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Patent Searching and Data


Title:
SELECTIVE-CATION-REMOVAL PURIFICATION OF ALUMINUM SOURCE
Document Type and Number:
WIPO Patent Application WO/2011/035187
Kind Code:
A3
Abstract:
A method of purifying an aluminum source includes dissolving an aluminum ion source to provide a first solution including aluminum ions having a pH of not greater than 4.0, adjusting the pH of the first solution with a tetraalkylammonium hydroxide solution to a pH in range of 4.1 to 8.4 thereby forming an aluminum hydroxide precipitate, separating the aluminum hydroxide precipitate from the first solution, washing the separated aluminum hydroxide precipitate with an aqueous solution having a pH in a range of 4.1 to 8.4, dissolving the washed aluminum hydroxide precipitate using an acid to provide a second solution having a pH of not greater than 4.0, and forming an aluminum salt from the second solution.

Inventors:
PETTEY LUCAS (US)
Application Number:
PCT/US2010/049374
Publication Date:
September 29, 2011
Filing Date:
September 17, 2010
Export Citation:
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Assignee:
EESTOR INC (US)
International Classes:
C22B9/02; C22B21/06
Foreign References:
JP2000178663A2000-06-27
JPH11140555A1999-05-25
JPS59179722A1984-10-12
JPS5524990A1980-02-22
Attorney, Agent or Firm:
LARSON NEWMAN & ABEL, LLP et al. (Suite 200Austin, Texas, US)
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