Kinetics of thermochemical reaction of TBP solutions in HCBD with nitric acid in two-phase systems

ABSTRACTThe two-phase systems of pure diluent FS-13 – aqueous solution of 14 mol/L nitric acid and 0.02 mol/L solution of CMPO in diluent FS-13 – aqueous solution of 14 mol/L HNO3 were studied at autoclave temperatures 170 °C and 200 °C. The effect of pre-irradiation on the kinetics of thermolysis was determined. All samples were irradiated using an electron accelerator at a dose rate of 10 kGy/h up to absorbed doses of 0.1, 0.5 and 1 MGy. The parameters of heat and gas emissions were determined during thermolysis of the studied extraction system in a closed apparatus. It has been shown that the conditions required for the growth of autocatalytic oxidation are not created during heating of the two-phase systems in closed vessels even for the extraction systems contacted with 14 mol/l HNO3 for two weeks.

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Kinetics of thermochemical reaction of TBP solutions in HCBD with nitric acid in single-phase systems

Radiochemistry ◽

10.1134/s1066362208020136 ◽

2008 ◽

Vol 50 (2) ◽

pp. 168-170 ◽

Cited By ~ 1

Author(s):

G. F. Egorov ◽

E. V. Belova ◽

G. P. Tkhorzhnitskii ◽

I. G. Tananaev

Keyword(s):

Nitric Acid ◽

Single Phase ◽

Phase Systems ◽

Kinetics Of ◽

Thermochemical Reaction

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Interfacial area generation in two-phase systems and its effect on kinetics of phase transfer catalyzed reactions

Tetrahedron ◽

10.1016/s0040-4020(99)00203-3 ◽

1999 ◽

Vol 55 (20) ◽

pp. 6261-6274 ◽

Cited By ~ 15

Author(s):

Charles M. Starks

Keyword(s):

Phase Transfer ◽

Interfacial Area ◽

Two Phase ◽

Phase Systems ◽

Catalyzed Reactions ◽

Kinetics Of

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On the kinetics of phase separation in aqueous two-phase systems

Journal of Chromatography B Biomedical Sciences and Applications ◽

10.1016/s0378-4347(98)00173-x ◽

1998 ◽

Vol 711 (1-2) ◽

pp. 319-329 ◽

Cited By ~ 41

Author(s):

M.H Salamanca ◽

J.C Merchuk ◽

B.A Andrews ◽

J.A Asenjo

Keyword(s):

Phase Separation ◽

Two Phase ◽

Aqueous Two Phase Systems ◽

Phase Systems ◽

Kinetics Of

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The Kinetics of Oxidation of Benzyl Alcohol by Chromic Acid in Two Phase Systems

Bulletin des Sociétés Chimiques Belges ◽

10.1002/bscb.19840930403 ◽

2010 ◽

Vol 93 (4) ◽

pp. 281-290 ◽

Cited By ~ 4

Author(s):

F. C. Thyrion

Keyword(s):

Benzyl Alcohol ◽

Chromic Acid ◽

Two Phase ◽

Kinetics Of Oxidation ◽

Oxidation Of Benzyl Alcohol ◽

Phase Systems ◽

Kinetics Of

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Coarsening kinetics of intermetallic precipitates in Ni75AlxV25−x alloys

Journal of Materials Research ◽

10.1557/jmr.2007.0013 ◽

2007 ◽

Vol 22 (1) ◽

pp. 61-67 ◽

Cited By ~ 6

Author(s):

Y.S. Li ◽

Z. Chen ◽

Y.L. Lu ◽

Y.X. Wang

Keyword(s):

Dynamic Scaling ◽

Two Phase ◽

Elastic Interactions ◽

Initial Stage ◽

Intermetallic Precipitates ◽

Plate Shape ◽

Phase Systems ◽

Coarsening Kinetics ◽

Kinetics Of ◽

Late Stages

The precipitation kinetics of growth and coarsening of γ′(Ni3Al) and θ (Ni3V) in Ni75AlxV25−x alloys were investigated by microscopic phase-field simulation incorporated with elastic interactions. For the elastic interactions, γ′ aligned along the 〈001〉 direction and θ aligned along the [100] direction, which resulted in plate shape. For the lower (x < 4, at.%) and higher (x > 6) content regions, the growth of first precipitates was dominant at the initial stage and then coarsening was dominant, but the growth and coarsening proceeded simultaneously for the second precipitates. The growth and coarsening of γ′ and θ were dominant, respectively, at the initial and late stages for middle content regions. In addition, dynamic scaling was analyzed in the two-phase systems. It was shown that the dynamic scaling regimes were attained simultaneously at late-stage coarsening for γ′ and θ, despite the different precipitation order.

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