Exploració per tema "Heterogeneous catalysis"
Ara es mostren els items 1-18 de 18
-
Application of heterogeneous fenton oxidation for the removal of pollutants from wastewater
(Universitat Politècnica de Catalunya / Univerza v Ljubljani, 2014)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: Univerza v LjubljaniDuring the last century there has been a growing concern about water pollution throughout the developed countries. Water has a major impact on the environment as it is used by all living being. This leads to leave the ... -
Breaking-down the catalyst used for the electrophotosynthesis of amino acids by nitrogen and carbon fixation
(2020-09-01)
Article
Accés obertThe electrophotocatalytic synthesis of Glycine and Alanine from a simple gas mixture containing N2, CO2, CH4 and H2O under mild reaction conditions (95 °C and 6 bar) was recently developed using a catalyst formed by ... -
Ceria-zirconia particles wrapped in a 2D carbon envelope: improved low-temperature oxygen transfer and oxidation activity
(2015-10-08)
Article
Accés obertEngineering the interface between different compo-nents of heterogeneous catalysts at nanometer level canradically alter their performances.This is particularly true forceria-based catalysts where the interactions are ... -
Dynamic reorganization of bimetallic nanoparticles under reaction depending on the support nanoshape: the case of RhPd over ceria nanocubes and nanorods under ethanol steam reforming
(2019-04-05)
Article
Accés restringit per política de l'editorialBimetallic catalysts exhibit high performance compared to that of their monometallic counterparts in a wide range of catalytic reactions. Both geometric and electronic phenomena yield unique properties that cannot be ... -
Furfural production in a biphasic system using a carbonaceous solid acid catalyst
(2019-09-05)
Article
Accés obertThe formation of furfural from xylose was investigated under heterogeneously catalyzed conditions with Starbon®450-SO3H as a catalyst in a biphasic system. Experiments were performed based on a statistical experimental ... -
Hydroxyapatite-based biphasic catalysts with plasticity properties and its potential in carbon dioxide fixation
(2022-04-01)
Article
Accés obertThe design of catalysts with controlled selectivity at will, also known as catalytic plasticity, is a very attractive approach for the recycling of carbon dioxide (CO2). In this work, we study how catalytically active ... -
Improved stability of Pd/Al2O3 prepared from palladium nanoparticles protected with carbosilane dendrons in the dimethyl ether steam reforming reaction
(2015-07-01)
Article
Accés obertThe dimethyl ether steam reforming reaction to generate hydrogen was tested over 1wt% Pd/Al2O3 catalysts prepared from different precursors. The conventional catalyst prepared by incipient wetness impregnation from palladium ... -
Influence of different palladium precursors on the properties of solution-combustion-synthesized palladium/ceria catalysts for methane combustion
(2015-07-01)
Article
Accés obertA series of Pd/CeO2 catalysts was prepared by solution combustion synthesis (SCS) using different Pd precursors. The powders were characterized by complementary techniques such as BET surface area measurements, X-Ray ... -
Ligand and support effects on the reactivity and stability of Au38(SR)24 catalysts in oxidation reactions
(2019-10-01)
Article
Accés obertThiolate protected metal nanoclusters are emerging materials for the preparation of atomically defined heterogeneous catalysts. Recently it was revealed that the ligands migrated to the support upon cluster deposition, ... -
Ligand migration from cluster to support: a crucial factor for catalysis by Thiolate-protected gold clusters
(2018-09-17)
Article
Accés obertThiolate protected metal clusters are valuable precursors for the design of tailored nanosized catalysts. Their performance can be tuned precisely at atomic level, e.g. by the configuration/ type of ... -
Metal nanoparticle–carbon nanotubes hybrid catalysts immobilized in a polymeric membrane for the reduction of 4-nitrophenol
(2019-04)
Article
Accés obertIn this work, the synthesis of silver and copper nanoparticles and bimetallic silver–platinum and copper–platinum nanoparticles, in previously functionalized multi-walled carbon nanotubes (MWCNT), was carried out using the ... -
Microwave-assisted furfural production using hectorites and fluorohectorites as catalysts
(2019-09-01)
Article
Accés obertIt has previously been reported that the use of microwave heating, together with the presence of co-solvents, improves the efficiency of furfural production from biomass. Solid acid catalysts can be a good alternative to ... -
Ni-Mg/Al mixed oxides prepared from layered double hydroxides as catalysts for the conversion of furfural to tetrahydrofurfuryl alcohol
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-05-09)
Article
Accés obertNi-Mg/Al mixed oxide catalysts (Ni2Al, Ni2Mg1Al, and Ni1Mg1Al) obtained from layered double hydroxides (LDHs) were tested on the one-pot production of tetrahydrofurfuryl alcohol (TFA) from furfural (FF). Upon calcination ... -
Sustainable solvent-free selective oxidation of benzyl alcohol using Ru(0) supported on alumina
(2023-04-22)
Article
Accés obertThe selective oxidation of primary alcohols into their corresponding carbonyl compounds is challenging because of the easy over oxidization to acids and esters. The traditional reaction requires large amounts of solvent ... -
Texture-modified activated carbons as catalysts in biodecolourisation of azo dyes
(2009)
Comunicació de congrés
Accés restringit per política de l'editorialConsiderable attention has been focused on the reduction of azo dyes discharged from dyeing, textile and other industries since some of them or their metabolites may cause toxicity. The efficient treatment of these ... -
Thermo-mechanochemistry applied on heterogeneous catalyst preparation for CO oxidation and COPrOx reactions
(Universitat Politècnica de Catalunya, 2023-07-04)
Projecte Final de Màster Oficial
Accés obertL'objectiu d'aquest projecte final de màster va ser estudiar els impactes adversos de la termo-mecanoquímica aplicada en la preparació de catalitzadors heterogenis per a les reaccions d'oxidació de CO i COPrOx. El procés ... -
Ultradispersed metal-based catalysts for CO2 hydrogenation
(Universitat Politècnica de Catalunya, 2021-01)
Treball Final de Grau
Accés obert
Realitzat a/amb: Université Claude Bernard Lyon 1An excess of atmospheric CO2 can have serious long-term consequences for life on our planet. Therefore, multiple strategies have been proposed to eliminate it. Among all of them, heterogeneous catalysis of the CO2 hydrogenation ... -
Unveiling the potential of heterogeneous catalysts for molecular solar thermal systems
(John Wiley & sons, 2023-10-10)
Article
Accés obertSolar energy utilization has gained considerable attention due to its abundance and renewability. However, its intermittent nature presents a challenge in harnessing its full potential. The development of energy storing ...