磷酸二氢钾在乙腈-水溶剂中溶解度的测定与关联

doi:10.19964/j.issn.1006-4990.2021-0135

无机盐工业 ›› 2022, Vol. 54 ›› Issue (1): 83-85.doi: 10.19964/j.issn.1006-4990.2021-0135

磷酸二氢钾在乙腈-水溶剂中溶解度的测定与关联

张焕焕(),程卓,汤秀华,张峰榛()

四川轻化工大学化学工程学院,四川自贡 643000

收稿日期:2021-03-08 出版日期:2022-01-10 发布日期:2022-03-14
作者简介:张焕焕（1995— ）,女,硕士研究生,研究方向为无机化工材料制备;E-mail: zhanghuantm@163.com。
基金资助:
国家自然科学基金资助项目(21868014)

Determination and correlation of solubility of potassium dihydrogen phosphate in acetonitrile-water solvent

ZHANG Huanhuan(),CHENG Zhuo,TANG Xiuhua,ZHANG Fengzhen()

School of Chemical Engineering,Sichuan University of Science & Engineering,Zigong 643000,China

Received:2021-03-08 Published:2022-01-10 Online:2022-03-14

摘要/Abstract

摘要：

采用静态平衡法测定了293.15~318.15 K条件下磷酸二氢钾在乙腈-水溶剂中的溶解度,采用Apelblat模型对实验数据进行拟合,计算了磷酸二氢钾的溶解焓。结果表明：Apelblat模型能较好地关联磷酸二氢钾在乙腈-水溶剂中的溶解度,回归相关系数R²大于0.97;平均相对误差小于5%;在乙腈质量分数为0~0.838时,磷酸二氢钾的溶解焓为15.12~55.30 kJ/mol。得到了适用于磷酸二氢钾-乙腈-水体系的Apelblat模型,可为磷酸二氢钾的盐析结晶工艺提供热力学数据。

关键词: 磷酸二氢钾, 乙腈, 溶解度, Apelblat模型

Abstract:

The solubility of potassium dihydrogen phosphate（KDP） in acetonitrile-water solvent was determined by the static equilibrium method in the temperature range of 293.15 K to 318.15 K.The experimental data was fitted with Apelblat model and the dissolution enthalpy of KDP was calculated.The results showed that the Apelblat model could correlate the solubility of KDP in acetonitrile-water solvent.The fitting correlation coefficient R² was above 0.97,and the average relative deviation was less than 5%.The KDP dissolution enthalpy ranging from 15.12 kJ/mol to 55.30 kJ/mol with the mass fraction of acetoni-trile varying between 0 and 0.838.The Apelblat model suitable for the system of KDP-acetonitrile-water was obtained,which could provide thermodynamic date for the salt-out crystallization process of KDP.

Key words: potassium dihydrogen phosphate, acetonitrile, solubility, Apelblat model

中图分类号:

TQ131.13

张焕焕,程卓,汤秀华,张峰榛. 磷酸二氢钾在乙腈-水溶剂中溶解度的测定与关联[J]. 无机盐工业, 2022, 54(1): 83-85.

ZHANG Huanhuan,CHENG Zhuo,TANG Xiuhua,ZHANG Fengzhen. Determination and correlation of solubility of potassium dihydrogen phosphate in acetonitrile-water solvent[J]. Inorganic Chemicals Industry, 2022, 54(1): 83-85.

