Polymorphism of anhydrous oxalic acid unravelled

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00542947" target="_blank" >RIV/68378271:_____/21:00542947 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/21:43922432
Result on the web
<a href="https://doi.org/10.1016/j.jct.2021.106488" target="_blank" >https://doi.org/10.1016/j.jct.2021.106488</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jct.2021.106488" target="_blank" >10.1016/j.jct.2021.106488</a>

Result language
angličtina
Original language name
Polymorphism of anhydrous oxalic acid unravelled
Original language description
Despite being a very common compound in the industry as well as in the nature, the thermodynamic description of oxalic acid is far from being complete and reliable. The literature is contradictory considering both preparation of the two known polymorphs and the triple point temperature above which β-form should be more stable. The published vapour pressure data for α-phase show also a considerable disagreement. In this work, the polymorphs of anhydrous oxalic acid are subjected to a combined thermodynamic and X-ray diffraction study since a single technique cannot give an exhaustive answer on the phase behaviour of the compound. The simultaneous correlation procedure that combines vapour pressure data, calorimetric phase-transition properties, and heat capacities of the crystalline and ideal-gas phase is used to develop a consistent thermodynamic description. Finally, the triple point temperature and transition enthalpy are derived.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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