TITANIUM DIOXIDE HAVING A VARIABLE SINTERING STABILITY
    32.
    发明申请
    TITANIUM DIOXIDE HAVING A VARIABLE SINTERING STABILITY 审中-公开
    具有可变烧结稳定性的二氧化钛

    公开(公告)号:US20080318046A1

    公开(公告)日:2008-12-25

    申请号:US12125531

    申请日:2008-05-22

    IPC分类号: B32B5/16 C01G23/047 C01G23/07

    摘要: Provided is a crystalline TiO2 powder in the form of aggregated primary particles having a variable sintering stability at a BET surface area of 70-100 m2/g and a rutile content of greater than 10% but less than or equal to 40%, and a process for preparing the crystalline TiO2 powder, which involves: introducing a TiCl4 vapor and, separately therefrom, H2 and a primary air into a mixing chamber to produce a gaseous mixture; igniting the gaseous mixture in a burner to produce a flame, which is burned into a reaction chamber to produce the crystalline TiO2 powder and gaseous substances; and separating the crystalline TiO2 powder from the gaseous substances, wherein the relative amounts of TiCl4 vapor, H2 and primary air are selected to provide crystalline TiO2 powder having the aforementioned BET surface area and rutile content, with the proviso that factor A has a value of 0.1-0.4·105 g/m2 in accordance within the following formula: factor A=105{[(TiCl4 vapor×H2)/(primary air×gaseous mixture)]/BET]}.

    摘要翻译: 提供了在BET表面积为70-100m 2 / g,金红石含量大于10%但小于或等于40%时具有可变烧结稳定性的聚集一次颗粒形式的结晶TiO 2粉末,以及 制备结晶TiO 2粉末的方法,其包括:将TiCl 4蒸气和与其分开的H 2和一次空气引入混合室以产生气态混合物; 点燃燃烧器中的气体混合物以产生火焰,其被燃烧到反应室中以产生结晶TiO 2粉末和气态物质; 并且从气态物质中分离出结晶TiO 2粉末,其中选择TiCl 4蒸汽,H 2和一次空气的相对量以提供具有上述BET表面积和金红石含量的结晶TiO 2粉末,条件是因子A的值为 0.1-0.4.105g / m 2,按照下列公式:因子A = 105 {[(TiCl 4·蒸气×H 2)/(初级气体混合气体)] / BET]}。

    Pyrogenic silicon dioxide powder and dispersion thereof
    33.
    发明申请
    Pyrogenic silicon dioxide powder and dispersion thereof 有权
    热解二氧化硅粉末及其分散体

    公开(公告)号:US20060201647A1

    公开(公告)日:2006-09-14

    申请号:US10549929

    申请日:2004-03-15

    摘要: Pyrogenically produced silicon dioxide powder with a specific surface area of between 5 and 600 m2/g and a carbon content of less than 500 ppm, which displays a specific dibutyl phthalate absorption of less than or equal to 1.2 g dibutyl phthalate/100 g SiO2 per m2 of specific surface area and a specific thickening action of less than 15 mPas/m2 of specific surface area. It is produced by supplying vaporous tetramethoxysilane and/or tetraethoxysilane together with air and separately hydrogen to a burner, and allowing the mixture of gases to react in a flame in a reaction chamber connected in series to the burner, and separating the solid reaction product from the gas stream by known means, the lambda value in the burner being between 0.95 and 1.5 and sufficient secondary air also being supplied to the reaction chamber that the lambda value in the reaction chamber is between 0.8 and 1.6. The invention also provides a dispersion containing the silicon dioxide powder and the use of the powder and of the dispersion.

    摘要翻译: 比热表面积为5〜600m 2 / g,碳含量小于500ppm的热解生成二氧化硅粉末,其特征在于邻苯二甲酸二丁酯的吸收小于或等于1.2 g二丁基邻苯二甲酸酯/ 100g SiO 2 / m 2比表面积和特定增稠作用小于15mPas / m 2比表面积。 它是通过将空气四甲氧基硅烷和/或四乙氧基硅烷与空气和单独的氢气一起向燃烧器供应的,并且允许气体混合物在与燃烧器串联连接的反应室中的火焰中反应,并将固体反应产物从 通过已知方式的气流,燃烧器中的λ值在0.95和1.5之间,并且足够的二次空气也被供应到反应室,反应室中的λ值在0.8和1.6之间。 本发明还提供了含有二氧化硅粉末的分散体以及粉末和分散体的用途。

    Photocatalyst
    34.
    发明授权
    Photocatalyst 有权
    光催化剂

    公开(公告)号:US07910515B2

    公开(公告)日:2011-03-22

    申请号:US11995939

    申请日:2006-07-06

    摘要: Silicon titanium mixed oxide powder having the following features: BET surface area of 5 to 300 m2/g, silica content, based on the total amount of the mixed oxide powder, of ≧0.1 to

