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21.
Pavlova N. V. Spiridonov F. F. Svetlov S. A. Pavlov I. N. Volkov Yu. P. 《Russian Journal of Applied Chemistry》2003,76(7):1094-1098
Centrifugal separation of low-concentration suspension in a biconical rotor of a centrifuge was modeled numerically. A system of equations describing the motion of solid particles in a fluid flow was constructed and solved. The effect of geometric parameters of the centrifuge rotor on the separation efficiency was demonstrated. 相似文献
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27.
A. I. Volkov G. G. Volkova V. K. Yermolaev L. A. Sazanov 《Reaction Kinetics and Catalysis Letters》1982,20(3-4):277-282
A mechanism is proposed for the radiolysis of adsorbed N2O describing the experimental dependences of the radiation-chemical yields of O
st
–
and N2 on N2O coverages.
N2O, - O st – N2 N2O.相似文献
28.
Catalytic properties of trinuclear thio complexes of rhenium in hydrogenation of m-nitrobenzoic acid
V. M. Belousov T. A. Pal'chevskaya S. V. Volkov V. L. Kolesnichenko L. V. Bogutskaya S. P. Sharavskaya 《Theoretical and Experimental Chemistry》1993,28(3):194-196
Trinuclear thio complexes of rhenium based on Re3S7 and Re3S4 cluster groupings have been synthesized and studied as catalysts in liquid-phase hydrogenation of m-nitrobenzoic acid. Thio complexes containing as Re3S7 cluster surrounded by hydroxo groups are the most active. Complexes with an Re3S4 cluster are less active. Reversible Re3S7 Re3S4 + S8 transitions were found to be possible in solution.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 28, No. 3, pp. 239–242, May–June, 1992. 相似文献
29.
A.G. Volkov M.I. Gugeshashvili A.F. Mironov L.I. Boguslavsky 《Journal of Electroanalytical Chemistry》1982,141(5):551-558
The redox reaction between the ferric complex of hydrophobic porphyrin and sodium dithionite in two different phases occurring at the interface between two immiscible liquids has been investigated by Volta potential measurements and spectroscopy. The reduction of the ferric complex of hydrophobic porphyrin adsorbed at the interface was found to be accompanied by a potential shift in the negative direction and to depend significantly on the nature of the anion and the ionic strength of the supporting electrolyte. Specifically adsorbed halogen anions inhibited the redox reaction in the sequence: Cl?, Br?, I?. Depending on pH, the ferric complex of hydrophobic porphyrin exists in the uncharged (FeP-O-PFe) form or in the cation FeP+ form. The interaction between the ferric complex hydrophobic porphyrin and water has also been investigated. 相似文献
30.
Vladimir L. Kolesnichenko Victor B. Rybakov Leonid A. Aslanov Sergei V. Volkov 《Journal of Cluster Science》1997,8(1):27-45
Thioselenohalide complexes Mo2(μ-S2)2Cl6(SeCl2)2 (I), Mo2(μ-S2)2Br6(SeBr2)2 (II), and W2(μ-S2)2Br6(SeBr2)2 (III) were synthesized by the reactions of corresponding metal halides or carbonyls or molybdenum metal with excesses of S2 X 2+Se2 X 2 mixtures. The complex W2(μ-S2)2Cl6(SeCl2)2 (IV) was obtained by an exchange reaction between (III) and excess of Se2Cl2. Coordination of the neutral SeX 2 ligands to thiohalidesM 2(μ-S2)2 X 6 results in higher thermal stability, and suggests the possibility to synthesize SeX 2 complexes of the unstable parent tungsten thiohalides. An unusual oxidative addition reaction of (I) was detected: {fx27-1} Both (I) and (IV) were characterized by X-ray crystal structure analysis. They are isostructural and form discrete molecules. Bridging S 2 2? ligands are coordinated perpendicularly to the metal-metal bond;d(M?M)=2.8066 Å and 2.793 Å for I and IV, respectively. Nonequivalence of chlorine atoms which are bound to the metal atom, relate to nonequivalence of halogen atoms in the complexesM 2(μ?S2)2 X 8 2? . Chlorine atomstrans to SeCl2 ligands form short bonds with the metal; the corresponding35Cl NQR frequency is increased. The selenium dichloride ligand is ambidentate. The selenium atom binds as a donor to the metal and as an acceptor to two chlorine atoms which are also bound covalently to the same metal atom. 相似文献