Determination and analysis of solid–liquid equilibria for ternary systems Na2SO4–H2O2–H2O and Na2CO3–H2O2–H2O at 5 °C

IF 1 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Journal of Chemical Research Pub Date : 2024-03-06 DOI:10.1177/17475198241234642

Yue Liu

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引用次数: 0

Abstract

To develop a better process for synthesizing sodium percarbonate and getting separation of the sodium salt, the equilibrium of the ternary system Na2SO4–H2O2–H2O and Na2CO3–H2O2–H2O at 5 °C was determined using the isothermal method, and the appropriate synthesis conditions for sodium carbonate from a theoretical perspective was discussed. The Na2SO4–H2O2–H2O system phase diagram contains one co-saturated point of Na2SO4·0.5H2O2·H2O and Na2SO4·10H2O. The Na2CO3–H2O2–H2O system phase diagram contains three crystal zones: Na2CO3·10H2O crystallization field, 0Na2CO3·1.5H2O2·H2O crystallization field and Na2CO3·2H2O2·H2O crystallization field. According to the phase diagram, the suitable raw material ratio of sodium percarbonate synthesis was obtained, to get the maximum of product yield, the optimal mass ratio of Na2CO3 to 30% H2O2 is 0.609.

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5 °C 下 Na2SO4-H2O2-H2O 和 Na2CO3-H2O2-H2O 三元体系固液平衡的测定与分析

为了开发一种更好的合成过碳酸钠并分离钠盐的工艺，采用等温法测定了 5 °C 下 Na2SO4-H2O2-H2O 和 Na2CO3-H2O2-H2O 三元体系的平衡，并从理论角度讨论了碳酸钠的合适合成条件。Na2SO4-H2O2-H2O 系统相图包含 Na2SO4-0.5H2O2-H2O 和 Na2SO4-10H2O 的一个共饱和点。Na2CO3-H2O2-H2O 系统相图包含三个晶带：Na2CO3-10H2O 结晶区、0Na2CO3-1.5H2O2-H2O 结晶区和 Na2CO3-2H2O2-H2O 结晶区。根据相图，得到了合成过碳酸钠的合适原料配比，为获得最大的产品收率，Na2CO3 与 30% H2O2 的最佳质量比为 0.609。

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来源期刊

Journal of Chemical Research CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

1.0 months

期刊介绍： The Journal of Chemical Research is a monthly journal which has a broad international authorship and publishes research papers and reviews in all branches of experimental chemistry. Established in 1977 as a joint venture by the British, French and German chemical societies it maintains the high standards set by the founding societies. Each paper is independently peer reviewed and only carefully evaluated contributions are accepted. Recent papers have described new synthetic methods, new heterocyclic compounds, new natural products, and the inorganic chemistry of metal complexes.