GB876671A - Purification of hydrated silica - Google Patents

Purification of hydrated silica

Info

Publication number
GB876671A
GB876671A GB39497/57A GB3949757A GB876671A GB 876671 A GB876671 A GB 876671A GB 39497/57 A GB39497/57 A GB 39497/57A GB 3949757 A GB3949757 A GB 3949757A GB 876671 A GB876671 A GB 876671A
Authority
GB
United Kingdom
Prior art keywords
resin
silica
particle size
bed
interaction
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
GB39497/57A
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.)
Columbia Southern Chemical Corp
Original Assignee
Columbia Southern Chemical Corp
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 Columbia Southern Chemical Corp filed Critical Columbia Southern Chemical Corp
Publication of GB876671A publication Critical patent/GB876671A/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
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
    • 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
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/06—Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration
    • 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
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/10—Ion-exchange processes in general; Apparatus therefor with moving ion-exchange material; with ion-exchange material in suspension or in fluidised-bed form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Composite Materials (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Silicon Compounds (AREA)

Abstract

Ions are removed from finely divided hydrated silica having a specific surface area of 100-250 sq.m./gm., and being in the form of filterable aggregates of ultimate particles having an average ultimate particle size below 0.1 micron, by passing an aqueous suspension of the silica, e.g. containing 1-30% of silica, preferably through a porous bed of ion exchange resin, e.g. sulphonated polystyrene, styrene vinyl benzene copolymer, phenol-formaldehyde resin, lignin, or peat, or an amino styrene polymer or copolymer. The suspension is preferably passed upwards through the bed. The resin may have a particle size of 10-100 Tyler mesh, it may be in the form of aggregates of beads partially fused together, and it may be confined in a coarsely woven fabric bag. The resin may be mixed with an inert solid, e.g. by passing an aqueous suspension of the resin downwards through a bed of the inert solid. According to the example silica is produced by the interaction of sodium silicate and carbon dioxide, filtered, washed with water, and slurried in water to give a concentration of 4-5%. The resulting slurry is passed upwards through an 8-inch long 1-inch wide column three-quarters filled with 15gms. of sulphonated phenolformaldehyde resin having a particle size of 16-50 mesh admixed with one-quarter inch Berl saddles of unglazed porcelain. Percentage impurity and pH before and after treatment are specified. Two further preparations of siilca by the interaction of sodium silicate and carbon dioxide are given. Specification 774,586 is referred to.
GB39497/57A 1956-12-24 1957-12-19 Purification of hydrated silica Expired GB876671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US876671XA 1956-12-24 1956-12-24

Publications (1)

Publication Number Publication Date
GB876671A true GB876671A (en) 1961-09-06

Family

ID=22206535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39497/57A Expired GB876671A (en) 1956-12-24 1957-12-19 Purification of hydrated silica

Country Status (3)

Country Link
DE (1) DE1048561B (en)
FR (1) FR1196951A (en)
GB (1) GB876671A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191812A (en) * 1978-09-19 1980-03-04 Rohm And Haas Company Ion exchange process involving emulsion ion exchange resins
FR2471949A1 (en) * 1979-12-20 1981-06-26 Rhone Poulenc Ind Fine silica prepn. - by reaction of alkali metal and acid using sequestering agent to complex with impurity metallic ions(BR 7.7.81)

Also Published As

Publication number Publication date
FR1196951A (en) 1959-11-27
DE1048561B (en) 1959-01-15

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