Experimental-computational approach for elucidating the dissolution behavior of potassium phosphates in near- and supercritical water

doi:10.1016/j.supflu.2021.105488

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 中国科学院气溶胶化学与物理重点实验室

	Experimental-computational approach for elucidating the dissolution behavior of potassium phosphates in near- and supercritical water
	Ding, Xin 4,5; Sheehan, James D.1; Zhang, Tian 2,3; Shen, Zhenxing 2,3; Wang, Yuqi 5; Jiang, Zhao 4; Fang, Tao 4
刊名	JOURNAL OF SUPERCRITICAL FLUIDS
	2022-02-01
卷号	181 页码:12
关键词	Dipotassium phosphate Monopotassium phosphate Solubility Near- and supercritical water Thermodynamic modeling
ISSN号	0896-8446
DOI	10.1016/j.supflu.2021.105488
通讯作者	Fang, Tao(taofang@xjtu.edu.cn)
英文摘要	The present work investigates the solubility of dipotassium and monopotassium phosphate in near- and supercritical water. The highest solubilities exceeded 100 mmol kg(-1) at 633.15 K and 30 MPa, the lowest temperature and highest pressure conditions examined, while at 723.15 K and 19 MPa, the lowest solubilities were observed for approximately 0.2 mmol kg(-1) and 0.001 mmol kg(-1). For potassium phosphates, increasing density and decreasing temperature monotonically increased their solubility. Three semi-empirical models were employed to correlate the measured solubility data. Enthalpy model and ionization model were demonstrated to provide the highest accuracies for correlating the experimental solubility of di- and monopotassium phosphate, respectively. The chemical equilibrium reactions facilitating the dissolution and precipitation of potassium phosphates were assessed by theoretical calculations via R-HKF equations of state. Calculations by the R-HKF EOS indicated that precipitation was thermodynamically favored under all conditions, however, increasing temperature and water density promoted the dissolution and hydrolysis of potassium phosphates.
资助项目	National Natural Science Foundation of China[22108228] ; National Natural Science Foundation of China[21706203] ; Special Guidance Funds for the Construction of World-Class Universities (Disciplines) and Characteristic Development in Central Universities[PY3A076] ; China Postdoctoral Science Foundation[2019M663731] ; China Postdoctoral Science Foundation[2019M660258] ; Natural Science Basic Research Plan in Shaanxi Province of China[2017JQ2030] ; Natural Science Basic Research Plan in Shaanxi Province of China[2020JQ-023] ; Fundamental Research Funds for the Central Universities in Xi'an Jiaotong University[cxtd2017004] ; Fundamental Research Funds for the Central Universities in Xi'an Jiaotong University[xjj2018035] ; Shaanxi Crea-tive Talents Promotion Plan-Technological Innovation Team[2019TD-039] ; Joint Laboratory of Xi'an JiaotongUniv ; Shaanxi Coal Chemical Industry Technology Research Insti-tute Co. Ltd.
WOS关键词	HYDROTHERMAL GASIFICATION ; TRANSPORT-PROPERTIES ; CORROSION BEHAVIOR ; SUBCRITICAL WATER ; INORGANIC ANIONS ; HIGH-PRESSURES ; SEWAGE-SLUDGE ; TEMPERATURES ; SOLUBILITY ; SUB
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000740349200010
资助机构	National Natural Science Foundation of China ; Special Guidance Funds for the Construction of World-Class Universities (Disciplines) and Characteristic Development in Central Universities ; China Postdoctoral Science Foundation ; Natural Science Basic Research Plan in Shaanxi Province of China ; Fundamental Research Funds for the Central Universities in Xi'an Jiaotong University ; Shaanxi Crea-tive Talents Promotion Plan-Technological Innovation Team ; Joint Laboratory of Xi'an JiaotongUniv ; Shaanxi Coal Chemical Industry Technology Research Insti-tute Co. Ltd.
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17356]
专题	中国科学院气溶胶化学与物理重点实验室
通讯作者	Fang, Tao
作者单位	1.Univ Alabama, Dept Chem & Biol Engn, Tuscaloosa, AL 35487 USA 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 3.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 4.Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Shaanxi Key Lab Energy Chem Proc Intensificat, Xian 710049, Peoples R China 5.Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Ding, Xin,Sheehan, James D.,Zhang, Tian,et al. Experimental-computational approach for elucidating the dissolution behavior of potassium phosphates in near- and supercritical water[J]. JOURNAL OF SUPERCRITICAL FLUIDS,2022,181:12.
APA	Ding, Xin.,Sheehan, James D..,Zhang, Tian.,Shen, Zhenxing.,Wang, Yuqi.,...&Fang, Tao.(2022).Experimental-computational approach for elucidating the dissolution behavior of potassium phosphates in near- and supercritical water.JOURNAL OF SUPERCRITICAL FLUIDS,181,12.
MLA	Ding, Xin,et al."Experimental-computational approach for elucidating the dissolution behavior of potassium phosphates in near- and supercritical water".JOURNAL OF SUPERCRITICAL FLUIDS 181(2022):12.