GB1265890A - - Google Patents

Info

Publication number
GB1265890A
GB1265890A GB1265890DA GB1265890A GB 1265890 A GB1265890 A GB 1265890A GB 1265890D A GB1265890D A GB 1265890DA GB 1265890 A GB1265890 A GB 1265890A
Authority
GB
United Kingdom
Prior art keywords
water
alcoholate
mixing
organic medium
immiscible
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
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 filed Critical
Publication of GB1265890A publication Critical patent/GB1265890A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/0091—Preparation of aerogels, e.g. xerogels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Silicon Compounds (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

1,265,890. Aerogels. FRANCE ARMED FORCES MINISTER OF. 15 July, 1969 [15 July, 1968], No. 35673/69. Headings C1A and C1N. An aerogel of a metal oxide e.g. aluminium, titanium or zirconium oxide is made by mixing water with either (a) a solution of a hydrolysable metal alcoholate in a water-immiscible organic medium or (b) a suspension of such an alcoholate in a water-miscible organic medium so as to hydrolyse the alcoholate to a precipitated metal hydroxide, and removing the organic medium and at least the majority of the water by evacuation in an autoclave. An inhomogeneous 2-phase system (not counting precipitated metal oxide) is produced on mixing the water and alcoholate solution or suspension. The water-immiscible solvent may be benzene, and the water immiscible suspending agent may be the alcohol corresponding to the alcoholate group of tho metal compound. The mixing with water may be effected under acid or alkaline conditions by adding acetic acid or ammonia. Examples describe the preparation of zirconium and titanium oxide aerogels from n-butylates, npropylates and isopropylates.
GB1265890D 1968-07-15 1969-07-15 Expired GB1265890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR159256 1968-07-15

Publications (1)

Publication Number Publication Date
GB1265890A true GB1265890A (en) 1972-03-08

Family

ID=8652581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1265890D Expired GB1265890A (en) 1968-07-15 1969-07-15

Country Status (5)

Country Link
BE (1) BE735179A (en)
DE (1) DE1935721A1 (en)
FR (1) FR1587066A (en)
GB (1) GB1265890A (en)
NL (1) NL6910837A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339559A (en) 1980-05-21 1982-07-13 Phillips Petroleum Company Polymerization using silica from single phase controlled hydrolysis of silicate ester
GB2168334A (en) * 1984-12-13 1986-06-18 South African Inventions Production of complex metal hydroxide powders
EP0255702A2 (en) * 1986-07-31 1988-02-10 Montedison S.p.A. Process for preparing fine particles of metal oxides
GB2196621A (en) * 1986-10-23 1988-05-05 Plessey Co Plc Particulate oxide materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4619908A (en) * 1984-12-24 1986-10-28 Stauffer Chemical Company Non-aged inorganic oxide-containing aerogels and their preparation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339559A (en) 1980-05-21 1982-07-13 Phillips Petroleum Company Polymerization using silica from single phase controlled hydrolysis of silicate ester
GB2168334A (en) * 1984-12-13 1986-06-18 South African Inventions Production of complex metal hydroxide powders
EP0255702A2 (en) * 1986-07-31 1988-02-10 Montedison S.p.A. Process for preparing fine particles of metal oxides
EP0255702A3 (en) * 1986-07-31 1989-10-11 Montedison S.p.A. Process for preparing fine particles of metal oxides
GB2196621A (en) * 1986-10-23 1988-05-05 Plessey Co Plc Particulate oxide materials

Also Published As

Publication number Publication date
DE1935721A1 (en) 1970-07-16
BE735179A (en) 1969-12-01
FR1587066A (en) 1970-03-13
NL6910837A (en) 1970-01-19

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Legal Events

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