WO2006123284A3 - Production of hydrotalcite - Google Patents
Production of hydrotalcite Download PDFInfo
- Publication number
- WO2006123284A3 WO2006123284A3 PCT/IB2006/051514 IB2006051514W WO2006123284A3 WO 2006123284 A3 WO2006123284 A3 WO 2006123284A3 IB 2006051514 W IB2006051514 W IB 2006051514W WO 2006123284 A3 WO2006123284 A3 WO 2006123284A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bivalent
- sludge
- production
- particulate compound
- trivalent
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
- C01B13/366—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions by hydrothermal processing
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/78—Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen
- C01F7/784—Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions
- C01F7/785—Hydrotalcite
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/20—Two-dimensional structures
- C01P2002/22—Two-dimensional structures layered hydroxide-type, e.g. of the hydrotalcite-type
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
This invention relates to a process for producing hydrotaicite of the general formula: AwBx(OH)yCz.nH2O wherein A is a bivalent metal cation; B is a trivalent cation; and C is a mono or multivalent anion and: 0 < z ≤ x ≤ 4 ≤ w ≤ 1/2y and 0 ≤ n ≤ 12. The process includes the steps of providing a particulate compound selected from the group consisting of bivalent and trivalent metal oxides, hydroxides and carbonates; mixing the particulate compound with a water source and a carbonate source in the form of an alkali metal bicarbonate, to form a sludge, and subjecting the sludge to hydro/thermal treatment to induce crystallisation and formation of hydrøtaldte. in the case that the bivalent meÊal is Mg, run- of-roine mineral rrtagnesrte, is used as raw material for the production of hydrotafcfe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2007/09947A ZA200709947B (en) | 2005-05-19 | 2007-11-19 | Production of hydrotalcite |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2005/04040 | 2005-05-19 | ||
ZA200504040 | 2005-05-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006123284A2 WO2006123284A2 (en) | 2006-11-23 |
WO2006123284A3 true WO2006123284A3 (en) | 2007-07-19 |
Family
ID=37431646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2006/051514 WO2006123284A2 (en) | 2005-05-19 | 2006-05-15 | Production of hydrotalcite |
Country Status (2)
Country | Link |
---|---|
WO (1) | WO2006123284A2 (en) |
ZA (1) | ZA200709947B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101774548B (en) * | 2010-03-15 | 2011-04-27 | 北京泰克来尔科技有限公司 | Recycling technology of mother solution obtained by preparing layered composition metal hydroxide by coprecipitation method |
WO2013070054A1 (en) * | 2011-11-11 | 2013-05-16 | Instituto Nacional De Investigaciones Nucleares | Method for obtaining hydrogen, hydrotalcite and aluminium hydroxide from a first reaction between a magnesium-aluminium alloy and oxygen, and a second reaction between the magnesium-aluminium mixed oxide with water and dissolved carbonates |
CN102924044B (en) * | 2012-11-08 | 2014-01-01 | 沈阳建筑大学 | Direct hydrothermal method for boric sludge solidification |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4904457A (en) * | 1974-03-30 | 1990-02-27 | Aluminum Company Of America | Synthetic hydrotalcite |
US5364828A (en) * | 1992-10-21 | 1994-11-15 | Minerals Technologies | Spheroidal aggregate of platy synthetic hydrotalcite |
US5578286A (en) * | 1994-04-29 | 1996-11-26 | Aluminum Company Of America | Two powder synthesis of hydrotalcite-like compounds with divalent or polyvalent organic anions |
US20040141907A1 (en) * | 2001-04-19 | 2004-07-22 | Max Eisgruber | Method for producing hydrotalcites |
-
2006
- 2006-05-15 WO PCT/IB2006/051514 patent/WO2006123284A2/en active Application Filing
-
2007
- 2007-11-19 ZA ZA2007/09947A patent/ZA200709947B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4904457A (en) * | 1974-03-30 | 1990-02-27 | Aluminum Company Of America | Synthetic hydrotalcite |
US5364828A (en) * | 1992-10-21 | 1994-11-15 | Minerals Technologies | Spheroidal aggregate of platy synthetic hydrotalcite |
US5578286A (en) * | 1994-04-29 | 1996-11-26 | Aluminum Company Of America | Two powder synthesis of hydrotalcite-like compounds with divalent or polyvalent organic anions |
US20040141907A1 (en) * | 2001-04-19 | 2004-07-22 | Max Eisgruber | Method for producing hydrotalcites |
Also Published As
Publication number | Publication date |
---|---|
ZA200709947B (en) | 2014-01-29 |
WO2006123284A2 (en) | 2006-11-23 |
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