Buscar
Mostrando ítems 21-30 de 54
Metal catalyst adsorption effects in the growth of carbon nanostructures on mesoporous material
(American Scientific Publishers, 2012)
Fe/SBA-15: Characterization and its application to a heterogeneous solar photo-Fenton process in order to decolorize and mineralize an azo dye
(Elsevier, 2020-03)
Fe/SBA-15 catalyst with different iron (Fe) loads (6% and 10% wt.) was synthesized via incipient wetness impregnation. The potential photocatalytic properties were tested using solar radiation, as a novel catalyst in ...
Purification of H2-rich streams by CO preferential oxidation over Pt nanoparticles supported on ordered porous silica
(Elsevier, 2022-06)
In this work, the performance of mesostructured Pt catalysts is studied for the preferential oxidation of CO in H2-rich environments under a wide range of operating conditions. The catalysts were synthesized by incipient ...
Síntesis y caracterización de nanohíbridos poliestireno/sílica mesoporosa mcm-41
(Universidad Tecnológica de PereiraCiencia de los MaterialesPereira, Colombia, 2021)
Preparation and characterization of a supported system of Ni2P/Ni12P5 nanoparticles and their use as the active phase in chemoselective hydrogenation of acetophenone
(IOP Publishing, 2018-03-26)
Ni2P/Ni12P5 nanoparticles were obtained by thermal decomposition of nickel organometallic salt at low temperature. The use of different characterization techniques allowed us to determine that this process produced a mixture ...
Nanoestructuras de sílice, con diámetro y distribución de mesoporos variable, modificadas con ácido tungstofosfórico como catalizadores en la síntesis de quinoxalinasSilica nanostructures, with variable diameter and mesopore size distribution, modified with tungstophosphoric acid as catalyst in the synthesis of quinoxalinesNanoestruturas de sílica, com distribuição variável de diâmetro e tamanho de mesoporos, modificadas com ácido tungstofosfórico como catalisador na síntese de a síntese da quinoxalina
(Universidad Nacional de Colombia, 2020-05)
Se sintetizaron catalizadores (SNX#WPA) basados en ácido tungstofosfórico, en soportes de nanoestructuras de sílice (SNX), con distribución de diámetros y tamaños de mesoporos variables. Las SNX se prepararon en medio de ...
Fe3O4@Au@mSiO2 as an enhancing nanoplatform for Rose Bengal photodynamic activity
(Royal Society of Chemistry, 2017-08)
A novel nanoplatform composed of three types of materials with different functionalities, specifically core-shell Fe3O4@Au nanoparticles encapsulated near the outer surface of mesoporous silica (mSiO2) nanoparticles, has ...
Effect of bimodal mesoporous carbon as PtRu catalyst support for direct methanol fuel cells
(Royal Society of Chemistry, 2020-08)
Mesoporous carbons (MCs) with different pore sizes were synthesized and evaluated as a catalyst support for fuel cells. The MCs were obtained from resorcinol-formaldehyde precursors, polymerized in the presence of ...
Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone
(Elsevier, 2019-06)
Two catalysts were prepared using monodisperse pre-synthetized nanoparticles of metallic nickel and nickel phosphides with the same average diameter. Both nanoparticles species were deposited on the same support: mesoporous ...