Results 291 to 300 of about 1,361,120 (359)
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American Journal of Botany, 1930
In connection with nutrition experiments on the cultivated mushroom a silica base plate has been devised which can be adapted to general use in mycology and plant physiology. The use of silica gel has been restricted to the study of cellulose-destroying and soil organisms by the supposed difficulty of preparation. This method is neither complicated nor
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In connection with nutrition experiments on the cultivated mushroom a silica base plate has been devised which can be adapted to general use in mycology and plant physiology. The use of silica gel has been restricted to the study of cellulose-destroying and soil organisms by the supposed difficulty of preparation. This method is neither complicated nor
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2001
[10028-15-6] O3 (MW 48.00) InChI = 1S/O3/c1-3-2 InChIKey = CBENFWSGALASAD-UHFFFAOYSA-N (powerful oxidizing agent; capable of oxidizing carbon–hydrogen bonds2 and a variety of electron-rich functional groups; provides a high effective concentration of ozone2a) Physical Data: ozone, mp −193 °C; bp −111.9 °C; d (0 °C, gas ...
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[10028-15-6] O3 (MW 48.00) InChI = 1S/O3/c1-3-2 InChIKey = CBENFWSGALASAD-UHFFFAOYSA-N (powerful oxidizing agent; capable of oxidizing carbon–hydrogen bonds2 and a variety of electron-rich functional groups; provides a high effective concentration of ozone2a) Physical Data: ozone, mp −193 °C; bp −111.9 °C; d (0 °C, gas ...
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Flame retardant mechanism of silica gel/silica
Fire and Materials, 2000Various types of silica, silica gel, fumed silicas and fused silica were added to polypropylene and polyethylene oxide to determine their flame retardant effectiveness and mechanisms. Polypropylene was chosen as a non-char-forming thermoplastic and polyethylene oxide was chosen as a polar char-forming (slight) thermoplastic.
Richard H. Harris +5 more
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CVD-zirconia on fumed silica and silica gel
Applied Surface Science, 2005Abstract Two series of CVD-zirconia/silica samples were synthesised on the basis of silica gel Si-60 and fumed silica A-380 as substrates using zirconium tetrachloride chemisorbed then hydrolysed heated. The reaction cycles were repeated up to four times.
I.Y. Sulim +6 more
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2008
(for fluorous solid-phase extraction (F-SPE) of fluorous compounds including catalysts, scavengers, reagents, small molecules, and biomolecules; HPLC stationary phase for analysis and separation of fluorinated and nonfluorinated compounds) Physical Data: free-flowing white powder, SPE-grade silica gel, 8.5% carbon loading, average particle size ...
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(for fluorous solid-phase extraction (F-SPE) of fluorous compounds including catalysts, scavengers, reagents, small molecules, and biomolecules; HPLC stationary phase for analysis and separation of fluorinated and nonfluorinated compounds) Physical Data: free-flowing white powder, SPE-grade silica gel, 8.5% carbon loading, average particle size ...
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Supporting titanium dioxide photocatalysts on silica gel and hydrophobically modified silica gel
Journal of Photochemistry and Photobiology A: Chemistry, 1996Abstract This report describes preparation and characterization of TiO 2 supported on silica gels and modified silica gels. The objective is manipulation of the photocatalytic TiO 2 phase on the support, separately from manipulation of the organic solute adsorption and mass transport characteristics of the support.
Cooper H. Langford +2 more
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Sol—gel preparation of silica gel monoliths
Journal of Non-Crystalline Solids, 1996Abstract Gel monoliths were prepared in the system TEOSH 2 OCH 3 CN by pyridine-methyl ether treatments. By this treatment, a drying rate of 0.7 g/h was achieved which is five times faster than for the non-treated gels (0.13 g/h), while maintaining their monolithicity.
Virendra K. Parashar +2 more
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Mixed adsorption of nonionic and cationic surfactants on silica gel and methylated silica gel
Colloids and Surfaces, 1987Abstract The adsorption of ethoxylated octyl phenols Triton X-100 (TX100) and Triton X-305 (TX305) and cetyltrimethylammonium bromide (CTAB) from their single and mixed aqueous solutions on silica gel and methylated silica gel at 25°C has been investigated.
Zhi Huang, Tiren Gu
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Cryoporometry and relaxometry of water in silica-gels
Magnetic Resonance Imaging, 2001Both cryoporometry and relaxometry are tools to determine the pore size distribution (PSD) of a porous material with NMR. The melting point depression is described by the Gibbs-Thomson equation, yielding the PSD from cryoporometry. The enhanced relaxivity is caused by the surface of the porous material, yielding the PSD from relaxometry.
Leo L Pel +2 more
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Adsorption equilibrium of solvent mixtures on silica gel and silica gel coated ceramics
Chemical Engineering and Processing: Process Intensification, 1999Abstract This paper presents the sorption isotherms of the mixtures 2-propanol/water and n-heptane/methylcyclohexane as well as the isotherms of the pure solvents on the adsorbent silica gel and silica gel coated ceramics. The equilibrium data were obtained gravimetrically via an experimental set-up based on the through flowing method.
Wolf, Hartwig, Schluender, Ernst-Ulrich
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