Enthalpy of dissolution and thermal dehydration of calcium oxalate hydrates

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39899527" target="_blank" >RIV/00216275:25310/15:39899527 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s10973-014-4350-x" target="_blank" >http://dx.doi.org/10.1007/s10973-014-4350-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-014-4350-x" target="_blank" >10.1007/s10973-014-4350-x</a>

Result language

angličtina

Original language name

Enthalpy of dissolution and thermal dehydration of calcium oxalate hydrates

Original language description

The enthalpies of dissolution of calcium oxalate hydrates at 25 A degrees C were calculated from indirect calorimetric experiments requiring three easy measurable reactions. The first reaction was dissolution of calcium oxalate hydrates in hydrochloric acid, dissolution of sodium oxalate in hydrochloric acid was used as the second, and dissolution of sodium oxalate in tetramethylammonium chloride as the last one. The results Delta(diss) H = 21.1, 20.8 and 31.7 kJ mol(-1) correspond to mono-, di- and trihydrate form. Dehydration enthalpy of these hydrates was determined by DSC method in the temperature range of 20-300 A degrees C. Corresponding values of Delta(deh) H for dehydration of 1, 2 and 3 mol of water from calcium oxalates are 66.5, 83.6 and 143.9 kJ mol(-1). The estimation of enthalpy of formation from DSC experiments gives values -1,984 and -2,296 kJ mol(-1) for calcium oxalate dihydrate and trihydrate, respectively. The enthalpy contribution of the water in the calcium oxalat

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

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Volume of the periodical

119

Issue of the periodical within the volume

3

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

2063-2068

UT code for WoS article

000350225500056

EID of the result in the Scopus database

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