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Analysis of institutional authors

Fernandez, AbAuthorCorma, AAuthor

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October 29, 2024
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Study of the Beckmann rearrangement of acetophenone oxime over porous solids by means of solid state NMR spectroscopy

Publicated to: Physical Chemistry Chemical Physics. 11 (25): 5134-5141 - 2009-01-01 11(25), DOI: 10.1039/b816276j

Authors:

Belen Fernandez, Ana; Lezcano-Gonzalez, Ines; Boronat, Mercedes; Blasco, Teresa; Corma, Avelino
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Affiliations

UPV CSIC, Inst Tecnol Quim - Author

Abstract

The Beckmann rearrangement of acetophenone oxime using zeolite H-beta and silicalite-N as catalysts has been investigated by means of N-15 and C-13 solid state NMR spectroscopy in combination with theoretical calculations. The results obtained show that the oxime is N-protonated at room temperature on the acid sites of zeolite H-beta. At reaction temperatures of 423 K or above, the two isomeric amides, acetanilide and N-methyl benzamide (NMB) are formed, and interact with the Bronsted acid sites of zeolite H-beta through hydrogen bonds. The presence of residual water hydrolyzes the two amides, while larger amounts inhibit the formation of NMB and cause the total hydrolysis of the acetanilide. Over siliceous zeolite silicalite-N, containing silanol nests as active sites, the oxime is adsorbed through hydrogen bonds and only acetanilide is formed at reaction temperatures of 423 K or above. In the presence of water, the reaction starts at 473 K, still being very selective up to 573 K, and the amide is partially hydrolyzed only above this temperature.
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Keywords

AcetophenoneAcetophenone derivativeAcetophenonesActive-sitesArticleCatalysisChemical structureChemistryComputer simulationCyclohexanoneEpsilon-caprolactamH-betaH-zsm-5Magnetic resonance spectroscopyMechanismMolecular structureN-15-cyclohexanone oximeNuclear magnetic resonance spectroscopyOximeOximesPorosityZeoliteZeolites

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Physical Chemistry Chemical Physics 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, 2009, it was in position 24/121, 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 2025-12-24:

  • WoS: 21
  • Scopus: 21
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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 2025-12-24:

  • 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: 23.
  • 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: 23 (PlumX).
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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 (Fernández Guerras, Ana Belén) and Last Author (Corma Canós, Avelino).

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

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