Results 11 to 20 of about 513,322 (308)

Silica, Hybrid Silica, Hydride Silica and Non-Silica Stationary Phases for Liquid Chromatography [PDF]

Journal of Chromatographic Science, 2014
Free silanols on the surface of silica are the "villains", which are responsible for detrimental interactions of those compounds and the stationary phase (i.e., bad peak shape, low efficiency) as well as low thermal and chemical stability. For these reasons, we began this review describing new silica and hybrid silica stationary phases, which have ...
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Hollow Silica Particles: A Novel Strategy for Cost Reduction

Nanomaterials, 2021
Thermal insulation materials are highly sought after for applications such as building envelopes, refrigerators, cryogenic fuel storage chambers, and water supply piping.
Daron Spence, David A. Cullen, Georgios Polizos, Nitin Muralidharan, Jaswinder Sharma   +4 more
doaj   +1 more source

Functionalized Mesoporous Thin Films for Biotechnology

Micromachines, 2021
Mesoporous materials bear great potential for biotechnological applications due to their biocompatibility and versatility. Their high surface area and pore interconnection allow the immobilization of molecules and their subsequent controlled delivery ...
Barbara Sartori, Heinz Amenitsch, Benedetta Marmiroli   +2 more
doaj   +1 more source

Production of Acetaldehyde via Oxidative Dehydrogenation of Ethanol over AgLi/SiO2 Catalysts

Bulletin of Chemical Reaction Engineering & Catalysis, 2020
Three AgLi/SiO2 catalysts containing different types of silica supports [small particle size (SPS), medium particle size (MPS) and large particle size (LPS)] were prepared by incipient wetness co-impregnation techniques and tested in oxidative ...
Narawich Mukda, Chaowat Autthanit, Piyasan Praserthdam, Bunjerd Jongsomjit   +3 more
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Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2021
A research using ferronickel slag, the by-product of ferronickel production, as raw material for magnesium extraction was carried out. It is essential to upgrade the value of ferronickel slag instead of used directly for reclamation materials.
Prasetyo A.B., Khaerul A., Mayangsari W., Febriana E., Maksum A., Andinie J., Firdiyono F., Soedarsono J.W.   +7 more
doaj   +1 more source

Silica-Sepiolite Nanoarchitectures

Journal of Nanoscience and Nanotechnology, 2013
Silica-sepiolite heterostructured materials have been prepared as novel nanoarchitectures by generation of SiO2 nanoparticles (NPs) on the surface of the sepiolite fibrous clay mineral. The synthetic approach implies the use of organo-sepiolites dispersed in isopropanol to which is incorporated a selected silicon alcoxysilane, such as ...
Gomez-Aviles, Almudena, Aranda, Pilar, Fernandes, Francisco M., Belver, Carolina, Ruiz-Hitzky, Eduardo   +4 more
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Dependence of the fractality of the silica gel on the method of sol emulsification

Литьë и металлургия, 2021
The article presents experimental data confirming the effect of capillary active substance (surfactants) and sedimentation stability on the final structure of the gel with stabilized silicic acid.
S. S. Tkachenko, V. O. Yemelyanov, K. V. Martynov   +2 more
doaj   +1 more source

Non-isothermal Curing Kinetics and Heat Ｒesistance of SCE-SiO 2 /PES-MBAE Composites

Journal of Harbin University of Science and Technology, 2017
In order to study curing kinetics and heat resistance of supercritical silica(SCE-SiO 2 ) / polyether sulfone(PES) /diallyl bisphenol A(BBA) /bisphenol A diallyl oxide(BBE) /bismaleimide(MBMI)，(BBA BBE/MBMI expressed in MBAE). The micro morphology of the
CHEN Yu-fei, WANG Bo-tao, LI Fang-liang, TENG Cheng-jun, TAN Jun-yan   +4 more
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Effect of Chemical Composition on Microstructure and Hydrophobic Properties of SiO2-TiO2@PDMS Coating [PDF]

Iranian Journal of Materials Science and Engineering, 2023
We report a simple and practical approach for the easy production of superhydrophobic coatings based on TiO2-SiO2@PDMS. In this study, we used tetraethylorthosilicate (TEOS) and titanium tetraisopropoxide (TTIP) as a precursor for the sol-gel synthesis ...
amirreza Sazvar, Seyed mohammad saeed Alavi, hossein Sarpoolaky   +2 more
doaj  

Silaffins in Silica Biomineralization and Biomimetic Silica Precipitation [PDF]

Marine Drugs, 2015
Biomineralization processes leading to complex solid structures of inorganic material in biological systems are constantly gaining attention in biotechnology and biomedical research. An outstanding example for biomineral morphogenesis is the formation of highly elaborate, nano-patterned silica shells by diatoms.
Lechner, Carolin, Becker, Christian
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