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Analysis of institutional authors

Martínez-Ortigosa, JAuthorPalomares, AeAuthor

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October 30, 2024
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AgY zeolite as catalyst for the selective catalytic oxidation of NH3

Publicated to:Microporous And Mesoporous Materials. 323 111230- - 2021-08-01 323(), DOI: 10.1016/j.micromeso.2021.111230

Authors: Martinez-Ortigosa, Joaquin; Lopes, Christian W; Agostini, Giovanni; Palomares, A Eduardo; Blasco, Teresa; Rey, Fernando

Affiliations

ALBA Synchrotron Light Source, Crta BP 1413,Km 3-3 - Author
Univ Fed Rio Grande do Sul UFRGS, Inst Chem, Av Bento Goncalves 9500,POB 15003, BR-91501970 Porto Alegre - Author
Univ Politecn Valencia, Inst Tecnol Quim, Consejo Super Invest Cient UPV CSIC, Avda Naranjos S-N - Author

Abstract

Ag-exchanged Y zeolites (Si/Al = 2.5; Ag/Al = 0.30-0.95) have been tested in the NH3-SCO reaction, the most promising method for the elimination of ammonia emissions, and deeply characterized before and after reaction by using a variety of techniques (XRD, TEM, UV-Vis, Ag-109 NMR, XAS spectroscopies). The most active centres for the NH3-SCO reaction are Ag-0 nanoparticles (NPs) formed under reduction conditions and both activity and selectivity to N-2 increase with the silver loading. The Ag-0 NPs are dramatically modified under reaction conditions, being most of them dispersed resulting in small clusters and even atomically Ag+ cations, the latter accounting for around half silver atoms. The presence of water into the reaction feed promotes the dispersion and oxidation of silver nanoparticles, but the catalyst performance is only slightly affected. The results are fully consistent with the previously proposed i-SCR mechanism for NH3-SCO reaction on silver catalysts.

Keywords

109ag solid-state nmr<sup>109</sup>ag solid-state nmrAg$++$Ag-109 nmrAg-109 solid-state nmrAg-containing zeoliteAg-containing zeolitesAg/al2o3 catalystAmmoniaAmmonia emissionsAmmonia oxidationBinary alloysCatalystsCatalytic oxidationExchanged zeolitesIn situ xasIn-situ xasMetal nanoparticlesNh$-3$NoxNuclear magnetic resonance spectroscopyParticle-sizeReductionSelective ammonia oxidationSelective catalytic oxidationSilver clustersSilver nanoparticlesSupported pd nanoparticlesSurface-areaY zeolitesZeolitesZeolites as catalysts

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Microporous And Mesoporous Materials 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, 2021, it was in position 15/73, thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemistry, Applied.

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: 3.3, 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 Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-09, the following number of citations:

  • WoS: 17
  • Scopus: 17

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 2025-07-09:

  • 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: 1.25.
  • The number of mentions on the social network X (formerly Twitter): 2 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Brazil.

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 (Martinez Ortigosa, Joaquín) and Last Author (Rey, F).

the author responsible for correspondence tasks has been Blasco, T.