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Mostrando ítems 11-20 de 27
Towards the photophysical studies of humin by-products
(Royal Society of Chemistry, 2017)
Biomass conversion into chemicals, materials and fuels emerged in the past decade as the most promising alternative to the current petroleum-based industry. However, the chemocatalytic conversion of biomass and bio-derived ...
Benign-by-design preparation of iron oxides/humins catalytic nanocomposites
(Royal Society of Chemistry, 2017)
The current acid-catalyzed conversion of biomass feedstocks yields substantial quantities of undesired by-products called humins, for which applications are yet to be found. This work aims to provide a starting point for ...
Wheat bran valorisation: Towards photocatalytic nanomaterials for benzyl alcohol photo-oxidation
(Elsevier, 2017)
In this work, we have successfully synthesized a set of titania photocatalytic nanocomposites by the
incorporation of different TiO2 content on wheat bran residues. The obtained catalysts were characterized
by different ...
Reconstruction of humins formation mechanism from decomposition products: A GC-MS study based on catalytic continuous flow depolymerizations
(Elsevier, 2019)
Humins, a by-product of biomass chemical conversion technologies, still present controversies in their structural and mechanistic identification. Traditional studies of the structure and mechanism have focused so far on ...
Mechanochemical Preparation of Novel Polysaccharide-Supported Nb2O5 Catalysts
(MDPI, 2019)
Polysaccharides extracted from natural sources can be used as starting material for the preparation of nanoparticle supported composites. A novel family of bio-nanocomposites was mechanochemically synthesized by using ...
NH4F Modified Al-SBA-15 Materials for Esterification of Valeric Acid to Alkyl Valerates
(MDPI, 2019)
Al-SBA-15 materials were functionalized by ball milling with several niobium loadings (0.25–1 wt.%) and/or with several F- loadings, using NH4F as a precursor. The catalysts synthesized in this study were characterised by ...
Mechanochemically Synthesized Supported Magnetic Fe-Nanoparticles as Catalysts for Efficient Vanillin Production
(MDPI, 2019)
Magnetically separable nanocatalysts were synthesized by incorporating iron nanoparticles on a mesoporous aluminosilicate (Al-SBA-15) through a mechanochemical grinding pathway in a single step. Noticeably, magnetic features ...
Mechanochemical Synthesis of TiO2 Nanocomposites as Photocatalysts for Benzyl Alcohol Photo-Oxidation
(MDPI, 2016)
TiO2 (anatase phase) has excellent photocatalytic performance and different methods
have been reported to overcome its main limitation of high band gap energy. In this work,
TiO2-magnetically-separable nanocomposites ...
Simple Preparation of Novel Metal-Containing Mesoporous Starches
(MDPI, 2013)
Metal-containing mesoporous starches have been synthesized using a simple and
efficient microwave-assisted methodology followed by metal impregnation in the porous
gel network. Final materials exhibited surface areas >60 ...
Continuous-Flow Hydrogenation of Methyl Levulinate Promoted by Zr-Based Mesoporous Materials
(MDPI, 2019)
Several Zr-based materials, including ZrO2 and Zr-SBA-15, with different silicon/zirconium molar ratios, and ZrO2/Si-SBA-15 (where SBA-15 stands for Santa Barbara Amorphous material no. 15), have been prepared as hydrogenation ...