Ruthenium nanoparticles supported on N-containing mesoporous polymer catalyzed aerobic oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF)

Industrial & Engineering Chemistry Research, 2014

Catalysis Letters, 2012

Chemical engineering transactions, 2020

Furfural (FF) is one of the main components of bio-oil obtained by the treatment of lignocellulose biomass. Furfural alcohol (FA) as the main product of the selective FF hydrogenation is a source of value-added chemicals. In this paper, the results of the study of ruthenium catalysts based on hyper-crosslinked polystyrene (PS) in the selective hydrogenation of FF to FA are presented. Two types of ruthenium catalysts: nanoparticles of RuO2 and Ru0 stabilized in the PS pores were synthesized and compared. The novelty of this work is in the comparison of the PS stabilized Ru0 and RuO2 nanoparticles were performed and differences in their catalytic properties were shown. The BET, TEM, and SAXS data showed the formation of Ru-containing nanoparticles similar in size and structure for both catalysts. The comparison of the catalytic properties of the Ru catalysts showed that the catalyst with Ru0 (Ru-PS) exhibits higher values of FF conversion (99 %) and selectivity to FA (96 %). It can be...

ChemCatChem, 2014

AIP Conference Proceedings, 2018

Chemical communications (Cambridge, England), 2017

We report a heterogeneous catalytic protocol for the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) using a mesoporous manganese doped cobalt oxide material. The absence of precious metals and additives, use of air as the sole oxidant, and easy isolation of products, along with proper catalyst reusability, make our catalytic protocol attractive for the selective oxidation of HMF to DFF.

Reaction Kinetics, Mechanisms and Catalysis, 2013

Catalysts, 2021

Oxidation of 5-hydroxymethylfurfural (HMF), a major feedstock derived from waste/fresh biomass, into 2,5-furandicarboxylic acid (FDCA) is an important transformation for the production of biodegradable plastics. Herein, we investigated the effect of the support (unmodified and modified titania, commercial alumina, and untreated and treated Sibunit carbon) of mono- and bimetallic catalysts based on noble metals (Ag, Au, Pd) on selective HMF oxidation with molecular oxygen to FDCA under mild and basic reaction conditions. The higher selectivity to FDCA was obtained when metals were supported on Sibunit carbon (Cp). The order of noble metal in terms of catalyst selectivity was: Ag < Au < Pd < PdAu. Finally, FDCA production on the most efficient PdAu NPs catalysts supported on Sibunit depended on the treatment applied to this carbon support in the order: PdAu/Cp < PdAu/Cp-HNO3 < PdAu/Cp-NH4OH. These bimetallic catalysts were characterized by nitrogen adsorption-desorption...

Revista Venezolana de Gerencia

Enfrentarse al problema ambiental que vive el planeta, es uno de los retos más grandes al garantizar la permanencia del ser humano, según lo expresado en la Conferencia Científica de las Naciones Unidas, también conocida como la Primera Cumbre para la Tierra; la gestión de riesgos estratégicamente planificada y aplicada, allana el camino para obtener una ventaja competitiva y una ventaja decisiva para las organizaciones públicas. El objetivo de la investigación fue analizar la gestión de riesgo de desastres en el macro de la cultura preventiva desde las experiencias vividas de los trabajadores de un hospital público de Lima. El presente estudio se enmarca en el paradigma interpretativo bajo un enfoque cualitativo, en cuanto al diseño de investigación, Hernández & Mendoza (2018) lo enmarcan dentro del diseño fenomenológico interpretativo al describir, explorar, pero sobre todo al comprender el contexto en el cual se desarrolla la investigación debido a la flexibilidad del proceso que...

R.Boucharlat & D. Agut-Labordère (edd.), Achemenet. Vingt ans après. Etudes offertes a Pierre Briant (Leuven), 2021