Multiphase catalysis using metal nanoparticles prepared via an electric discharge in a liquid

Artemov, A. V.; Kulygin, V. M.; Pereslavtsev, A. V.; Zhil'tsov, V.A.; Timofeev, A. V.; Krutyakov, Yu. A.; Voshchinin, S. A.; Kudrinskii, A. A.; Бульба, В.А.; Острый, И.И.

doi:10.1134/s2070050412010035

Cited by 1 publication

(1 citation statement)

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“…Suspensions containing metallic nanoparticles with their unique specific physicochemical features as the base of the disperse phase are of great interest. To get metal suspensions various techniques are used: electrical discharge in liquids [1], lazer erosion in liquids [2], plasma-chemical method [3], exposure to the solid substance with ultrasonic stream of liquid having certain energy parameters [4], dispergating metallic devices in liquids with cavitation launched by acoustic waves [5][6][7][8], cavitation with the detonation of gas mixture of inflammable gases [9], cavitation in rotor dispergators [10,11], cavitation in the hydrodynamic confusion-diffusion reactor [12], etc. The above said techniques have both their obvious advantages and some disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Future-Oriented Technology of Preparing Suspensions of Metals

Belyaev

Degterev

Flegentov

2017

SSP

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The subject under study is relevant as the enterprises in different industries are really interested in disperse systems in the form of suspensions. Suspensions are being widely used in many fields. At the same time the problems of improving their quality and increasing the productivity and energy efficiency of machines still exist. In this context, this study aims at getting finely divided suspensions of metals through the erosion of metal plates in the cavitation flow reactor. The construction of the reactor provides for a technically and technologically simple high-capacity process. The leading method of the research is a laboratory experiment and a qualitative and quantitative assessment of the erosion of the metal surface in the region of maximum developed cavitation. The article presents the results of the research into the nature the metal surface damage under cavitation. The sampling materials are copper and fine silver. The experiment shows quite a strong growth of numerous erosions and states that in the beginning in the region of maximum cavitation the net of cavities appears. Then, the cavities fuse and grow in size. Around single caves the areas of plastic deformation with typical metal flows are detected. The minimal sizes of particles, torn away from the surface, are 2-3 mcm. The study is of high practical value for researchers and specialists in nanotechnologies, solid dispersion, sedimentary analysis, flow detection, biomedicine, production of fuel, lubricants, emulsifiers, catalysts, and semiconductors.

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