NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/201862026-10-09T19:35:23Z2026-10-09T19:35:23ZSynthesis of a novel ion exchanger, ceric vanadate and its application to the separation of <sup>90</sup>Sr-<sup>90</sup>Y pairMaji, SamirLahiri, SusantaBasu, Shttp://nopr.niscpr.res.in/handle/123456789/202042013-08-02T16:32:34Z2005-09-01T00:00:00ZTitle: Synthesis of a novel ion exchanger, ceric vanadate and its application to the separation of <sup>90</sup>Sr-<sup>90</sup>Y pair
Authors: Maji, Samir; Lahiri, Susanta; Basu, S
Abstract: A new inorganic ion exchanger, ceric vanadate,
has been synthesized and characterized. The ion exchanger is highly stable towards
thermal, chemical and radiation effects. The probable
formula of the exchanger is 4CeO<sub>2</sub>.5V<sub>2</sub>O<sub>5</sub>.12H<sub>2</sub>O.
It has high ion exchange capacity for some metal ions. The newly synthesized ion
exchanger has been used to separate <sup>90</sup>Y from <sup>90</sup>Sr-<sup>90</sup>Y
equilibrium mixture. High purity <sup>90</sup>Y has been eluted out with 0.01 <i>M</i>
EDTA solution.
Page(s): 1838-18402005-09-01T00:00:00ZUltrasonic measurements in solutions of electrolytes in dimethyl sulfoxide + water mixtures at different temperaturesMehra, Ritahttp://nopr.niscpr.res.in/handle/123456789/202032013-08-02T16:32:26Z2005-09-01T00:00:00ZTitle: Ultrasonic measurements in solutions of electrolytes in dimethyl sulfoxide + water mixtures at different temperatures
Authors: Mehra, Rita
Abstract: Ultrasound speed and density of electrolytes
CdCl<sub>2</sub>+ KCl have been measured in DMSO and H<sub>2</sub>O mixtures at
2 MHz from 25 to.45°C. Various derived parameters such as acoustic impedance, adiabatic
compressibility and solvation number have been calculated. The results have
been discussed in terms of the nature of electrolyte and solvent mixtures. Solvation
number throws light on the solute-solute and solute-solvent interactions.
Page(s): 1834-18372005-09-01T00:00:00ZEffect of solvents and nucleophiles on the reactivity of allyl bromide — A kinetic studyReddy, S RangaKalyani, PManikyamba, Phttp://nopr.niscpr.res.in/handle/123456789/202022013-08-02T16:32:18Z2005-09-01T00:00:00ZTitle: Effect of solvents and nucleophiles on the reactivity of allyl bromide — A kinetic study
Authors: Reddy, S Ranga; Kalyani, P; Manikyamba, P
Abstract: The kinetics of the reaction of allyl bromide
with benzoyl thiosemicarbazide has been studied in different protic and aprotic
solvents. Correlation of rate constants with different solvent
parameters applying linear multiple
regression analysis indicates that the non-specific solvent parameters Y, P and
nucleophilicity, B, influence the rate of nucleophilic substitution. Using these
solvent parameters, the linear solvation energy relationship is derived. Study of
the reaction with substituted thiosemicarbazides indicates that structural effects
on rate of the reaction are minimal.
Page(s): 1831-18332005-09-01T00:00:00ZKinetics and mechanism of oxidation of substituted benzyl alcohol by polymer supported oxidizing agentJawanjal, A LHilage, N Phttp://nopr.niscpr.res.in/handle/123456789/202012013-08-01T16:32:04Z2005-09-01T00:00:00ZTitle: Kinetics and mechanism of oxidation of substituted benzyl alcohol by polymer supported oxidizing agent
Authors: Jawanjal, A L; Hilage, N P
Abstract: The kinetics of oxidation of monosubstituted
benzyl alcohol with polymer supported chromic acid in 1:4 dioxane has been studied.
The reaction is found to be of zero order each in [alcohol] and [oxidant). The effect
of substituent on the rate of oxidation and the thermodynamic parameters are
evaluated. The reaction products have been isolated and characterised by their
derivatives. A probable mechanism of oxidation is proposed.
Page(s): 1827-18302005-09-01T00:00:00Z