GB663013A - Improvements in or relating to methods of preparation of inorganic oxide aquasols and the inorganic oxide aquasols resulting from said methods - Google Patents

Improvements in or relating to methods of preparation of inorganic oxide aquasols and the inorganic oxide aquasols resulting from said methods

Info

Publication number
GB663013A
GB663013A GB19742/49A GB1974249A GB663013A GB 663013 A GB663013 A GB 663013A GB 19742/49 A GB19742/49 A GB 19742/49A GB 1974249 A GB1974249 A GB 1974249A GB 663013 A GB663013 A GB 663013A
Authority
GB
United Kingdom
Prior art keywords
oxide
inorganic oxide
aquasols
methods
effluent
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
GB19742/49A
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.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical 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 Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Publication of GB663013A publication Critical patent/GB663013A/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
    • C01B33/141—Preparation of hydrosols or aqueous dispersions
    • C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates
    • C01B33/1435—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates using ion exchangers
    • 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
    • B01J13/0004—Preparation of sols
    • B01J13/0008—Sols of inorganic materials in water
    • B01J13/0017—Sols of inorganic materials in water by extraction of ions from aqueous solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Silicon Compounds (AREA)

Abstract

Concentrated inorganic-oxide aquasols containing dispersed particles of a large size are obtained by passing a mixture of an alkaline reacting inorganic-oxide aquasol containing alkali-metal ions and up to 4 per cent by weight of the same inorganic oxide in ionic form or in the form of particles having an average size below 40 millimicrons, through a cation-exchange material until the pH of the effluent is slightly below neutral, alkalising the effluent by the addition of an alkaline compound giving rise to alkali-metal ammonium or quaternary ammonium ions, heating to above 100 DEG C. and then recycling a portion of the effluent together with alkali-metal ions and up to 4 per cent by weight of the same inorganic oxide in ionic or the above small dimensional particle form. The process is particularly applicable to the production of silica aquasols but may also be used for producing sols of tungstic acid, vanadium oxide or molybdenum oxide. Specified alkaline compounds are ammonia, sodium hydroxide, sodium silicate, potassium silicate, benzyl triethyl ammonium hydroxide and tetramethyl ammonium hydroxide. Specified cation-exchangers are sulphonated or carboxylated synthetic resins of the phenolformaldehyde, tannin-formaldehyde or polydivinyl benzene type, or sulphonated brown coal or peat.
GB19742/49A 1948-07-31 1949-07-27 Improvements in or relating to methods of preparation of inorganic oxide aquasols and the inorganic oxide aquasols resulting from said methods Expired GB663013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663013XA 1948-07-31 1948-07-31

Publications (1)

Publication Number Publication Date
GB663013A true GB663013A (en) 1951-12-12

Family

ID=22068634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19742/49A Expired GB663013A (en) 1948-07-31 1949-07-27 Improvements in or relating to methods of preparation of inorganic oxide aquasols and the inorganic oxide aquasols resulting from said methods

Country Status (1)

Country Link
GB (1) GB663013A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151085A (en) * 1960-05-12 1964-09-29 Grace W R & Co Method for the preparation of metal oxide sols
WO1999036358A1 (en) * 1998-01-15 1999-07-22 Cabot Corporation Continuous production of silica via ion exchange
WO2000066492A1 (en) * 1999-05-04 2000-11-09 Akzo Nobel N.V. Silica-based sols
US6344240B1 (en) 1998-01-15 2002-02-05 Cabot Corporation Method of preparing hydrophobic silica
US7169261B2 (en) 1999-05-04 2007-01-30 Akzo Nobel N.V. Silica-based sols

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151085A (en) * 1960-05-12 1964-09-29 Grace W R & Co Method for the preparation of metal oxide sols
WO1999036358A1 (en) * 1998-01-15 1999-07-22 Cabot Corporation Continuous production of silica via ion exchange
US6344240B1 (en) 1998-01-15 2002-02-05 Cabot Corporation Method of preparing hydrophobic silica
WO2000066492A1 (en) * 1999-05-04 2000-11-09 Akzo Nobel N.V. Silica-based sols
WO2000066491A1 (en) * 1999-05-04 2000-11-09 Akzo Nobel N.V. Silica-based sols
EP1619171A2 (en) * 1999-05-04 2006-01-25 Akzo Nobel N.V. Silica-based sols
US7169261B2 (en) 1999-05-04 2007-01-30 Akzo Nobel N.V. Silica-based sols
EP1619171A3 (en) * 1999-05-04 2007-08-22 Akzo Nobel N.V. Silica-based sols
US7919535B2 (en) 1999-05-04 2011-04-05 Akzo Nobel N.V. Silica-based sols
US8835515B2 (en) * 1999-05-04 2014-09-16 Akzo Nobel, N.V. Silica-based sols

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