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High pressure differential scanning calorimetry of the hydrothermal salt solutions K2SO4–Na2SO4–H2O and K2HPO4–H2O

机译:水热盐溶液K2SO4-Na2SO4-H2O和K2HPO4-H2O的高压差扫描量热法

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Aqueous salt solutions under hydrothermal conditions play an important role in geochemistry as well as in processes using hot compressed water as the process medium such as supercritical water oxidation (SCWO) and supercritical water gasification (SCWG). Isochoric high pressure differential scanning calorimetry (HP-DSC) was used as an accurate technique to investigate the phase behavior of such solutions under hydrothermal conditions. New data in the low concentration range (0.14–15.0 mass%) has been collected for the binary systems K _(2) SO _(4) –H _(2) O, Na _(2) SO _(4) –H _(2) O and K _(2) HPO _(4) –H _(2) O. Furthermore we have discovered a liquid–liquid immiscibility in the ternary system K _(2) SO _(4) –Na _(2) SO _(4) –H _(2) O, which has not been reported before.
机译:水热条件下的水溶液在地球化学中起重要作用以及使用热压缩水作为过程介质如超临界水氧化(SCWO)和超临界水气化(SCWG)的过程中的重要作用。等因素高压差示扫描量热法(HP-DSC)用作精确的技术,以研究水热条件下这种溶液的相位行为。对于二元系统K _(2)所以_(4)-H _(2)O,NA _(2)所以_(4) - (4),已经收集了低浓度范围(0.14-15.0质量%)的新数据。(4)所以_(4) - H _(2)o和k _(2)HPO _(4)-H _(2)O.此外,我们在三元体系K _(2)所以_(4)-NA中发现了液体 - 液体不混溶性_(2)所以_(4)-H _(2)o之前尚未报告。

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