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    • 7. 发明申请
    • PROCESS FOR MAKING ANATASE TITANIUM (IV) OXIDE
    • 制备氧化钛(IV)的方法
    • WO2008079311A1
    • 2008-07-03
    • PCT/US2007/026105
    • 2007-12-20
    • E. I. DU PONT DE NEMOURS AND COMPANYSCOTT, David, M.TORARDI, CarmineGRUSHIN, Vladimir
    • SCOTT, David, M.TORARDI, CarmineGRUSHIN, Vladimir
    • C01G23/047C01G23/053
    • C01G23/047B82Y30/00C01G23/053C01P2002/70C01P2002/84C01P2004/51C01P2004/64C01P2006/22C09C1/3661
    • The disclosure pertains to a process for making anatase titanium dioxide particles, comprising: vigorously mixing (a) a volume of a first component comprising a major proportion of an alcohol, a minor proportion of a titanium alkoxide and a minor proportion of a titanium alkoxide activator selected from the group consisting of water and a first aqueous base, and (b) a second component selected from the group consisting of water and a second aqueous base, at least one of the first component or the second component having a base therein, the second component being substantially free of alcohol, to form a mixture comprising a suspension of finely divided titanium (IV) oxide particles, the mixture having a water to titanium molar ratio ranging from about 40 to about 1 to about 5000 to about 1, wherein the proportion of the titanium alkoxide, the proportion of the activator, the mixing vigor, and a ratio of the volume of the first component to the second component are effective for the suspension of the finely divided titanium (IV) oxide particles to form in the mixture; and heating the suspension to convert the titanium (IV) oxide particles of the suspension to anatase titanium dioxide.
    • 本公开涉及制备锐钛型二氧化钛颗粒的方法,其包括:剧烈混合(a)一定体积的第一组分,所述第一组分包含主要部分的醇,少部分的钛醇盐和少量的烷氧基钛活化剂 选自水和第一含水碱,和(b)选自水和第二含水碱的第二组分,所述第一组分或第二组分中的至少一个在其中具有碱,所述第二组分 第二组分基本上不含醇,以形成包含细碎的氧化钛(IV)颗粒的悬浮液的混合物,所述混合物的水与钛的摩尔比为约40至约1至约5000至约1,其中 钛醇盐的比例,活化剂的比例,混合活度以及第一组分与第二组分的体积比例对于悬浮液是有效的 在混合物中形成细分解的氧化钛(IV)颗粒; 并加热悬浮液以将悬浮液中的钛(IV)颗粒转化成锐钛矿型二氧化钛。
    • 9. 发明申请
    • HIGH TEMPERATURE STABLE ANATASE TITANIUM DIOXIDE
    • 高温稳定的钛酸二氧化钛
    • WO2009061707A1
    • 2009-05-14
    • PCT/US2008/082307
    • 2008-11-04
    • E. I. DU PONT DE NEMOURS AND COMPANYTORARDI, Carmine
    • TORARDI, Carmine
    • C01G23/053
    • 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晶体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碱,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。
    • 10. 发明申请
    • SUSPENSIONS OF TITANIUM (IV) OXIDE PARTICLES AND PROCESS FOR THEIR PRODUCTION
    • 钛(IV)氧化物颗粒的悬浮液及其生产方法
    • WO2008136818A2
    • 2008-11-13
    • PCT/US2007/026106
    • 2007-12-20
    • E. I. DU PONT DE NEMOURS AND COMPANYSCOTT, David, M.TORARDI, CarmineGRUSHIN, Vladimir
    • SCOTT, David, M.TORARDI, CarmineGRUSHIN, Vladimir
    • C01G23/047B82Y30/00C01G23/053C01P2002/70C01P2002/84C01P2004/51C01P2004/64C01P2006/22C09C1/3661
    • The disclosure pertains to a process for making a suspension of finely divided titanium (IV) oxide particles, comprising: vigorously mixing (a) a volume of a first component comprising a major proportion of an alcohol, a minor proportion of a titanium alkoxide and a minor proportion of a titanium alkoxide activator selected from the group consisting of water and a first aqueous base, and (b) a volume of a second component selected from the group consisting of water and a second aqueous base, at least one of the first component or the second component having a base therein, the second component being substantially free of alcohol, to form a mixture comprising a suspension of finely divided titanium (IV) oxide particles, the mixture having a water to titanium molar ratio ranging from about 40 to about 1 to about 5000 to about 1, wherein the proportion of the titanium alkoxide, the proportion of the activator, the mixing vigor, and a ratio of the volume of the first component to the volume of the second component are effective for the suspension of the finely divided particles to form in the mixture. The suspensions can be dried to recover a powder. Typically the particles are nanoparticles.
    • 本公开内容涉及制备细碎的氧化钛(IV)颗粒的悬浮液的方法,其包括:剧烈混合(a)一定体积的第一组分,所述第一组分包含主要部分的醇,少部分的钛醇盐和 少量比例的选自水和第一含水碱的烷氧基钛活化剂,和(b)一定体积的选自水和第二水性碱的第二组分,第一组分 或其中具有碱的第二组分,第二组分基本上不含醇,以形成包含细碎的钛(IV)氧化物颗粒的悬浮液的混合物,所述混合物的水与钛的摩尔比范围为约40至约 1至约5000至约1,其中钛醇盐的比例,活化剂的比例,混合活度以及第一组分与体积的比例 第二组分的e对于在混合物中形成的细碎颗粒的悬浮是有效的。 可以将悬浮液干燥以回收粉末。 通常颗粒是纳米颗粒。