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O efeito do ultra-som em reações químicas
(Sociedade Brasileira de Química, 2014)
O efeito do ultra-som em reações químicas
(Sociedade Brasileira de Química, 2000-04-01)
Unusual chemical phenomenon associated with ultrasound is on account of cavitation effect. The ultrasound increase the rate and yield of chemical reaction on account of its ability to emulsify liquids. When the ultrasound ...
O efeito do ultra-som em reações químicas
(Sociedade Brasileira de Química, 2000-04-01)
Unusual chemical phenomenon associated with ultrasound is on account of cavitation effect. The ultrasound increase the rate and yield of chemical reaction on account of its ability to emulsify liquids. When the ultrasound ...
Magnetic nanoparticles obtained by homogeneous coprecipitation sonochemically assisted
(2015-12-01)
The present work demonstrates preparation of magnetic nanoparticles by a novel method. Magnetic nanoparticles with potential for biomedical and environmental applications were obtained by homogeneous coprecipitation method ...
Sonochemical effects on ZnO particles
(2014-01-01)
A variety of technological applications related to oxide semiconductor-based devices have attracted great interest among the scientific community, leading to an increase in studies of these materials during the last years. ...
Improved synthesis of benzotriazoles and 1-acylbenzotriazoles by ultrasound irradiation
(Bentham Science Publ Ltd, 2007-01-01)
Some 1H-benzotriazoles have been synthesised in good yields in short times by reaction of o-phenylenediamine with sodium nitrite in acetic acid under ultrasound irradiation. Also, the ultrasound-assisted preparation of ...
Ultrasound-assisted synthesis of aliphatic acid esters at room temperature
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
This work describes the ultrasound-assisted synthesis of saturated aliphatic esters from synthetic aliphatic acids and either methanol or ethanol. The products were isolated in good yields after short reaction times under ...
Photocatalytic and photoelectrocatalytic performance of sonochemically synthesized Cu2O@TiO2 heterojunction nanocomposites
(Ultrasonics Sonochemistry,, 2020)
Monolithic diphasic gels of mullite by sol-gel process under ultrasound stimulation
(1998-12-01)
Diphasic gel in the mullite composition was prepared from a colloidal sol of boehmite mixed with a hydrolyzed tetraethoxisilane (TEOS) solution. The boehmite sol was obtained by peptization of a poorly crystallized or very ...