Method for producing tetraammine chloride crystals by taking ethanol as solvent
A dichlorotetraammine platinum and crystallization technology, which is applied in chemical instruments and methods, ruthenium/rhodium/palladium/osmium/iridium/platinum compounds, inorganic chemistry, etc., can solve the problems of high energy consumption, large difference in crystal grain size, and distribution Inhomogeneity and other problems, to achieve the effect of mild reaction conditions, stable product quality, and guaranteed purity requirements
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[0012] The present invention will be further described below in conjunction with accompanying drawing.
[0013] Such as figure 1 As shown, the mother liquor with stable valence state is prepared: in the environment with negative pressure and tail gas treatment, the elemental platinum is dissolved in a ceramic or glass container with aqua regia reagent to make solution, and then it is treated with nitrate and acid to control The acidity and oxidation of the solution form a stable +4-valent chloroplatinic acid solution;
[0014] Preparation of metastable crystallization mother liquor: use hydrazine hydrate as the reducing agent, control the temperature, concentration, and flow rate of the hydrazine hydrate reducing agent, and process the +4-valent chloroplatinic acid solution to realize the +4-valent chloroplatinic acid solution To metastable +2 valent chloroplatinous acid solution transformation;
[0015] Preparation of tetraammine dichloroplatinum solution: After temperature...
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