Redetermination of the transformation enthalpies of the xanthoconite–proustite, pyrostilpnite–pyrargyrite and trechmannite–smithite phase transitions |
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Authors: | B Meyer F Scholz |
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Institution: | Institut für Chemie, Humboldt-Universit?t zu Berlin, Hessische Stra?e 1–2, D-10115 Berlin, Germany, DE
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Abstract: | We report here refined values of the transformation enthalpy for xanthoconite to proustite (54.81 kJ/mol) and pyrostilpnite
to pyrargyrite (40.32 kJ/mol). Additionally, the enthalpy for the transformation of trechmannite to smithite (5.82 kJ/mol)
has been determined. The refinement was possible by taking into account a previously unknown dependence of electrochemical
signals on the amount of substance undergoing the reduction process.
Received December 21, 1995/Revised, accepted June 29, 1996 |
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