This paper reports the synthesis of isopropyl laurate while using a mixture of metal oxides as a catalyst. The best conversion value was obtained in the following conditions: 393 K, isopropanol:lauric acid molar ratio is 10:1, composition of the catalyst is 33 % CuO, 33 % Ag2O and 33 % Al2O3, catalyst/lauric acid ratio is 8 % (w/w), and reaction time 2 h. Isolation of the catalysts after esterification showed that the oxides were not converted into other materials.
In this article the new technological process of complete processing of solution Stebnik’s tailings on the basis a complex experimental researches, which involves the use of standard equipment, is developed. It enables to get two conditioned products (sodium chloride and bishofit) and potassium-magnesium fertilizer. The cyclic using of organic extractant in the process enables dramatically reduce material costs of processing tailings solution and provides ecological completeness of the process.
In this paper the results of experimental studies of the extraction process of chlorides from the production schoenite that contains more than 15 wt. % Cl-, with using 20 ... 50 % aqueous solutions of isopropyl alcohol are given. It is shown that the realization of extraction in 30 % extractant in ratio between solid and liquid phases that is equal 3, makes it possible to obtain a precipitate, which after dehydration contains on the dry weight (wt.
In this paper the experimental results of extraction magnesium chloride from solid intermediate product of processing of solution Stebnik's tailings with using 87.4...89.5 % aqueous solutions of isopropyl alcohol in the mass ratio between the solid and liquid phases 1:2.0...5.0 and the distillation of isopropyl alcohol with obtained solutions are presented. It is shown that the necessary conditions for obtaining of conditioned bischofite are the content in extractant 89.5 wt. % of isopropyl alcohol and the weight ratio between the solid and liquid phases that is equal 1:3,0...1:3.5.