WO2013173305A3 - Process for producing high solids polysilicic acid with high soda efficiency and silica yield - Google Patents

Process for producing high solids polysilicic acid with high soda efficiency and silica yield Download PDF

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Publication number
WO2013173305A3
WO2013173305A3 PCT/US2013/040907 US2013040907W WO2013173305A3 WO 2013173305 A3 WO2013173305 A3 WO 2013173305A3 US 2013040907 W US2013040907 W US 2013040907W WO 2013173305 A3 WO2013173305 A3 WO 2013173305A3
Authority
WO
WIPO (PCT)
Prior art keywords
efficiency
polysilicic acid
soda
high solids
silica yield
Prior art date
Application number
PCT/US2013/040907
Other languages
French (fr)
Other versions
WO2013173305A2 (en
Inventor
Ryan A. NICKELL
Johan J. HEISZWOLF
David C. Lee
Elbert A. DE GRAAF
Ted M. LOUWEN
Edwin M. BERENDS
Original Assignee
Albemarle Corporation
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 Albemarle Corporation filed Critical Albemarle Corporation
Publication of WO2013173305A2 publication Critical patent/WO2013173305A2/en
Publication of WO2013173305A3 publication Critical patent/WO2013173305A3/en

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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

Abstract

Provided is a method for the preparation of high solids, low sodium content polysilicic acid (PSA). The method includes the steps of acidifying a waterglass solution such that the pH of the solution falls to 4 or less in a time period of less than about 20 seconds; and contacting the reduced pH waterglass solution with an acid exchange resin. In a preferred embodiment, the PSA is prepared in a recirculating loop.
PCT/US2013/040907 2012-05-14 2013-05-14 Process for producing high solids polysilicic acid with high soda efficiency and silica yield WO2013173305A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261646740P 2012-05-14 2012-05-14
US61/646,740 2012-05-14

Publications (2)

Publication Number Publication Date
WO2013173305A2 WO2013173305A2 (en) 2013-11-21
WO2013173305A3 true WO2013173305A3 (en) 2014-02-20

Family

ID=48626591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/040907 WO2013173305A2 (en) 2012-05-14 2013-05-14 Process for producing high solids polysilicic acid with high soda efficiency and silica yield

Country Status (1)

Country Link
WO (1) WO2013173305A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244325A (en) * 1940-04-15 1941-06-03 Paul G Bird Colloidal solutions of inorganic oxides
US2588389A (en) * 1948-06-19 1952-03-11 Du Pont Process of preparing silicic acid sols
GB1179956A (en) * 1967-06-19 1970-02-04 Ver Phosphatdungerwerke Veb A Process for the Production of Silicic Acid Sol.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727008A (en) 1953-08-25 1955-12-13 Du Pont Process for increasing the concentration of a metastable silica sol
US3468813A (en) 1965-09-13 1969-09-23 Nalco Chemical Co Method of producing acid silica sols

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244325A (en) * 1940-04-15 1941-06-03 Paul G Bird Colloidal solutions of inorganic oxides
US2588389A (en) * 1948-06-19 1952-03-11 Du Pont Process of preparing silicic acid sols
GB1179956A (en) * 1967-06-19 1970-02-04 Ver Phosphatdungerwerke Veb A Process for the Production of Silicic Acid Sol.

Also Published As

Publication number Publication date
WO2013173305A2 (en) 2013-11-21

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