Kinetics Of Liquid-phase Reactions Research Articles

Dependence of the liquid-phase reaction kinetics on the supramolecular structure of reagents

Dependence of the liquid-phase reaction kinetics on the supramolecular structure of reagents

Kinetics of methyl tertiary butyl ether synthesis catalyzed by ion exchange resin

AbstractThis paper presents the results of an experimental investigation of the kinetics of liquid phase reaction between methanol and isobutene, catalyzed by an acidic ion‐exchange resin, to form methyl tertiary butyl ether (MTBE). A one litre Parr batch reactor was used. Experiments were carried out at 70, 80, 90 and 100°C and at pressures sufficient to maintain liquid phase at those temperatures. Initial methanol/isobutene mole ratios of 1.0 and 2.0 were used. The catalyst amount was also varied.These kinetic data were used to model the reaction kinetics, by non‐linear least squares regression technique. The reaction was found to follow Rideal‐Eley kinetics. The values of the rate constants are reported.

Abstraction of chlorine atoms from chloroalkanes. III. The kinetics of liquid phase reactions of trichlorosilyl radicals with chloromethanes

AbstractThe kinetics of chlorine atom abstraction from the chloromethanes (ClM), CCl4, CHCl3, CH2Cl2, and CH3Cl by radiolytically generated trichlorosilyl radicals was studied in the liquid phase by a competitive method. Arrhenius parameters of chlorine atom abstraction from chloromethanes relative to that of bromine atom abstraction from cyclohexyl bromide (RBr) were as follows: equation image The error limits are two standard deviations (2σ) from least mean square Arrhenius plots. From the linear correlation between Ecl values derived from the reactions of SiCl3 and cyclohexyl radicals with the ClM series it is estimated that Ecl (R + CH3Cl) ≃ 16 kcal/mole. In addition the relative Arrhenius parameters for the hydrogen atom abstraction from SiHCl3 and chlorine atom abstraction from CCl4 by cyclohexyl radicals were obtained log AH/Acl = 0.12 ± 0.15 and EH − Ecl = 0.24 ± 0.26. The EH − Ecl value was combined with existing data on E(R + CCl4) to yield the EH(R + SiHCl3) value.

π-complexes from radicals and their role in liquid phase reaction kinetics

π-complexes from radicals and their role in liquid phase reaction kinetics

Low Temperature Infrared Cell for Reaction Kinetic Studies

In connection with the research program of this laboratory, it was attempted to apply infrared spectrophotometry to the study of the kinetics of liquid phase reactions at low temperature. Several low temperature cells have been described, for example (1), but are not applicable for low boiling liquids when they are introduced at room temperature. An apparatus has been developed which allows a continuous circulation of a liquid reaction mixture from a reactor to the absorption cell at a low temperature. The apparatus can be fitted into the sample space of the Perkin-Elmer Infrared Spectrophotometer, Model 21.