Výsledky vyhledávání - "Ernesto C. Zuleta"

Deactivation of Co-Schiff base catalysts in the oxidation of para-substituted lignin models for the production of benzoquinones

Autor: Gabriel A. Goenaga, Thomas Elder, Thomas A. Zawodzinski, Ernesto C. Zuleta, Joseph J. Bozell

Publikováno v: Catalysis Science & Technology. 10:403-413

The effect of quinones on the deactivation of four- and five-coordinate Co-Schiff base catalysts used for the oxidation of lignin models is systematically studied. 2,6-Dimethoxy-1,4-benzoquinone does not affect the catalytic activity of any of the st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d6537542b7a6f823cce1db18bd4148b
https://doi.org/10.1039/c9cy02040c

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Alkylation of monomeric, dimeric, and polymeric lignin models through carbon-hydrogen activation using Ru-catalyzed Murai reaction

Autor: Joseph J. Bozell, Ernesto C. Zuleta

Publikováno v: Tetrahedron. 100:132475

In this study, we have assessed directed carbon-hydrogen activation (CHA) for alkylation of monomeric, dimeric, and polymeric lignin models using Murai's catalyst [RuH2(CO)(PPh3)3]. Based on related work from our laboratory showing that isolated orga

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c06ef5e4e7e7c940c28797682f2ec8f2
https://doi.org/10.1016/j.tet.2021.132475

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Evaluation of the Stability of Polymeric Materials Exposed to Palm Biodiesel and Biodiesel⁻Organic Acid Blends

Autor: Jorge A. Calderón, Libia M. Baena, Ernesto C. Zuleta

Publikováno v: Polymers; Volume 10; Issue 5; Pages: 511
Polymers
Repositorio UdeA
Universidad de Antioquia
instacron:Universidad de Antioquia
Polymers, Vol 10, Iss 5, p 511 (2018)

The aim of the present work is to evaluate the impact of pure palm biodiesel fuel (B100) and biodiesel blends with 0.32% oleic, palmitic, acetic, myristic, and stearic acids on the properties of some polymeric materials used commonly in the manufactu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cde260c2b251a86a59a3b6476f534c85
https://pubmed.ncbi.nlm.nih.gov/30966545

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Chapter 2. Lignin Isolation Methodology for Biorefining, Pretreatment and Analysis

Autor: Joseph J. Bozell, Stephen E. Chmely, William T. Hartwig, Rebecca E. Key, Nicole Labbé, Preenaa Venugopal, Ernesto C. Zuleta

The success of the biorefinery will depend on deriving value from the lignin fraction of lignocellulosic feedstocks. Thus, it will be necessary to develop procedures that provide a separate and usable lignin stream for chemical transformation. A wide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c7655844bf60189c5bdb77f812c633f
https://doi.org/10.1039/9781788010351-00021

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The oxidative stability of biodiesel and its impact on the deterioration of metallic and polymeric materials: a review

Autor: Luis A. Rios, Ernesto C. Zuleta, Libia M. Baena, Jorge A. Calderón

Publikováno v: Journal of the Brazilian Chemical Society v.23 n.12 2012
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 23, Issue: 12, Pages: 2159-2175, Published: DEC 2012

The purpose of this paper is to analyze the main issues concerned with the oxidative and storage stabilities of biodiesel and how they affect different metallic and polymeric materials present in automotive parts and in biodiesel storage structures.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9a611332547651d8cfa4aeded882994
https://doi.org/10.1590/s0103-50532012001200004

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Oxidative stability and cold flow behavior of palm, sacha-inchi, jatropha and castor oil biodiesel blends

Autor: Luis A. Rios, Ernesto C. Zuleta, Pedro Benjumea

Publikováno v: Fuel Processing Technology. 102:96-101

Oxidative stability and cold-filter plugging points (CFPP) of blends of biodiesel from palm, sacha-inchi, jatropha and castor oils were evaluated. Blends were made as a strategy to obtain a biodiesel with a better performance. These properties of bio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3aaa3cd46fd2ba7bcb9150ee56930856
https://doi.org/10.1016/j.fuproc.2012.04.018

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Estudio de la estabilidad oxidativa de biodiésel de aceite de palma en contacto con materiales metálicos y poliméricos automotrices

Autor: Ernesto C. Zuleta, Luis A. Rios, Jorge A. Calderón

Publikováno v: Repositorio Digital Univalle
Universidad del Valle
instacron:Universidad del Valle
Repositorio UdeA
Universidad de Antioquia
instacron:Universidad de Antioquia

RESUMEN: En el presente trabajo se evaluó la estabilidad oxidativa del biodiésel de palma africana bajo condiciones de almacenamiento prolongado, y en presencia de materiales metálicos y poliméricos que se encuentran tanto en los sistemas de alma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99c38665c8de5b92386aaeaea449512d
https://doi.org/10.25100/iyc.v14i2.2656

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