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Preparation method of barium zirconate titanate powder
The invention relates to a preparation method of barium zirconate titanate powder. The preparation method comprises the following steps: preparing a zirconium oxychloride-titanium tetrachloride mixed solution, wherein the mole ratio of Zr<4+> to Ti<4+> in the mixed solution is x:(1-x); adding an alkaline solution into a barium chloride solution to prepare a barium hydroxide suspension; under stirring conditions, dropwisely adding the barium hydroxide suspension into the zirconium oxychloride-titanium tetrachloride mixed solution to obtain a mixed solution; adding an alkaline solution into the mixed solution to regulate the pH value of the mixed solution to 12.8-13.2, thereby obtaining a barium zirconate titanate precursor solution; heating the barium zirconate titanate precursor solution at constant temperature under ordinary pressure to obtain spherical barium zirconate titanate; and washing the spherical barium zirconate titanate with deionized water until the specific area of the barium zirconate titanate is 7-11 m<2>/g, filtering, and drying to obtain the barium zirconate titanate powder. The method has the advantages of mild preparation conditions, large particle size and favorable dispersity.
Preparation method of barium zirconate titanate powder
The invention relates to a preparation method of barium zirconate titanate powder. The preparation method comprises the following steps: preparing a zirconium oxychloride-titanium tetrachloride mixed solution, wherein the mole ratio of Zr<4+> to Ti<4+> in the mixed solution is x:(1-x); adding an alkaline solution into a barium chloride solution to prepare a barium hydroxide suspension; under stirring conditions, dropwisely adding the barium hydroxide suspension into the zirconium oxychloride-titanium tetrachloride mixed solution to obtain a mixed solution; adding an alkaline solution into the mixed solution to regulate the pH value of the mixed solution to 12.8-13.2, thereby obtaining a barium zirconate titanate precursor solution; heating the barium zirconate titanate precursor solution at constant temperature under ordinary pressure to obtain spherical barium zirconate titanate; and washing the spherical barium zirconate titanate with deionized water until the specific area of the barium zirconate titanate is 7-11 m<2>/g, filtering, and drying to obtain the barium zirconate titanate powder. The method has the advantages of mild preparation conditions, large particle size and favorable dispersity.
Preparation method of barium zirconate titanate powder
LIU YANLI (author) / ZHAO XINGGUO (author) / LIN YANXIN (author) / LIU KUN (author) / NIE XIAOMING (author) / WANG XIAOGUO (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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