Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate

This paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperat...

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Main Authors:	Kangrui Sun, Panpan Li, Long Li, Yafei Guo, Tianlong Deng
Format:	Article
Language:	English
Published:	Hindawi Limited 2020-01-01
Series:	Journal of Chemistry
Online Access:	http://dx.doi.org/10.1155/2020/5198374

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spelling	doaj-01752dd672ee4c5199b27aaa695417e82020-11-24T21:41:56ZengHindawi LimitedJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/51983745198374Heat Capacity and Thermodynamic Properties of Cesium Pentaborate TetrahydrateKangrui Sun0Panpan Li1Long Li2Yafei Guo3Tianlong Deng4Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaThis paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperature was fitted to a polynomial equation of Cp,m (J·mol−1·K−1) = 618.07702 + 39.52669[T − (Tmax + Tmin)/2]/(Tmax − Tmin)/2] − 3.46888[(T − (Tmax + Tmin)/2)/(Tmax − Tmin)/2]2 + 7.9441[(T − (Tmax+ Tmin)/2)/(Tmax − Tmin)/2]3. The relevant thermodynamic functions of enthalpy (HT − H298.15), entropy (ST − S298.15), and Gibbs free energy (GT − G298.15) of cesium pentaborate tetrahydrate from 298 to 375 K of 5 K intervals are also obtained on the basis of relational expression equations between thermodynamic functions and the molar heat capacity.http://dx.doi.org/10.1155/2020/5198374
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng
spellingShingle	Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate Journal of Chemistry
author_facet	Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng
author_sort	Kangrui Sun
title	Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
title_short	Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
title_full	Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
title_fullStr	Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
title_full_unstemmed	Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
title_sort	heat capacity and thermodynamic properties of cesium pentaborate tetrahydrate
publisher	Hindawi Limited
series	Journal of Chemistry
issn	2090-9063 2090-9071
publishDate	2020-01-01
description	This paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperature was fitted to a polynomial equation of Cp,m (J·mol−1·K−1) = 618.07702 + 39.52669[T − (Tmax + Tmin)/2]/(Tmax − Tmin)/2] − 3.46888[(T − (Tmax + Tmin)/2)/(Tmax − Tmin)/2]2 + 7.9441[(T − (Tmax+ Tmin)/2)/(Tmax − Tmin)/2]3. The relevant thermodynamic functions of enthalpy (HT − H298.15), entropy (ST − S298.15), and Gibbs free energy (GT − G298.15) of cesium pentaborate tetrahydrate from 298 to 375 K of 5 K intervals are also obtained on the basis of relational expression equations between thermodynamic functions and the molar heat capacity.
url	http://dx.doi.org/10.1155/2020/5198374
work_keys_str_mv	AT kangruisun heatcapacityandthermodynamicpropertiesofcesiumpentaboratetetrahydrate AT panpanli heatcapacityandthermodynamicpropertiesofcesiumpentaboratetetrahydrate AT longli heatcapacityandthermodynamicpropertiesofcesiumpentaboratetetrahydrate AT yafeiguo heatcapacityandthermodynamicpropertiesofcesiumpentaboratetetrahydrate AT tianlongdeng heatcapacityandthermodynamicpropertiesofcesiumpentaboratetetrahydrate
_version_	1716664932062199808

Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate

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