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Two-phase kinetic model for epoxidation of soybean oil
(Universidad Nacional de Colombia - Facultad de Ingeniería, 2010)
A two-phase kinetic model was implemented for analyzing conventional epoxidation, using a percarboxylic acid gene- rated in situ through adding hydrogen peroxide in a two-phase system having a homogeneous catalyst. Data ...
Solvent effect on a model SNAr reaction in ionic liquid/water mixtures at different compositions
(Royal Society of Chemistry, 2018)
The reaction of phenyl 2,4,6-trinitrophenyl ether and piperidine was kinetically evaluated in BMIMBF4/water mixtures as the reaction media. This study shows the dramatic effect of the mixture composition on the reacting ...
Immobilized enzyme reactors. Diffusion/convection, kinetics, and a comparison of packed-column and rotating bioreactors for use in continuous-flow systems
(AMER CHEMICAL SOC, 1996-05-15)
The roles of chemical kinetics and mass transfer in two types of bioreactors (packed-column reactors and rotating disk bioreactors), used with continuous-now sample/reagent(s) processing, are discussed in detail. A normalized ...
Nitro radical anion formation from nifurtimox II: electrochemical evidence
(Elsevier, 1995)
The cyclic voltammetric (CV) behaviour of nifurtimox was studied. The addition of aprotic solvent (DMF) to nifurtimox in an aqueous citrate buffer system was examined. Qualitatively this results in separation of the initial ...
Synthesis and evaluation of new heteroaryl nitrones with spin trap properties
(Royal Society of Chemistry, 2020)
A new series of heteroaryl nitrones were synthesized and evaluated as free radical traps due to the results showed in our previous report. The physicochemical characterization of these new nitrones by electron spin resonance ...
Rate Constants for Reactions in Viscous Media: Correlation between the Viscosity of the Solvent and the Rate Constant of the Diffusion-Controlled Reactions
(1988)
The kinetics of the quenching of excited pyrene by several molecules in a variety of hydrocarbon solvents and in a diol are reported. The rate constants for reaction of the excited pyrene are, for the most part, ...
Reactivity of 1,4-dihydropyridines toward SIN-1-derived peroxynitrite
(KLUWER ACADEMIC/PLENUM PUBL, 2004-10)
Purpose. To study the reactivity of C4-substituted 1,4-dihydropyridines (1,4-DHP), with either secondary or tertiary nitrogen in the dihydropyridine ring, toward SIN-1-derived peroxynitrite in aqueous media at pH 7.4.
Methods. ...
Characterization of chemical kinetics in membrane-based liquid-liquid extraction of molybdenum(VI) from aqueous solutions
(2009)
This study aims to describe the mass transfer in a membrane-based solvent extraction system for the extraction of molybdenum(VI) from aqueous solutions, identifying chemical kinetics of the complex formation at the interface. ...
Kinetics and Mechanism of the Photosensitized Oxidation of Furosemide
(1998)
Detection of O,('A,) phosphorescence emission, A,,,, =
1270 nm, following laser excitation and steady-state competitive
methods was employed to measure total rate constants,
k,, for the reactions of the diuretic furosemide, ...
Experimental and theoretical study on the substitution reactions of aryl 2,4-dinitrophenyl carbonates with quinuclidines
(PERGAMON-ELSEVIER SCIENCE LTD, 2006-03-13)
The reactions of quinuclidines with phenyl, 4-methylphenyl, and 4-chlorophenyl 2,4-dinitrophenyl carbonates are kinetically evaluated in aqueous solution. The Bronsted-type plots (log k(N) vs pK(a) of quinuclidinium ions) ...