, high and stable CO2 conversions of 50 - 55% and low CO selectivity of ca. 10% were obtained for the Fe-based and tandem catalysts. The density and, to a certain extent, the strength of Br phi nsted acid sites were found the main parameters determining the selectivity of aromatics, reaching initial (TOS = 1.5 h) values of about 79% and 40% in liquid (C5+) and total hydrocarbons, respectively, for the catalyst based on the most acidic zeolite. Lewis acid sites associated to extraframework Al species (EFAL), by contrast, did not appear to play a relevant role in our conditions. Moreover, although a positive effect of the total amount and strength of Br phi nsted acid sites on the selectivity to the most valuable BTEX aromatics was inferred from our results, the external Br phi nsted acidity was the most influential factor in this case. Hence, a remarkable BTEX selectivity of 75% in aromatics was achieved for the zeolite previously submitted to a surface-passivation treatment by silylation.

Keywords

AromaticAromaticsAromatizationBtexCarbon dioxideCarbon footprintCarbon-dioxideCatalyst selectivityCo2 hydrogenationCo<sub>2</sub> hydrogenationConversionCrystallite sizeEmission controlExternal acidityFischer tropschFischer-tropschH-zsm-5H-zsm-5 zeoliteHydrogenationIron compoundsLifePhysicochemical propertiesPyridineTandem catalystZeolitesZsm-5 catalystsZsm-5 zeolites]+ catalyst

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 60/178, thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemistry, Physical.

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 2025-06-06:

  • WoS: 2
  • Scopus: 8
  • OpenCitations: 5

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 2025-06-06:

  • 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: 41.
  • 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: 30 (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: 1.5.
  • The number of mentions on the social network X (formerly Twitter): 3 (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 (Murciano, R) and Last Author (Martinez Aparisi, Alberto).

the author responsible for correspondence tasks has been Martinez Aparisi, Alberto.