SU100025A1 - Method for removing peroxide compounds from dioxane, ether, their homologs and other oxygenated solvents like them - Google Patents

Description

Dioxane, sulfuric ether, their homologs and other oxygen-containing solvents similar to them often contain impurities of peroxide compounds, which makes the use of these solvents unsafe. Existing methods for removing these oxygen-containing solvents from peroxide compounds consist in treating them with ferrous salts, dichloride chloride, hydriodic acid or acidified solutions of iodide salts, or boiling solvents with dilute acids. All of these methods have the disadvantage that foreign products, which are known to be difficult to remove, are clearly in with the solvents being processed.

The proposed method is characterized in that the release of oxygen-containing solvents from peroxide compounds is carried out by hydrogenation carried out in

the presence of Rene nickel or another hydrogenation catalyst. At the end of the hydrogenation, the catalyst is filtered off. The solvent after hydrogenation is distilled or used without distillation.

Note e. 200 ml of dioxane, which detects the presence of peroxide compounds in the iodine starch test, is placed in a pear for hydrogenation, 0.1-0.2 g of Rene nickel is introduced, the air is expelled from the pear, and then the pear is connected to a hydrogen-containing gasometer. her in an oscillatory motion. Depending on the amount of peroxide contained, 50 to 100 ml of hydrogen is absorbed, which takes about 1 hour. Dioxane is removed from the pear and filtered from the catalyst. After this operation, a peroxide test (iodine starch reaction) is negative.

No. 100025 2-

The subject matter of the invention is that these substances treat peroxide to co-hydrate hydrogen at mixing from dioxane, sulfuric ether, at ambient temperature and their homologues and other atmospheric pressure in the presence of oxygen-containing Rene nickel or other catalysts that differ in hydrogenation lysator.