Thermochemistry of Hf-zirconolite, CaHfTi2O7

Robert L. Putnam; Alexandra Navrotsky; Brian F. Woodfield; Jennifer L. Shapiro; Rebecca Stevens; Juliana Boerio-Goates

doi:10.1557/proc-556-11

Thermochemistry of Hf-zirconolite, CaHfTi₂O₇

Robert L. Putnam, Alexandra Navrotsky, Brian F. Woodfield, Jennifer L. Shapiro, Rebecca Stevens, Juliana Boerio-Goates

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

The formation enthalpy, -3752.3±4.7 kJ·mol^-1, of Hf-zirconolite, CaHfTi₂O₇, was obtained using high temperature oxide-melt solution calorimetry. Combined with heat capacity data obtained using low temperature adiabatic calorimetry we report the heat capacity (Cp) and the standard molar formation energetics (ΔH°_{f, elements}, ΔS°_T, and ΔG°_{f, elements}) for Hf-zirconolite from T = 298.15 K to T = 1500 K. Comparison of Hf-zirconolite with Zr-zirconolite is made.

Original language	English (US)
Pages (from-to)	11-18
Number of pages	8
Journal	Materials Research Society Symposium - Proceedings
Volume	556
DOIs	https://doi.org/10.1557/proc-556-11
State	Published - 1999
Externally published	Yes
Event	Proceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' - Boston, MA, USA Duration: Nov 30 1998 → Dec 4 1998

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{347b074671274941ad7846852b1a7dea,

title = "Thermochemistry of Hf-zirconolite, CaHfTi2O7",

abstract = "The formation enthalpy, -3752.3±4.7 kJ·mol-1, of Hf-zirconolite, CaHfTi2O7, was obtained using high temperature oxide-melt solution calorimetry. Combined with heat capacity data obtained using low temperature adiabatic calorimetry we report the heat capacity (Cp) and the standard molar formation energetics (ΔH°f, elements, ΔS°T, and ΔG°f, elements) for Hf-zirconolite from T = 298.15 K to T = 1500 K. Comparison of Hf-zirconolite with Zr-zirconolite is made.",

author = "Putnam, {Robert L.} and Alexandra Navrotsky and Woodfield, {Brian F.} and Shapiro, {Jennifer L.} and Rebecca Stevens and Juliana Boerio-Goates",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; Proceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' ; Conference date: 30-11-1998 Through 04-12-1998",

year = "1999",

doi = "10.1557/proc-556-11",

language = "English (US)",

volume = "556",

pages = "11--18",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

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TY - JOUR

T1 - Thermochemistry of Hf-zirconolite, CaHfTi2O7

AU - Putnam, Robert L.

AU - Navrotsky, Alexandra

AU - Woodfield, Brian F.

AU - Shapiro, Jennifer L.

AU - Stevens, Rebecca

AU - Boerio-Goates, Juliana

PY - 1999

Y1 - 1999

N2 - The formation enthalpy, -3752.3±4.7 kJ·mol-1, of Hf-zirconolite, CaHfTi2O7, was obtained using high temperature oxide-melt solution calorimetry. Combined with heat capacity data obtained using low temperature adiabatic calorimetry we report the heat capacity (Cp) and the standard molar formation energetics (ΔH°f, elements, ΔS°T, and ΔG°f, elements) for Hf-zirconolite from T = 298.15 K to T = 1500 K. Comparison of Hf-zirconolite with Zr-zirconolite is made.

AB - The formation enthalpy, -3752.3±4.7 kJ·mol-1, of Hf-zirconolite, CaHfTi2O7, was obtained using high temperature oxide-melt solution calorimetry. Combined with heat capacity data obtained using low temperature adiabatic calorimetry we report the heat capacity (Cp) and the standard molar formation energetics (ΔH°f, elements, ΔS°T, and ΔG°f, elements) for Hf-zirconolite from T = 298.15 K to T = 1500 K. Comparison of Hf-zirconolite with Zr-zirconolite is made.

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U2 - 10.1557/proc-556-11

DO - 10.1557/proc-556-11

M3 - Conference article

AN - SCOPUS:0033355377

SN - 0272-9172

VL - 556

SP - 11

EP - 18

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII'

Y2 - 30 November 1998 through 4 December 1998

ER -

Thermochemistry of Hf-zirconolite, CaHfTi₂O₇

Abstract

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