Low temperature heat capacity and thermodynamic functions of anion bearing sodalites Na8Al6Si6O24X2 (X = SO4, ReO4, Cl, I)

被引：9

作者：

Schliesser, Jacob ^{[1
]}

Lilova, Kristina ^{[2
,3
]}

Pierce, Eric M. ^{[4
]}

Wu, Lili ^{[2
,3
]}

Missimer, David M. ^{[5
]}

Woodfield, Brian F. ^{[1
]}

Navrotsky, Alexandra ^{[2
,3
]}

机构：

[1] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA

[2] Univ Calif Davis, Peter A Rock Thermochem Lab, Davis, CA 95616 USA

[3] Univ Calif Davis, NEAT ORU, Davis, CA 95616 USA

[4] Oak Ridge Natl Lab, Environm Sci Div, POB 2008,MS 6038, Oak Ridge, TN 37831 USA

[5] Savannah River Natl Lab, Analyt Dev Ctr, Aiken, SC 29808 USA

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2017年 / 114卷

关键词：

Heat capacity; Gibbs energy; Entropy; Sodalite; Radioactive waste; CERAMIC WASTE FORM; PERRHENATE; RELEASE; SIZE;

D O I：

10.1016/j.jct.2017.05.035

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat capacities of sulfate, perrhenate, chloride, and iodide sodalites with the ideal formula Na8Al6Si6O24X2 (X = SO4, ReO4, Cl, I) were measured from 2 K to 300 K using a Quantum Design Physical Property Measurement System (PPMS). From the heat capacity data, the standard thermodynamic functions were determined. All four sodalites undergo a phase transition below room temperature for which thermodynamic parameters were determined. Additionally, the heat capacity of one of the constituent compounds (NaReO4) was measured. (C) 2017 Elsevier Ltd.

引用

页码：14 / 24

页数：11

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