图/表 6

图1

表1

图2

表2

图3

表3

参考文献 12

[1]	MUHAMMAD Saeed Akram, MUHAMMAD Ashraf. Exogenous app-lication of potassium dihydrogen phosphate can alleviate the adverse effects of salts stress on sunflower[J]. Journal of Plant Nutrition, 2011, 34:1041-1057. doi: 10.1080/01904167.2011.555585
[2]	王东头, 刘长青, 王拥军. 磷酸二氢钾在农业上的超常量施用[J]. 磷肥与复肥, 2017, 32(10):34-36.
[3]	吴宇川, 何兵兵, 薛绍秀, 等. 磷酸二氢钾的制备与应用研究进展[J]. 磷肥与复肥, 2017, 32(2):30-34.
[4]	郑雯佳, 王辛龙, 张志业, 等. 溶析结晶法制备磷酸二氢钾[J]. 磷肥与复肥, 2018, 33(5):16-18,39.
[5]	BARATA P A, SERRANO M L. Salting-out precipitation of potassi-um dihydrogen phosphate(KDP) Ⅲ.Growth process[J]. Journal of Crystal Growth, 1998, 194:101-108. doi: 10.1016/S0022-0248(98)00655-1
[6]	HAN Bing, SHA Zuoliang, PARTANENA J I, et al. Solubility of po-tassium dihydrogen phosphate in aqueous solutions of acetone,ethyl acetate,and thiourea from T=(298.15~313.15) K[J]. Fluid Phase Equilibria, 2012, 336:16-21. doi: 10.1016/j.fluid.2012.08.031
[7]	BARATA P A, SERRANO M L. Thermodynamic representation of the solubility for potassium dihydrogen phosphate(KDP)+water+alcohols systems[J]. Fluid Phase Equilibria, 1997, 141:247-263. doi: 10.1016/S0378-3812(97)00188-X
[8]	ZHOU Xiaohou, ZHENG Wenjia, XU Dehua, et al. Solubility meas-urement and thermodynamics modelling for potassium dihydrogen phosphate in a water-ethanol system from 293.2 to 323.2 K[J]. Fluid Phase Equilibria, 2020, 512.Doi: 10.1016/j.fluid.2020.112533. doi: 10.1016/j.fluid.2020.112533
[9]	雷杰. 溶析结晶法处理煤化工含Na⁺高浓盐水的研究[D]. 北京:北京化工大学, 2017.
[10]	XU Dejun, XIONG Xing, YANG Lin, et al. Determination of the so-lubility of ammonium dihydrogen phosphate in water-ethanol sy-stem at different temperatures from 283.2 to 343.2 K[J]. Journal of Chemical & Engineering Date, 2015, 61(1):78-82.
[11]	陈丽芳, 张勤勤, 林田, 等. 硼酸在氯化钙溶液中溶解度的测定与关联[J]. 无机盐工业, 2019, 51(5):70-73.
[12]	XU Renjie, ZHENG Min, ALI Farajtabar, et al. Solubility modeling and preferential solvation of adenine in solvent mixtures of (N,N-dimethylformamide,N-methyl pyrrolidone,propylene glycol and dimethyl sulfoxide) plus water[J]. The Journal of Chemical Ther-modynamics, 2018, 215:225-234.

T/K	x_lit/10^-3	x_exp/10^-3	δ/%
298.2	32.58	31.52	3.353
303.2	35.66	35.07	1.689
308.2	39.14	38.63	1.317
313.2	42.91	42.98	0.155
318.2	46.59	47.93	2.801
平均相对误差			1.863

w	A	B	C	R²	ARD/ %	RSMD/ 10^-4
0.000	-303.19	12 072.26	45.50	0.998	0.545	2.17
0.244	-362.48	14 005.05	54.65	0.971	3.483	7.28
0.463	-323.09	10 814.23	49.49	0.979	4.165	6.53
0.564	-1 137.63	46 955.44	171.06	0.987	4.266	4.75
0.838	1 265.63	-63 441.00	-186.02	0.992	3.977	0.83

w	ΔH_sol/（kJ·mol^-1）	w	ΔH_sol/（kJ·mol^-1）
0.000	15.12	0.564	43.78
0.244	22.27	0.838	55.30
0.463	35.69

