EXCESS MOLAR ENTHALPIES OF AN ALKANOL PLUS A BRANCHED-CHAIN ETHER AT THE TEMPERATURE 298.15 K

被引:24
作者
LETCHER, TM
GOVENDER, PU
机构
[1] Department of Chemistry and Applied Chemistry, University of Natal, Durban 4001, King George V Avenue
关键词
D O I
10.1021/je00020a060
中图分类号
O414.1 [热力学];
学科分类号
摘要
Excess molar enthalpies H-m(E) measured at 298.15 K in a flow calorimeter are reported for 12 mixtures of methanol or ethanol or propan-1-ol or propan-2-ol + bis(1-methylethyl) ether (IPE) or 1,1-dimethylethyl methyl ether (TBME) or 1,1-dimethylpropyl methyl ether (TAME). For all of the systems investigated, except the methanol mixtures, H-m(E) is positive over the whole mole fraction range and increases in the order methanol < ethanol < propan-1-ol < propan-2-ol. Small exothermic H-m(E) values are obtained for methanol + bis(1-methylethyl) ether or 1,1-dimethylethyl methyl ether or 1,1-dimethylpropyl methyl ether at high methanol mole fractions. The results are explained in terms of the strong self-association of the alkanol and the cross-association of the ether oxygen and the hydroxyl alcohol group.
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页码:997 / 1000
页数:4
相关论文
共 21 条
[1]   VAPOR-LIQUID-EQUILIBRIA OF HYDROCARBONS AND TERT-AMYL METHYL-ETHER [J].
ANTOSIK, M ;
SANDLER, SI .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1994, 39 (03) :584-587
[2]   EXCESS ENTHALPY AND LIQUID LIQUID EQUILIBRIUM SURFACES FOR THE CYCLOHEXANE-2-PROPANOL WATER-SYSTEM FROM 293.15-K TO 323.15-K [J].
BATTLER, JR ;
CLARK, WM ;
ROWLEY, RL .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1985, 30 (03) :254-259
[3]   HEAT OF MIXING OF ISOPROPYL ALCOHOL IN BINARY SYSTEMS CONTAINING CARBON TETRACHLORIDE, DIISOPROPYL ETHER, AND POLY-(PROPYLENE OXIDE) [J].
BLANKS, RF ;
PRAUSNITZ, JM .
JOURNAL OF PHYSICAL CHEMISTRY, 1963, 67 (05) :1154-&
[4]   TEMPERATURE-DEPENDENCE OF EXCESS THERMODYNAMIC PROPERTIES OF ETHANOL + NORMAL-HEPTANE AND 2-PROPANOL + NORMAL-HEPTANE SOLUTIONS [J].
BROWN, GN ;
ZIEGLER, WT .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1979, 24 (04) :319-330
[5]  
CHRISTIANSEN JJ, 1982, HDB HEATS MIXING
[6]  
CHRISTIANSEN JJ, 1988, HDB HEATS MIXING
[7]   INTERMOLECULAR FORCES IN SOLUTION AND LATTICE ENERGIES OF IONIC-CRYSTALS - CALORIMETRIC EXPERIMENTS FOR THE PHYSICAL-CHEMISTRY UNDERGRADUATE LABORATORY [J].
DIOGO, HP ;
DAPIEDADE, MFM ;
RAMOS, JJM ;
SIMONI, JA ;
SIMOES, JAM .
JOURNAL OF CHEMICAL EDUCATION, 1993, 70 (09) :A227-&
[8]   HEAT-CAPACITIES AND DENSITIES OF MIXTURES OF VERY POLAR SUBSTANCES .3. MIXTURES CONTAINING EITHER TRICHLOROMETHANE OR 1,4-DIOXANE OR DIISOPROPYLETHER [J].
GROLIER, JPE ;
ROUXDESGRANGES, G ;
BERKANE, M ;
WILHELM, E .
JOURNAL OF SOLUTION CHEMISTRY, 1994, 23 (02) :153-166
[9]   A NEW THEORETICAL APPROACH FOR PREDICTING EXCESS PROPERTIES OF ALKANOL ALKANE MIXTURES [J].
HEINTZ, A .
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1985, 89 (02) :172-181
[10]   THE EXCESS-ENTHALPIES OF (TRIBUTYLAMINE PLUS AN ETHER) AT THE TEMPERATURE 298.15-K [J].
LETCHER, TM ;
DOMANSKA, U .
JOURNAL OF CHEMICAL THERMODYNAMICS, 1994, 26 (05) :553-560