WO2007055570A3 - Process for preparing a metal hydroxide - Google Patents

Process for preparing a metal hydroxide

Info

Publication number
WO2007055570A3
WO2007055570A3 PCT/NL2006/000563 NL2006000563W WO2007055570A3 WO 2007055570 A3 WO2007055570 A3 WO 2007055570A3 NL 2006000563 W NL2006000563 W NL 2006000563W WO 2007055570 A3 WO2007055570 A3 WO 2007055570A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
metal hydroxide
solution
remaining solution
step
preparing
Prior art date
Application number
PCT/NL2006/000563
Other languages
French (fr)
Other versions
WO2007055570A2 (en )
Inventor
Jan Peter Brouwer
Original Assignee
Tno
Jan Peter Brouwer
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14Methods for preparing oxides or hydroxides in general
    • C01B13/36Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/141Preparation of hydrosols or aqueous dispersions
    • C01B33/142Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00Compounds of calcium, strontium, or barium
    • C01F11/02Oxides or hydroxides
    • C01F11/12Oxides or hydroxides from silicates
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00Compounds of magnesium
    • C01F5/14Magnesium hydroxide

Abstract

The invention provides a process for preparing a metal hydroxide comprising the steps of: (a) providing particles of a metal silicate; (b) mixing the particles with a mineral acid solution to obtain a slurry which comprises precipitated silica; (c) separating the precipitated silica from the slurry to obtain a remaining solution; (d) increasing the pH of the remaining solution to such an extent that a metal hydroxide is formed; (e) separating the metal hydroxide so obtained from the remaining solution; and (f) adding to the remaining solution obtained in step (e) an acid solution, thereby forming a salt containing solution, or (g) removing at least part of the base added in step (d) from the remaining solution obtained in step (e), thereby forming a salt containing solution.
PCT/NL2006/000563 2005-11-09 2006-11-09 Process for preparing a metal hydroxide WO2007055570A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05077552.7 2005-11-09
EP20050077552 EP1785396A1 (en) 2005-11-09 2005-11-09 Process for preparing a metal hydroxide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20060824257 EP1954630A2 (en) 2005-11-09 2006-11-09 Process for preparing a metal hydroxide
US12092776 US20090214416A1 (en) 2005-11-09 2006-11-09 Process for preparing a metal hydroxide

Publications (2)

Publication Number Publication Date
WO2007055570A2 true WO2007055570A2 (en) 2007-05-18
WO2007055570A3 true true WO2007055570A3 (en) 2007-07-12

Family

ID=36568960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2006/000563 WO2007055570A3 (en) 2005-11-09 2006-11-09 Process for preparing a metal hydroxide

Country Status (3)

Country Link
US (1) US20090214416A1 (en)
EP (2) EP1785396A1 (en)
WO (1) WO2007055570A3 (en)

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GB0922386D0 (en) * 2009-12-22 2010-02-03 Univ Nottingham Improvements in or relating to the capture of carbon dioxide
US20110158873A1 (en) * 2010-01-22 2011-06-30 Rutgers, The State University Of New Jersey Sequestration of a gas emitted by an industrial plant

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454583A (en) * 1920-11-11 1923-05-08 Norske Saltverker As De Process of producing magnesium nitrate
US2549798A (en) * 1947-01-17 1951-04-24 Edwin A Gee Production of magnesium chloride from magnesium silicate ore
US3711600A (en) * 1970-12-22 1973-01-16 Atomic Energy Commission Process for preparing calcined oxides
DE2228921A1 (en) * 1971-06-18 1972-12-21
US4289736A (en) * 1978-10-18 1981-09-15 Universite De Sherbrooke Filtering of precipitating silica
US4944928A (en) * 1987-06-26 1990-07-31 Veitscher Magnestiwerke-Actien-Gesellschaft Process for producing pure magnesium oxide
WO1992012097A1 (en) * 1990-12-26 1992-07-23 The Dow Chemical Company Magnesium hydroxide having stacked layer, crystalline structure and process therefor
WO2002048036A1 (en) * 2000-11-02 2002-06-20 Silica Tech Ans Extraction of silica and magnesium compounds from olivine
WO2004048264A2 (en) * 2002-11-27 2004-06-10 Idntaeknistofnun Islands A process for production of silica from olivine
WO2005068363A1 (en) * 2004-01-14 2005-07-28 Cod Technologies A.S. Process for production of precipitated silica from olivine

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Also Published As

Publication number Publication date Type
EP1785396A1 (en) 2007-05-16 application
US20090214416A1 (en) 2009-08-27 application
WO2007055570A2 (en) 2007-05-18 application
EP1954630A2 (en) 2008-08-13 application

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