GB452144A - Method of producing persilicates of increased stability with high content of hydrogen peroxide or active oxygen - Google Patents

Method of producing persilicates of increased stability with high content of hydrogen peroxide or active oxygen

Info

Publication number
GB452144A
GB452144A GB35897/34A GB3589734A GB452144A GB 452144 A GB452144 A GB 452144A GB 35897/34 A GB35897/34 A GB 35897/34A GB 3589734 A GB3589734 A GB 3589734A GB 452144 A GB452144 A GB 452144A
Authority
GB
United Kingdom
Prior art keywords
solution
hydrogen peroxide
vacuo
compound
dehydrated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB35897/34A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB452144A publication Critical patent/GB452144A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/14—Peroxyhydrates; Peroxyacids or salts thereof containing silicon

Abstract

Persilicates or persilicic acid of increased stability are obtained by practically fully dehydrating the hydrous compounds in vacuo, if desired in the presence of stabilizers such as chloride, sulphide, cyanide, urea, or barbituric acid. Practically fully dehydrating is defined to mean dehydration to a water content of about 1 per cent. The hydrous compounds may be prepared by precipitation from silicate solutions, by adding silicon dioxide hydrate to a metal peroxide, by crystallization from a solution of a silicon compound in hydrogen peroxide, by anodic oxidation, or by cathodic reduction of oxygen. In examples: (1) Hydrogen peroxide is poured over freshly produced silicic acid and the mixture distilled in vacuo to obtain the compound SiO2.H2O2. 2H2O. By continuing the distillation in vacuo on a water bath at higher temperatures, first the monohydrate and finally the anhydrous compound is obtained; (2) Lithium silicate is dissolved in hydrogen peroxide solution and the solution distilled to obtain the compound Li2SiO3.H2O2.H2O, which is then dehydrated in vacuo; (3) Sodium silicate is dissolved in hydrogen peroxide solution and the cooled solution treated with barium chloride to precipitate the compound BaSi2O5.2H2O2 3H2O, which is then dehydrated in vacuo; (4) Lithium peroxide and silicon dioxide hydrate are ground together to a fine powder and the mixture carefully warmed to obtain the persilicate for dehydration; (5) A concentrated solution of sodium metasilicate is subjected to anodic oxidation using platinum foil electrodes. A high current density is employed and the solution cooled. The persilicate produced is dehydrated; (6) A solution of sodium silicate in a solution of hydrogen peroxide is electrolyzed using a lead peroxide anode and a copper amalgam cathode, the current density being very low. Oxygen or gases containing it are blown against the cathode and a negative catalyst such as gelatine is added to avoid production of oxygen. The persilicate produced is dehydrated. In examples 5 and 6, diaphragms may be used, if desired, consisting of asbestos with adhesive and filling materials, or cement materials, or a mixture of aluminium oxide and silicic acid.
GB35897/34A 1933-12-15 1934-12-14 Method of producing persilicates of increased stability with high content of hydrogen peroxide or active oxygen Expired GB452144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE452144X 1933-12-15

Publications (1)

Publication Number Publication Date
GB452144A true GB452144A (en) 1936-08-14

Family

ID=6538607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35897/34A Expired GB452144A (en) 1933-12-15 1934-12-14 Method of producing persilicates of increased stability with high content of hydrogen peroxide or active oxygen

Country Status (2)

Country Link
FR (1) FR783578A (en)
GB (1) GB452144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016241B (en) * 1952-01-30 1957-09-26 Zampoli & Brogi Process for the solidification of hydrogen peroxide
CN104828832A (en) * 2015-06-05 2015-08-12 确成硅化学股份有限公司 Method for preparing high-dispersity white carbon black by hydrochloric acid precipitation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016241B (en) * 1952-01-30 1957-09-26 Zampoli & Brogi Process for the solidification of hydrogen peroxide
CN104828832A (en) * 2015-06-05 2015-08-12 确成硅化学股份有限公司 Method for preparing high-dispersity white carbon black by hydrochloric acid precipitation method

Also Published As

Publication number Publication date
FR783578A (en) 1935-07-16

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