نتایج جستجو برای: mesoporosity

تعداد نتایج: 294  

A series of tungestophosphoric acid and vanadium oxide supported on Mesocellulous Silica Foams (MCFs) featuring a well-defined three-dimensional (3D) mesoporosity were studied with regard to their performance in the photocatalytic activity to degrade Oezine Y (OY). This nanosized mesoporous catalyst (PW12@V-MCF) was characterized by FTIR, XRD, BET and TEM. XRD shows that the structure of MCF re...

A series of tungestophosphoric acid and vanadium oxide supported on Mesocellulous Silica Foams (MCFs) featuring a well-defined three-dimensional (3D) mesoporosity were studied with regard to their performance in the photocatalytic activity to degrade Oezine Y (OY). This nanosized mesoporous catalyst (PW12@V-MCF) was characterized by FTIR, XRD, BET and TEM. XRD shows that the structure of MCF re...

2015
Elizabeth A. Dawson Gareth M.B. Parkes Peter Branton

Activated carbons with micropores for adsorption and filtration of the volatile constituents of mainstream cigarette smoke, together with mesopores for enhanced mass transport were prepared by a novel route. Treatment of coconut shell or other lignocellulosic precursors with aqueous NaOH, followed by thorough washing, charring and steam activation produced carbons with enhanced adsorption chara...

1999
Thomas R. Pauly Yu Liu Thomas J. Pinnavaia Simon J. L. Billinge Thomas P. Rieker

Three different water-alcohol cosolvent systems were used to assemble mesoporous molecular sieve silicas with wormhole framework structures (previously denoted HMS silicas) from an electrically neutral amine surfactant (S°) and a silicon alkoxide precursor (I°). The fundamental particle size and associated textural (interparticle) porosity of the disordered structures were correlated with the s...

Journal: :Chemical research in toxicology 2009
Zhimin Tao Bonnie B Toms Jerry Goodisman Tewodros Asefa

We report different mesoporosity-dependent and functional group-dependent cytotoxicity and endocytosis of various silica nanomaterials on suspended and adherent cells. This dependency further varied with incubation time and particle dosage, and appeared to be associated with the particles' endocytotic efficiency and their chemical and physical properties. We studied two common mesoporous nanoma...

Journal: :Reaction Kinetics, Mechanisms and Catalysis 2022

Abstract The activity of penta- FTPhPFe(III)/Al 2 O 3 biomimetic catalyst in the reaction methane direct conversion into methanol by green oxidant hydrogen peroxide was studied at T = 150–350 °C and atmospheric pressure, where yield 19.2% with 28%. Based on results structural analysis Al support sample mesoporosity pore size range d p 2.4–22.2 nm cylindric shape an open end synthesized nanostru...

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