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The structure and thermochemistry of K2CO3–MgCO3 glass

Abstract:

Carbonate glasses can be formed routinely in the system K2CO3–MgCO3. The enthalpy of formation for one such 0.55K2CO3–0.45MgCO3 glass was determined at 298 K to be 115.00 ± 1.21 kJ/mol by drop solution calorimetry in molten sodium molybdate (3Na2O·MoO3) at 975 K. The corresponding heat of formation from oxides at 298 K was −261.12 ± 3.02 kJ/mol. This ternary glass is shown to be slightly metastable with respect to binary crystalline components (K2CO3 and MgCO3) and may be further stabilized b...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1557/jmr.2019.250

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Oxford college:
Brasenose College
Role:
Author
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Name:
Engineering and Physical Sciences Research Council
Funding agency for:
Wilson, M
Grant:
EP/L015722/1
Publisher:
Cambridge University Press
Journal:
Journal of Materials Research More from this journal
Volume:
34
Issue:
19
Pages:
3377-3388
Publication date:
2019-09-16
Acceptance date:
2019-08-01
DOI:
ISSN:
2044-5326
Pubs id:
pubs:1037301
UUID:
uuid:a9dc1f34-7e59-4bd5-a28b-0ca2d50a6117
Local pid:
pubs:1037301
Source identifiers:
1037301
Deposit date:
2019-08-02

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