發(fā)布時(shí)間：2018-06-06 01:42

  本文選題：酒石酸鈉二水合物 + 乙醇-水混合溶劑��； 參考：《化學(xué)工程》2017年12期

【摘要】：用動(dòng)態(tài)法測(cè)定了酒石酸鈉二水合物在不同質(zhì)量配比的乙醇-水混合溶劑中的溶解度,以期為酒石酸鈉二水合物提供結(jié)晶熱力學(xué)數(shù)據(jù)。結(jié)果表明:酒石酸鈉二水合物在乙醇-水混合溶劑中的溶解度隨水質(zhì)量分?jǐn)?shù)和溫度的增加而增加,但隨著水質(zhì)量分?jǐn)?shù)的增加,升高溫度對(duì)酒石酸鈉溶解度的增加量逐漸變小。采用Modified Apelblat,Van't-JA及Apel-JA方程對(duì)溶解度數(shù)據(jù)進(jìn)行了關(guān)聯(lián),均方根偏差最大為6.24×10~(-4)。所選熱力學(xué)方程均能很好的關(guān)聯(lián)溶解度數(shù)據(jù),其中Modified Apelblat方程的關(guān)聯(lián)效果最好。此外,采用Van't Hoff方程計(jì)算了酒石酸鈉二水合物在乙醇-水混合溶劑中的表觀溶解熱力學(xué)數(shù)據(jù),數(shù)據(jù)表明其溶解過(guò)程為非自發(fā)的吸熱過(guò)程。
[Abstract]:The solubility of sodium tartrate dihydrate in ethanol-water mixed solvents with different mass ratios was determined by dynamic method in order to provide thermodynamic data of crystallization for sodium tartrate dihydrate. The results show that the solubility of sodium tartrate dihydrate in ethanol-water mixed solvent increases with the increase of water mass fraction and temperature, but the increase of sodium tartrate solubility decreases with the increase of water mass fraction. The solubility data were correlated by Modified Apelblatine Vant-JA and Apel-JA equations. The maximum root mean square deviation was 6.24 脳 10 ~ (-1) ~ (-4) ~ (-1). The selected thermodynamic equations can correlate the solubility data well, and Modified Apelblat equation has the best correlation effect. In addition, the thermodynamic data of the apparent dissolution of sodium tartrate dihydrate in ethanol-water mixed solvents were calculated by Van't Hoff equation. The results show that the dissolution process is a non-spontaneous endothermic process.
【作者單位】： 河南工業(yè)大學(xué)化學(xué)化工學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(21206032) 高校青年骨干教師項(xiàng)目(2015GGJS-039) 河南工業(yè)大學(xué)人才基金(2016BS025)
【分類號(hào)】：O645.12

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