GB459058A - Process for the manufacture of colloidal silicic acid (silica gel) from water glass - Google Patents

Process for the manufacture of colloidal silicic acid (silica gel) from water glass

Info

Publication number
GB459058A
GB459058A GB1923335A GB1923335A GB459058A GB 459058 A GB459058 A GB 459058A GB 1923335 A GB1923335 A GB 1923335A GB 1923335 A GB1923335 A GB 1923335A GB 459058 A GB459058 A GB 459058A
Authority
GB
United Kingdom
Prior art keywords
silica gel
water glass
litre
manufacture
silicic acid
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
GB1923335A
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
Priority to GB1923335A priority Critical patent/GB459058A/en
Publication of GB459058A publication Critical patent/GB459058A/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
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/152—Preparation of hydrogels
    • C01B33/154—Preparation of hydrogels by acidic treatment of aqueous silicate solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

Silica gel is obtained by precipitating water glass with an acid ammonium sulphate solution in such a quantity that after the separation of the gel, the remaining liquid has a pH between 2 and 5, preferably 2,5 and 4. According to an example one litre of normal hydrochloric acid and one litre of normal ammonium sulphate solution are added separately but simultaneously to one litre of a water glass solution with brisk stirring, the pH of the resulting mixture being 3. The reaction is conducted at or slightly below room temperature. After standing for 24 hours the silica gel is separated, freed from impurities in known manner and dried.
GB1923335A 1935-07-05 1935-07-05 Process for the manufacture of colloidal silicic acid (silica gel) from water glass Expired GB459058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1923335A GB459058A (en) 1935-07-05 1935-07-05 Process for the manufacture of colloidal silicic acid (silica gel) from water glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1923335A GB459058A (en) 1935-07-05 1935-07-05 Process for the manufacture of colloidal silicic acid (silica gel) from water glass

Publications (1)

Publication Number Publication Date
GB459058A true GB459058A (en) 1937-01-01

Family

ID=10125919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1923335A Expired GB459058A (en) 1935-07-05 1935-07-05 Process for the manufacture of colloidal silicic acid (silica gel) from water glass

Country Status (1)

Country Link
GB (1) GB459058A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561304A (en) * 1947-10-30 1951-07-17 Philadelphia Quartz Co Process for the production of finely divided amorphous silica
US2772957A (en) * 1953-11-09 1956-12-04 American Chrome Company Method of processing disseminated chromite ores

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561304A (en) * 1947-10-30 1951-07-17 Philadelphia Quartz Co Process for the production of finely divided amorphous silica
US2772957A (en) * 1953-11-09 1956-12-04 American Chrome Company Method of processing disseminated chromite ores

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