42160-79-2Relevant academic research and scientific papers
Retention Indices and Sorption Enthalpies of Pentaerythritol and С2–С8 Acid Esters on Nonpolar Stationary Phases
Emel’yanov, V. V.,Krasnykh, E. L.,Portnova, S. V.
, p. 2168 - 2176 (2020/10/08)
Abstract: The retention and sorption enthalpy characteristics of 38 pentaerythritol esters of C2–C8 carboxylic acids of different structures were determined by gas-liquid chromatography on a nonpolar phase in the temperature range 433.2–563.2 K. The molecular structure was shown to affect the temperature dependence of the retention indices of the esters. The average change in the sorption enthalpy of pentaerythritol tetraesters per CH2 group is lower in magnitude than the similar contribution for normal alkanes. The excess mixing enthalpy at 298.2 K was evaluated for four fully substituted pentaerythritol esters.
COMPOSITION OF THE PRODUCTS OF THERMOLYSIS OF PENTAERYTHRITOL TETRACAPROATE.
Yutina,Gromova,Zenkevich,Egor'kov
, p. 1901 - 1906 (2007/10/02)
For elucidation of the mechanism of thermolysis of neopolyol esters the authors have investigated the composition of the products of thermolysis of a model compound, pentaerythritol tetracaproate (PETC). This model compound corresponds to the average molecule of the synthetic basic lubricant 'ester-2. ' It is shown that the composition of thermolysis products obtained from the pentaerythritol ester does not vary qualitatively in the range 320-260 degree . The principal products of PETC thermolysis are: carbon monoxide and dioxide, caproic acid, pentaerythritol tricaproate (incomplete ester), and pentaerythritol acetate tricaproate (asymmetric ester). According to material-balance data, the amount of identified compounds formed during thermal decomposition of PETC falls with rise of temperature from 92. 7% (320, 6 h) to 58. 1% (360 degree , 6 h) according to the carbon balance, and from 95. 2 to 71. 2% respectively according to the oxygen balance. This work is pertinent to lubricants.
