Heat capacities and thermal diffusivities of n-alkane acid ethyl esters-biodiesel fuel components / Bogatishcheva N. S.,Faizullin M. Z.,Nikitin E. D. // RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A. - 2017. - V. 91, l. 9. - P. 1647-1653.

ISSN/EISSN:

0036-0244 / 1531-863X

Type:

Article

Abstract:

The heat capacities and thermal diffusivities of ethyl esters of liquid n-alkane acids C (n) H2n-1O2C2H5 with the number of carbon atoms in the parent acid n = 10, 11, 12, 14, and 16 are measured. The heat capacities are measured using a DSC 204 F1 Phoenix heat flux differential scanning calorimeter (Netzsch, Germany) in the temperature range of 305-375 K. Thermal diffusivities are measured by means of laser flash method on an LFA-457 instrument (Netzsch, Germany) at temperatures of 305-400 K. An equation is derived for the dependence of the molar heat capacities of the investigated esters on temperature. It is shown that the dependence of molar heat capacity C (p,m) (298.15 K) on n (n = 1-6) is close to linear. The dependence of thermal diffusivity on temperature in the investigated temperature range is described by a first-degree polynomial, but thermal diffusivity a (298.15 K) as a function of n has a minimum at n = 5.

Author keywords:

heat capacity; thermal diffusivity; measurement; ethyl esters; n-alkane acids LIQUID CRITICAL PROPERTIES; CARBOXYLIC-ACIDS; PRESSURE

DOI:

10.1134/S0036024417090084

Web of Science ID:

ISI:000408432000005

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1531-863X
Keywords-Plus	LIQUID CRITICAL PROPERTIES; CARBOXYLIC-ACIDS; PRESSURE
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	Bogatishcheva@mail.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}14-08-00242]; Comprehensive Program for Basic Research, Ural Branch, Russian Academy of Sciences {[}15-1-2-6]
Funding-Text	This work was financially supported by the Russian Foundation for Basic Research, project no. 14-08-00242; and by the Comprehensive Program for Basic Research, Ural Branch, Russian Academy of Sciences, project no. 15-1-2-6.
Number-of-Cited-References	25
Journal-ISO	Russ. J. Phys. Chem. A
Doc-Delivery-Number	FE8CA