[1]	冯霞, 于雪峰, 姚智豪, 罗军, 任思颖, 赵志星, 于旭东. 三元体系Na⁺（Mg²⁺），Ca²⁺∥Cl^--H₂O 278.2 K稳定相平衡研究[J]. 无机盐工业, 2024, 56(1): 47-52.
[2]	邓文清,朱静,樊小娟,陈艳,李天祥. 313.15 K下三元体系KH₂PO₄-（NH₂）₂CO-H₂O相平衡研究[J]. 无机盐工业, 2023, 55(1): 100-105.
[3]	陈帅,杨博,陈念粗,罗军,任思颖,曾英,于旭东. 三元体系NH₄Cl+MgCl₂+H₂O 323.2 K相平衡研究[J]. 无机盐工业, 2022, 54(4): 100-103.
[4]	王逸夫,金央,李军. 微尺度流动体系的介稳区测定方法及影响[J]. 无机盐工业, 2022, 54(2): 45-49.
[5]	马玉军,王晓,李淑雅,张付康,李娟. 四元体系NaCl+NaBO₂+Na₂CO₃+H₂O 298.15 K 相平衡研究[J]. 无机盐工业, 2022, 54(10): 42-46.
[6]	王斌,邓小川,史一飞,董超超,樊发英,朱朝梁,樊洁. 碳酸锂在水和NaCl-KCl溶液体系中溶解度的在线测定[J]. 无机盐工业, 2021, 53(7): 73-79.
[7]	陈云飞,毛丽莉,刘丹,王海增. 六水氯化镁在六种多元醇中溶解度的测定和关联[J]. 无机盐工业, 2021, 53(12): 85-90.
[8]	杨家敏,朱静,胡雪,吴强,李天祥. 283.15 K下三元KCl-NH₄Cl-H₂O和KH₂PO₄-NH₄H₂PO₄-H₂O体系固-液相平衡测定与关联[J]. 无机盐工业, 2021, 53(1): 30-35.
[9]	刘珏欣,郑承刚,叶世超. 磷酸二氢钾结晶热力学数据的测定及应用研究[J]. 无机盐工业, 2021, 53(1): 62-64.
[10]	张莉媛,王刚,齐美玲,解玉龙. 表面活性剂对光卤石中氯化钾结晶介稳区和诱导期的影响[J]. 无机盐工业, 2020, 52(6): 46-49.
[11]	王居奎,董兴锋,赵冬,王士强,郭亚飞,邓天龙. 四元体系硼酸锂-硼酸钾-硼酸镁-水在308.15 K时固液相平衡研究[J]. 无机盐工业, 2020, 52(5): 27-30.
[12]	齐美玲,王刚,张莉媛,解玉龙. 光卤石中氯化钾溶解度、介穏区、诱导期测定[J]. 无机盐工业, 2020, 52(5): 45-49.
[13]	臧毅华,陈赞,盛春光,吴巍,郑秋红,汪良明. T型分子筛膜的制备及其对含酸乙腈-水的分离性能[J]. 无机盐工业, 2020, 52(2): 50-53.
[14]	吴强,胡雪,朱静,杨家敏,李天祥. KH₂PO₄-KCl-H₂O、NH₄H₂PO₄-NH₄Cl-H₂O三元体系283.15 K相平衡研究[J]. 无机盐工业, 2020, 52(11): 24-28.
[15]	曹鹏. 硫酸法钛白粉酸解主反应对固相物溶解度的影响[J]. 无机盐工业, 2019, 51(9): 54-56.

首页

全国无机盐信息中心

中国化工学会

无机酸碱盐专业委员会

磷酸二氢钾在乙腈-水溶剂中溶解度的测定与关联

Determination and correlation of solubility of potassium dihydrogen phosphate in acetonitrile-water solvent

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 12

相关文章 15

Metrics

本文评价

推荐阅读 0

首 页

磷酸二氢钾在乙腈-水溶剂中溶解度的测定与关联

Determination and correlation of solubility of potassium dihydrogen phosphate in acetonitrile-water solvent

RichHTML

PDF (PC)

可视化

引用本文

使用本文

首页