Ruxue Yao, Yang Ge, Jiangtao Song, Fei Yuan*, Yafei Guo and Tianlong Deng*,
{"title":"338.15 K下Na+, K+, Ca2+//Cl - - h2o四元体系及其子系统的相平衡和相图","authors":"Ruxue Yao, Yang Ge, Jiangtao Song, Fei Yuan*, Yafei Guo and Tianlong Deng*, ","doi":"10.1021/acs.jced.4c0066010.1021/acs.jced.4c00660","DOIUrl":null,"url":null,"abstract":"<p >The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na<sup>+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>//Cl<sup>–</sup> -H<sub>2</sub>O) and its two subsystems ((Na<sup>+</sup>, Ca<sup>2+</sup>//Cl<sup>–</sup> -H<sub>2</sub>O) and (K<sup>+</sup>, Ca<sup>2+</sup>, //Cl<sup>–</sup> -H<sub>2</sub>O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl<sub>2</sub>, and CaCl<sub>2</sub>·2H<sub>2</sub>O at 338.15 K, and the incongruent double salt KCl·CaCl<sub>2</sub> occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.</p>","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"70 4","pages":"1687–1692 1687–1692"},"PeriodicalIF":2.1000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Phase Equilibria and Phase Diagram of the Quaternary System (Na+, K+, Ca2+//Cl– -H2O) and Its Subsystems at 338.15 K\",\"authors\":\"Ruxue Yao, Yang Ge, Jiangtao Song, Fei Yuan*, Yafei Guo and Tianlong Deng*, \",\"doi\":\"10.1021/acs.jced.4c0066010.1021/acs.jced.4c00660\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na<sup>+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>//Cl<sup>–</sup> -H<sub>2</sub>O) and its two subsystems ((Na<sup>+</sup>, Ca<sup>2+</sup>//Cl<sup>–</sup> -H<sub>2</sub>O) and (K<sup>+</sup>, Ca<sup>2+</sup>, //Cl<sup>–</sup> -H<sub>2</sub>O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl<sub>2</sub>, and CaCl<sub>2</sub>·2H<sub>2</sub>O at 338.15 K, and the incongruent double salt KCl·CaCl<sub>2</sub> occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.</p>\",\"PeriodicalId\":42,\"journal\":{\"name\":\"Journal of Chemical & Engineering Data\",\"volume\":\"70 4\",\"pages\":\"1687–1692 1687–1692\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-03-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Chemical & Engineering Data\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.jced.4c00660\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical & Engineering Data","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jced.4c00660","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Phase Equilibria and Phase Diagram of the Quaternary System (Na+, K+, Ca2+//Cl– -H2O) and Its Subsystems at 338.15 K
The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na+, K+, Ca2+//Cl– -H2O) and its two subsystems ((Na+, Ca2+//Cl– -H2O) and (K+, Ca2+, //Cl– -H2O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl2, and CaCl2·2H2O at 338.15 K, and the incongruent double salt KCl·CaCl2 occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.
期刊介绍:
The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.