Solubilities and Glass Formation in Aqueous Solutions of the Sodium Salts of Malonic Acid With and Without Ammonium Sulfate

被引：8

作者：

Kissinger, Jared A. ^{[1
]}

Buttke, Lukas G. ^{[1
]}

Vinokur, Anastasiya I. ^{[2
]}

Guzei, Ilia A. ^{[2
]}

Beyer, Keith D. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem & Biochem, La Crosse, WI 54601 USA

[2] Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2016年 / 120卷 / 21期

基金：

美国国家科学基金会;

关键词：

INORGANIC ELECTROLYTES; THERMODYNAMIC MODELS; DICARBOXYLIC-ACIDS; DUST PARTICLES; 298.15; K; X-RAY; AEROSOLS; TEMPERATURE; TRANSITION; CIRRUS;

D O I：

10.1021/acs.jpca.6b02656

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The solubility of sodium hydrogen malonate and sodium malonate in water both with and without ammonium sulfate present has been studied using differential scanning calorimetry and infrared spectroscopy. The crystals that form from sodium hydrogen malonate/water solutions were determined to be sodium hydrogen malonate monohydrate by single-crystal X-ray diffractometry. The crystals formed in sodium malonate/water solutions were determined to be sodium malonate monohydrate, a compound whose structure had not been previously known. When ammonium sulfate is added to these respective aqueous systems, the precipitation solids contain sodium sulfate decahydrate under low to moderate ammonium concentrations and lecontite (NaNH4SO4 center dot 2H(2)O) under high ammonium concentrations, which can be found under dry atmospheric conditions. Thus, it appears the presence of malonate and hydrogen malonate ions does not significantly affect the precipitation of inorganic salts in these systems. The glass transition temperatures of all solutions were also determined, and it was observed that the addition of ammonium sulfate slightly lowers the glass transition temperature in these solutions.

引用

页码：3827 / 3834

页数：8

共 41 条

[41] Do atmospheric aerosols form glasses? [J].

Zobrist, B. ;

Marcolli, C. ;

Pedernera, D. A. ;

Koop, T. .

ATMOSPHERIC CHEMISTRY AND PHYSICS, 2008, 8 (17) :5221-5244

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