The standard enthalpies of formation of proline stereoisomers

被引：15
|
作者：
Contineanu, Iulia [2 ]
Neacsu, Ana [2 ]
Zgirian, Roxana [1 ]
Tanasescu, Speranta [2 ]
Perisanu, Stefan [1 ]
机构：
[1] Univ Politehn Bucuresti, Fac Appl Chem & Mat Sci, Bucharest 011061, Romania
[2] Inst Phys Chem, Bucharest 060021, Romania
来源：
THERMOCHIMICA ACTA | 2012年 / 537卷
关键词：
Proline; Racemic; Enthalpy of combustion; Formation; Decomposition; DSC; Zwitterion; AMINO-ACIDS; COMBUSTION; PYROLYSIS; ISOMERS; OXYGEN;
D O I：
10.1016/j.tca.2012.02.035
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The combustion calorimetry and differential scanning calorimetry (DSC) techniques have been employed in order to obtain the thermochemical properties of L-, D-enantiomers and racemic mixture of proline. The large negative values of the enthalpies of formation of the investigated compounds reveal their high stability. The thermal behavior of the compounds was studied by means of DSC in the temperature range between ambient and 250 degrees C. A combined transformation-melting and decomposition is occurring on heating. The decomposition mechanism is discussed in relationship with the data obtained by means of DSC. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：31 / 35
页数：5
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