Volumes and heat capacities of ternary aqueous systems at 25.degree.C. Mixtures of urea, tert-butyl alcohol, dimethylformamide, and water

1977 ◽  
Vol 99 (18) ◽  
pp. 5894-5900 ◽  
Author(s):  
Cees De Visser ◽  
Gerald Perron ◽  
Jacques E. Desnoyers
Keyword(s):  
Butyl Alcohol ◽  
Heat Capacities ◽  
Aqueous Systems ◽  
Tert Butyl ◽  
Tert Butyl Alcohol

Enthalpies, heat capacities, and volumes of transfer of the tetrabutylammonium ion from water to aqueous mixed solvents from the point of view of the scaled-particle theory

1976 ◽  
Vol 54 (23) ◽  
pp. 3800-3808 ◽  
Author(s):  
Nicole Desrosiers ◽  
Jacques E. Desnoyers
Keyword(s):  
Mixed Solvents ◽  
Butyl Alcohol ◽  
Heat Capacities ◽  
Point Of View ◽  
Scaled Particle Theory ◽  
Particle Theory ◽  
Tert Butyl ◽  
Tetrabutylammonium Ion ◽  
Tert Butyl Alcohol ◽  
Alcohol Water

The enthalpies, heat capacities, and volumes of transfer of the tetrabutylammonium ion from water to urea–water, tert-butyl alcohol–water, and sodium chloride–water mixtures have been calculated at 25 °C using the scaled-particle theory. In general, the signs, magnitudes, and overall trends in the cosolvent concentration dependence of the properties are predicted from the cavity contributions only. These calculations are found to be very sensitive to the diameters chosen for the various species.For these calculations it was necessary to measure with a dilatometer the coefficients of thermal expansion of tert-butyl alcohol–water mixtures as a function of concentration and temperature.

The heat capacities, volumes, and expansibilities of tert-butyl alcohol – water mixtures from 6 to 65 °C

1977 ◽  
Vol 55 (5) ◽  
pp. 856-862 ◽  
Author(s):  
Cees de Visser ◽  
Gerald Perron ◽  
Jacques E. Desnoyers
Keyword(s):  
Microphase Separation ◽  
Butyl Alcohol ◽  
Heat Capacities ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water ◽  
Order Of Magnitude ◽  
Hydrophobic Solutes ◽  
High Concentrations ◽  
Specific Heat Capacities

The densities and specific heat capacities of mixtures of tert-butyl alcohol (TBA) and water (W) have been measured at 6, 10, 25, 40, 55, and 65 °C. From these data the apparent molal volumes[Formula: see text], heat capacities[Formula: see text], and expansibilities [Formula: see text] were evaluated. Generally, the temperature dependence of these quantities is rather characteristic of hydrophobic solutes in water. At high concentrations [Formula: see text]and [Formula: see text] resemble those of surfactants, suggesting the existence of some microphase separation. At low temperatures [Formula: see text] show a significant hump as a function of concentration, which is probably not due to the presence of the —OH group on the TBA molecule. A similar behaviour is observed for[Formula: see text]. The [Formula: see text] and [Formula: see text] of water in TBA have also been calculated; [Formula: see text] is in theTBA-rich region 2 to 2.5 cm3 mol−1 smaller than the molar volume of water, but [Formula: see text] is of the same order of magnitude as the molar heat capacity of water.

Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures

1993 ◽  
Vol 58 (5) ◽  
pp. 1001-1006 ◽  
Author(s):  
Oľga Vollárová ◽  
Ján Benko
Keyword(s):  
Transfer Functions ◽  
Activation Parameters ◽  
Butyl Alcohol ◽  
Oxidation Of Co ◽  
Kinetics Of Oxidation ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Mixtures ◽  
Kinetics Of

The kinetics of oxidation of [Co(en)2SCH2COO]+ with S2O82- was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in the reaction activation parameters ∆H≠ and ∆S≠ with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of salvation effects. The solvation effect on the reaction is discussed based on a comparison of the transfer functions ∆Ht0, ∆St0 and ∆Gt0 for the initial and transition states with the changes in the activation parameters accompanying changes in the CO-solvent concentration. The transfer enthalpies of the reactant were obtained from calorimetric measurements.

scholarly journals Impacts of Sn(II) doping on the Keggin heteropolyacid-catalyzed etherification of glycerol with tert-butyl alcohol

2021 ◽  
pp. 116913
Author(s):  
Márcio José da Silva ◽  
Diego Morais Chaves ◽  
Sukarno Olavo ferreira ◽  
Rene Chagas da Silva ◽  
Jose Balena Gabriel Filho ◽  
...  
Keyword(s):  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol

Selective synthesis of 2,5-dimethyl-2,4-hexadiene by condensation of iso-butyl aldehyde with tert-butyl alcohol over molecular sieve catalysts

2004 ◽  
Vol 5 (1) ◽  
pp. 41-43 ◽  
Author(s):  
Hua Wang ◽  
Zhongmin Liu ◽  
Chenglin Sun ◽  
Gongwei Wang
Keyword(s):  
Molecular Sieve ◽  
Butyl Alcohol ◽  
Selective Synthesis ◽  
Tert Butyl ◽  
Tert Butyl Alcohol

Solubility of tert-Butyl Hypochlorite in tert-Butyl Alcohol-Water

1954 ◽  
Vol 46 (6) ◽  
pp. 59-59
Author(s):  
J Westwater ◽  
L Audrieth
Keyword(s):  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water
Sign in / Sign up

Export Citation Format

Share Document