GB1340230A - Preparation of silica of high pore volume - Google Patents

Preparation of silica of high pore volume

Info

Publication number
GB1340230A
GB1340230A GB4279471A GB4279471A GB1340230A GB 1340230 A GB1340230 A GB 1340230A GB 4279471 A GB4279471 A GB 4279471A GB 4279471 A GB4279471 A GB 4279471A GB 1340230 A GB1340230 A GB 1340230A
Authority
GB
United Kingdom
Prior art keywords
silica
silicate solution
preparation
hydrogel
silica hydrogel
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
GB4279471A
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.)
WR Grace and Co Conn
WR Grace and Co
Original Assignee
WR Grace and Co Conn
WR Grace and Co
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 WR Grace and Co Conn, WR Grace and Co filed Critical WR Grace and Co Conn
Publication of GB1340230A publication Critical patent/GB1340230A/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

Abstract

1340230 Preparation of a silica gel W R GRACE & CO 14 Sept 1971 [14 Sept 1970] 42794/71 Heading C1A A method for producing a porous silica gel comprises: adding to an alkali metal silicate solution a water soluble compound to make the silica obtained from it by acidification less soluble; adding an acid to this alkali metal silicate solution so as to reduce the pH to a value within the range 11À2 to 10À6 and form a silica hydrosol; allowing the silica hydrosol to set to a silica hydrogel; ageing the silica hydrogel; acidifying the silica hydrogel to reduce the pH to a value within the range 10 to 3; and recovering and washing the silica hydrogel thus obtained. The water soluble compound added to the silicate solution acts similarly to a coacervating agent and is preferably ammonia. Preferably the acid used to lower the pH is sulphuric acid or carbon dioxide.
GB4279471A 1970-09-14 1971-09-14 Preparation of silica of high pore volume Expired GB1340230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7196670A 1970-09-14 1970-09-14

Publications (1)

Publication Number Publication Date
GB1340230A true GB1340230A (en) 1973-12-12

Family

ID=22104715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4279471A Expired GB1340230A (en) 1970-09-14 1971-09-14 Preparation of silica of high pore volume

Country Status (6)

Country Link
JP (1) JPS549157B1 (en)
AU (1) AU460371B2 (en)
CA (1) CA944655A (en)
DE (1) DE2145090C2 (en)
FR (1) FR2107652A5 (en)
GB (1) GB1340230A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215733A (en) * 1986-04-25 1993-06-01 Unilever Patent Holdings B.V. Manufacture of silica gels using shear to reduce the particle size prior to washing with a hydrocyclone
CN115583656A (en) * 2022-10-12 2023-01-10 天津市建筑材料科学研究院有限公司 Method for preparing silicon dioxide aerogel through conversion of carbon dioxide aqueous solution
CN115849387A (en) * 2022-12-27 2023-03-28 中南大学 Method for preparing silicon dioxide gel by using steel slag powder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430801A1 (en) * 1984-08-22 1986-03-06 Bayer Ag, 5090 Leverkusen USE OF POROUS FILLERS IN POLYMERIZABLE MEASURES, SUCH MEASURES AND THE USE THEREOF FOR THE PRODUCTION OF MOLDED BODIES
KR0133232B1 (en) * 1994-10-20 1998-04-13 우덕창 Process of preparation of a powder of porous silicagel with low density
GB9625630D0 (en) * 1996-12-10 1997-01-29 Unilever Plc Controlled-pore amorphous silicas and process for manufacturing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237991B (en) * 1962-10-18 1967-04-06 Mobil Oil Corp Process for the manufacture of a silica-containing airgel
NL134071C (en) * 1965-07-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215733A (en) * 1986-04-25 1993-06-01 Unilever Patent Holdings B.V. Manufacture of silica gels using shear to reduce the particle size prior to washing with a hydrocyclone
CN115583656A (en) * 2022-10-12 2023-01-10 天津市建筑材料科学研究院有限公司 Method for preparing silicon dioxide aerogel through conversion of carbon dioxide aqueous solution
CN115583656B (en) * 2022-10-12 2024-04-09 天津市建筑材料科学研究院有限公司 Method for preparing silicon dioxide aerogel through carbon dioxide aqueous solution conversion
CN115849387A (en) * 2022-12-27 2023-03-28 中南大学 Method for preparing silicon dioxide gel by using steel slag powder

Also Published As

Publication number Publication date
AU3254471A (en) 1973-02-22
CA944655A (en) 1974-04-02
AU460371B2 (en) 1975-04-24
FR2107652A5 (en) 1972-05-05
DE2145090A1 (en) 1972-03-16
JPS549157B1 (en) 1979-04-21
DE2145090C2 (en) 1985-01-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee