Results 191 to 200 of about 6,361 (234)

Mechanochemical synthesis of polyboronphenylsiloxanes

Polymer, 2020
Abstract In the present work, the mechanochemical synthesis of polyboronphenylsiloxanes was carried out. Boron difluoride acetylacetonate and polyphenylsilsesquioxane were used as starting reagents. The products of the syntheses were studied by IR and NMR spectroscopy, elemental and X-ray phase analysis, gel permeation chromatography and MALDI-TOF ...
V. Libanov, A. Kapustina, N. Shapkin, P. Dmitrinok, Z. Puzyrkov   +4 more
openaire   +1 more source

Mechanochemical synthesis of γ-Bi2O3

Solid State Sciences, 2004
A series of gamma-Bi2O3 phases doped with Zn, Si, Pb and Fe was prepared by mechanochemical treatment of corresponding oxide mixtures with a nominal composition 6Bi(2)O(3) (.) MOx (MOx = ZnO, SiO2, PbO) and 12Bi(2)O(3) (.) Fe2O3 using high-energy ball mill. The products are characterized by X-ray powder diffraction technique.
Poleti, Dejan, Karanović, Ljiljana, Zdujić, Miodrag, Jovalekić, Čedomir, Branković, Zorica   +4 more
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Mechanochemical synthesis of polygermanophenylsiloxanes

ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ, 2022
One of the promising methods for obtaining metal-containing polyorganosiloxanes is the synthesis by mechanoactivation. The aim of this work is to study the possibility of using the exchange decomposition method for the synthesis of polygermanophenylsiloxanes under conditions of mechanochemical activation.
A.A. Kapustina, L.A. Belozerova, V.V. Libanov, V.B. Kolycheva   +3 more
openaire   +1 more source

Mechanochemical organic synthesis

Chemical Society Reviews, 2013
Recently, mechanical milling using a mixer mill or planetary mill has been fruitfully utilized in organic synthesis under solvent-free conditions. This review article provides a comprehensive overview of various solvent-free mechanochemical organic reactions, including metal-mediated or -catalyzed reactions, condensation reactions, nucleophilic ...
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Mechanochemical synthesis of mullite

Glass and Ceramics, 1999
The specifics of mechanical activation processes in modifying synthetic corundum powder and gels by silicon alkoxide are considered. As Al2O3 is milled with a silicon alkoxide additive, Al2O3 and SiO2 reactants are activated with the formation of an intermediate self-organized complex, in which the mechanochemical interaction proceeds accompanied by ...
G. D. Semchenko, I. N. Opryshko, Ya N. Goncharenko, N. S. Chopenko, L. A. Angolenko   +4 more
openaire   +1 more source

Mechanochemical synthesis of LiNiO2

Materials Science and Engineering: B, 2005
Abstract The mechanochemical process has been used to synthesize precursors and evaluate their efficacy in generating the layered structure of LiNiO2 at lower heat treatment temperatures. A comprehensive study of the as-milled precursor has been conducted using simultaneous TG/DTA.
Chun-Chieh Chang, Prashant N. Kumta
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Mechanochemical Modification and Synthesis of Drugs

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Mechanochemical Organic Synthesis

2016
Mechanochemical Organic Synthesis compiles the current literature and also offers practical protocols that industrial and academic scientists can immediately apply in their daily work. With the widespread and increasing interest in green chemistry, numerous environmentally friendly methodologies for the synthesis of organic molecules have been ...
Štrukil, Vjekoslav, Margetić, Davor
openaire   +4 more sources

Mechanochemical synthesis of hercynite

Materials Chemistry and Physics, 2002
Abstract The synthesis of hercynite (FeAl2O4) by thermal treatment of mechanochemically activated (Al+Fe3O4) mixtures is studied. The evolution of structure, texture and physicochemical behavior with activation time is analyzed by XRD, DTA and SEM. From activated samples, it is possible to obtain hercynite by dynamic thermal treatment at 1200 °C in ...
Pablo M. Botta, Esteban F. Aglietti, José M. Porto López   +2 more
openaire   +1 more source

Mechanochemical synthesis of nanoparticles

Journal of Materials Science, 2004
The results of recent investigation of the mechanochemical synthesis of inorganic nanoparticles are reviewed. It was demonstrated that, by selecting suitable chemical reaction paths, stoichiometry of starting materials and milling conditions, mechanochemical processing can be used to synthesise a wide range of nanocrystalline particles dispersed within
Takuya Tsuzuki, Paul G. McCormick
openaire   +1 more source