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This research has been funded through the Comunidad de Madrid and Rey Juan Carlos University project URJC-CM-2010-CET-5450.

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Escola, JmCorresponding AuthorSerrano, DpAuthorAguado, JAuthorBriones, LAuthor
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Article

Hydroreforming of the LDPE Thermal Cracking Oil over Hierarchical Ni/Beta Catalysts with Different Ni Particle Size Distributions

Publicated to:Industrial & Engineering Chemistry Research. 54 (26): 6660-6668 - 2015-07-08 54(26), DOI: 10.1021/acs.iecr.5b01160

Authors: Escola, Jose M; Serrano, David P; Aguado, Jose; Briones, Laura

Affiliations

IMDEA Energia, Madrid 28935, Spain - Author
Univ Rey Juan Carlos, ESCET, Grp Chem & Environm Engn, Madrid 28933, Spain - Author

Abstract

A number of catalyst made of Ni particles of different size distributions supported on a hierarchical beta zeolite (Ni/h-beta) were prepared and tested in the hydroreforming of low-density polyethylene (LDPE) thermal cracking oils. The materials were prepared by identical impregnation method but using different nickel precursors: chloride, nitrate, acetylacetonate, and tris(ethylenediamine) nickel(II) chloride (TEDAN). A variation in the Ni particles size distribution was obtained depending on the metal precursor; whereas no significant differences in the acidic properties were detected. Ni nitrate and acetylacetonate resulted in smaller and more dispersed particles, thus closer to the acid sites, driving to higher hydrogenation and hydrocracking activities. In contrast, Ni TEDAN and chloride led toward larger nickel Particles which prevented intermediate Species to lie rapidly hydrogenated and so favored the production of aromatic and branched hydrocarbons. Hence, the catalyst coming from Ni nitrate produced 25 wt % iso-paraffins and 71% light products (C-1-C-12), while the material prepared with Ni chloride produced 35% iso-paraffins and 60% light products.

Keywords
Acidic propertiesAromatic hydrocarbonsBetaBranched hydrocarbonsCatalystsCatalytic crackingChlorine compoundsCracking (chemical)CracksCrystallite sizeDispersed particleHydrocrackingHydrogenationImpregnation methodsIntermediate specieLow density polyethylene(ldpe)Mcm-41MetalNanoparticlesNi/al2o3 catalystsNickelNickel particlesNickel precursorNickel-catalystsNitratesParaffinsParticle sizeSize distributionSupported catalysts

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Industrial & Engineering Chemistry Research due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2015, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Industrial and Manufacturing Engineering. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1, 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: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 3.51 (source consulted: Dimensions Apr 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-04-25, the following number of citations:

  • WoS: 27
  • Scopus: 27
  • OpenCitations: 26
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 2025-04-25:

  • 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: 46.
  • 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: 45 (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: 0.25.
  • The number of mentions on the social network X (formerly Twitter): 1 (Altmetric).
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 (Escola Sáez, José María) and Last Author (Briones Gil, Laura).

the author responsible for correspondence tasks has been Escola Sáez, José María.