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    • 10. 发明申请
    • HIGH TEMPERATURE STABLE ANATASE TITANIUM DIOXIDE
    • 高温稳定的钛酸二氧化钛
    • US20100266487A1
    • 2010-10-21
    • US12740874
    • 2008-11-04
    • Carmine Torardi
    • Carmine Torardi
    • C01G23/053C01G23/047
    • C01G23/0536B82Y30/00C01G25/02C01G27/02C01P2002/52C01P2002/72C01P2004/03C01P2004/61C01P2004/62C01P2004/64C01P2006/12C01P2006/14C01P2006/16C01P2006/36
    • This disclosure relates to a process for making titanium dioxide in an anatase crystalline form which is stable at temperatures above 1000° C., comprising: precipitating a halide salt and a hydrolyzed compound comprising titanium from a reaction mixture comprising a titanium starting material selected from the group consisting of titanium tetrachloride, titanium oxychloride, and mixtures thereof, a base selected from the group consisting of ammonium hydroxide, ammonium carbonate, ammonium bicarbonate, tetramethyl ammonium hydroxide or tetraethyl ammonium hydroxide or mixture thereof, a solvent selected from the group consisting of ethanol, n-propanol, i-propanol, dimethyl acetamide, alcoholic ammonium halide and aqueous ammonium halide and mixtures thereof, a source of aluminum and a source of silicon to form a precipitate; and removing the halide salt from the precipitate to recover a oxide of titanium in a predominantly anatase crystalline form. The disclosure additionally relates to anatase which is stable at temperatures above 1000° C.
    • 本公开涉及一种制备锐钛矿结晶形式的二氧化钛的方法,其在高于1000℃的温度下是稳定的,其包括:从包含钛原料的反应混合物中沉淀卤化物盐和包含钛的水解化合物,所述反应混合物选自 由四氯化钛,氯氧化钛及其混合物组成的组,选自氢氧化铵,碳酸铵,碳酸氢铵,四甲基氢氧化铵或氢氧化四乙铵或其混合物的碱,选自乙醇 正丙醇,异丙醇,二甲基乙酰胺,醇卤化铵和卤化铵水溶液及其混合物,铝源和硅源形成沉淀物; 并从沉淀物中除去卤化物盐以回收主要为锐钛矿型晶体的钛的氧化物。 本公开另外涉及在高于1000℃的温度下稳定的锐钛矿