当前位置：
X-MOL 学术
›
J. Chem. Eng. Data
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Solubility, Phase Equilibria, and Critical Phenomena in the Ternary KBr + H2O + C5H5N System from T = 283.15 to 363.15 K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2022-01-07 , DOI: 10.1021/acs.jced.1c00753 Dmitry G. Cherkasov 1 , Veronica V. Danilina 1 , Konstantin K. Il’in 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2022-01-07 , DOI: 10.1021/acs.jced.1c00753 Dmitry G. Cherkasov 1 , Veronica V. Danilina 1 , Konstantin K. Il’in 1
Affiliation
|
The solubility of components, phase equilibria, and critical phenomena in the potassium bromide + water + pyridine system were investigated from T = 283.15 to 363.15 K by the visual polythermal method. KBr delaminates water–pyridine solutions above 323.75 K. The formation temperature of the critical tie line of the monotectic state (323.75 K) and the compositions of the solutions corresponding to the critical solubility points of liquid–liquid equilibrium at three temperatures were determined. The distribution coefficients Kd of pyridine between the organic and aqueous phases of the monotectic state at 328.15, 343.15, and 363.15 K were calculated. The salting-out effect of KBr relative to pyridine from solutions is shown to be enhanced with an increase in the temperature. A comparative analysis of the results of our polythermal study of the salting-out action of potassium salts (iodide, bromide, nitrate, and chloride) on the binary water + pyridine system was done. It has been found that a decrease in the crystallographic radius of the salt anion in the KI–KBr–KNO3–KCl series leads to a decreased formation temperature of the critical tie line of the monotectic state of the ternary salt + water + pyridine systems and an enhanced salting-out effect of pyridine from aqueous solutions.
中文翻译：
从 T = 283.15 到 363.15 K 的三元 KBr + H2O + C5H5N 系统中的溶解度、相平衡和临界现象
采用视觉多热法研究了T =283.15~363.15 K范围内溴化钾+水+吡啶体系中组分的溶解度、相平衡和临界现象。KBr 在 323.75 K 以上使水-吡啶溶液分层。确定了单晶态临界连接线的形成温度 (323.75 K) 和对应于三个温度下液-液平衡临界溶解度点的溶液组成。分配系数K d计算了在 328.15、343.15 和 363.15 K 下单晶态的有机相和水相之间的吡啶含量。KBr 相对于溶液中的吡啶的盐析效果随着温度的升高而增强。我们对钾盐（碘化物、溴化物、硝酸盐和氯化物）对二元水+吡啶体系的盐析作用的多热研究结果进行了比较分析。已经发现，KI-KBr-KNO 3 -KCl系列中盐阴离子晶体半径的减小导致三元盐+水+吡啶体系的单晶态临界连接线的形成温度降低并增强了吡啶从水溶液中的盐析作用。
更新日期：2022-02-10
中文翻译：
从 T = 283.15 到 363.15 K 的三元 KBr + H2O + C5H5N 系统中的溶解度、相平衡和临界现象
采用视觉多热法研究了T =283.15~363.15 K范围内溴化钾+水+吡啶体系中组分的溶解度、相平衡和临界现象。KBr 在 323.75 K 以上使水-吡啶溶液分层。确定了单晶态临界连接线的形成温度 (323.75 K) 和对应于三个温度下液-液平衡临界溶解度点的溶液组成。分配系数K d计算了在 328.15、343.15 和 363.15 K 下单晶态的有机相和水相之间的吡啶含量。KBr 相对于溶液中的吡啶的盐析效果随着温度的升高而增强。我们对钾盐（碘化物、溴化物、硝酸盐和氯化物）对二元水+吡啶体系的盐析作用的多热研究结果进行了比较分析。已经发现，KI-KBr-KNO 3 -KCl系列中盐阴离子晶体半径的减小导致三元盐+水+吡啶体系的单晶态临界连接线的形成温度降低并增强了吡啶从水溶液中的盐析作用。
京公网安备 11010802027423号