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Sonolysis of chlorobenzene in the presence of transition metal salts

100%
Stavarache C., Nishimura R., Maeda Y., Vinatoru M.
Open Chemistry
|
2003
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vol. 1
|
issue 4
339-355
EN
Sonolysis of aqueous solution of chlorobenzene at 200 kHz frequency in the presence of transition metals chlorides was investigated. Through analyzing the nature and distribution of the products detected in the reaction mixture, a new mechanism of sonodegradation is advanced. Depending on the metals used and their behavior during sonolysis, we were able to discriminate between inside and outside cavitation bubble mechanisms. Iron and cobalt chlorides, which could undergo redox reactions in the presence of HO radicals generated ultrasonically, give higher amounts of phenolic compounds compared with palladium chloride that undergoes a reduction to metal. Palladium reduction takes place in bulk solution and therefore all organic reactions that compete for hydrogen must occur also in bulk solution. Accordingly, palladium can be a useful tool in determining the reaction site and the decomposition mechanism of organic compounds under ultrasonic irradiation.
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The Effect of Transition Metals on Quasicrystalline Phase Formation in Mechanically Alloyed Al65Cu20Fe15 Powder

88%
Mitka M., Kalita D., Góral A., Lityńska-Dobrzyńska L., Mitka M., Kalita D., Góral A., Lityńska-Dobrzyńska L.
Archives of Metallurgy and Materials
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2020
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vol. 65
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issue 3
3
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The effect of pressure on the elastic constants of Cu, Ag and Au: a molecular dynamics study

75%
Çiftci Y., Çolakoğlu K., Kazanç S., SonerÖzgen
Open Physics
|
2006
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vol. 4
|
issue 4
472-480
EN
This paper describes the effect of pressure on some the mechanical properties of transition metals Cu, Ag, and Au, such as elastic constants and bulk modulus. Using molecular dynamics (MD) simulation, the present study was carried out using the modified many-body Morse potential function expression in the framework of the Embedded Atom Method (EAM). The effect of pressure on equilibrium volume, elastic constants, and bulk modulus were determined, and found to be in agreement with other theoretical calculations and experimental data.
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