    摘要翻译: 具有以下特征的硅钛混合氧化物粉末:BET表面积为5〜300m 2 / g,二氧化硅含量相对于混合氧化物粉末的总量为0.1〜0.5重量%,二氧化钛含量为基 混合氧化物粉末的总量相对于混合氧化物粉末的总量为99.5重量%,二氧化钛和二氧化钛的比例相对于99.5重量%的二氧化钛的含量为99.5重量% 包含共生金红石和锐钛矿相的颗粒通过允许一种或多种在各种情况下的可氧化和/或可水解的钛和硅化合物的蒸气在高温区与氧气和/ 或蒸汽,在反应后冷却反应混合物,并从气态物质中分离出粉状固体。

    Silicon dioxide dispersion
    35.
    发明授权
    Silicon dioxide dispersion 有权
    二氧化硅分散体

    公开(公告)号:US07892510B2

    公开(公告)日:2011-02-22

    申请号:US12580384

    申请日:2009-10-16

    IPC分类号: C01B33/12 C01B33/18 C01B33/20

    摘要: Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis process under acid conditions. The dispersion is produced by incorporating the silicon dioxide powder into an aqueous solution by means of a dispersing device. The dispersion can be used to produce glass articles.

    摘要翻译: 稳定的含有二氧化硅粉末的水性分散体,该二氧化硅粉末的羟基密度为2.5〜4.7HOH / nm 2,其由在酸性条件下通过火焰水解法生产的二氧化硅粉末得到。 分散体是通过将二氧化硅粉末通过分散装置并入水溶液而制成的。 分散体可用于生产玻璃制品。

    Aluminium oxide powder produced by flame hydrolysis and having a large surface area
    37.
    发明授权
    Aluminium oxide powder produced by flame hydrolysis and having a large surface area 失效
    通过火焰水解产生的具有大的表面积的氧化铝粉末

    公开(公告)号:US07749322B2

    公开(公告)日:2010-07-06

    申请号:US10583723

    申请日:2004-11-30

    IPC分类号: C04B14/04 B24D3/02 C01F1/00

    摘要: Aluminium oxide powder produced by flame hydrolysis and consisting of aggregates of primary particles, having a BET surface area of from 100 to 250 m2/g, a dibutyl phthalate absorption of from 50 to 450 g/100 g of aluminium oxide powder, which powder shows only crystalline primary particles in high-resolution TEM pictures. It is prepared by vaporizing aluminium chloride, transferring the vapour by means of a carrier gas to a mixing chamber and, separately therefrom, supplying hydrogen, air (primary air), which may optionally be enriched with oxygen and/or may optionally be pre-heated, to the mixing chamber, then igniting the mixture of aluminium chloride vapour, hydrogen, air in a burner and burning the flame into a reaction chamber that is separated from the surrounding air, subsequently separating the solid material from the gaseous substances and then treating the solid material with steam and optionally with air, the discharge rate of the reaction mixture from the mixing chamber into the reaction chamber being at least 10 m/s, and the lambda value being from 1 to 10 and the gamma value being from 1 to 15. It can be used as an ink-absorbing substance in ink-jet media.

    摘要翻译: 由火焰水解生成的氧化铝粉末,其由BET表面积为100〜250m 2 / g的一次粒子的聚集体,邻苯二甲酸二丁酯的吸收为50〜450g / 100g的氧化铝粉末,该粉末显示 只有晶体初级粒子在高分辨率TEM图片中。 它是通过汽化氯化铝,通过载气将蒸气转移到混合室中制备的,并与其分开供应氢气,空气(一次空气),其可以任选地富含氧气和/ 加热到混合室,然后点燃燃烧器中的氯化铝蒸气,氢气,空气的混合物,并将火焰燃烧成与周围空气分离的反应室,随后将固体材料与气态物质分离,然后处理 具有蒸汽和任选地具有空气的固体材料,反应混合物从混合室进入反应室的排出速率为至少10m / s,λ值为1至10,γ值为1至 它可以用作喷墨介质中的吸墨物质。

    SILICON-TITANIUM MIXED OXIDE-CONTAINING DISPERSION FOR THE PRODUCTION OF TITANIUM-CONTAINING ZEOLITES
    38.
    发明申请
    SILICON-TITANIUM MIXED OXIDE-CONTAINING DISPERSION FOR THE PRODUCTION OF TITANIUM-CONTAINING ZEOLITES 审中-公开
    用于生产含钛的矾土的含硅 - 氧化钛混合氧化物分散体

    公开(公告)号:US20090137827A1

    公开(公告)日:2009-05-28

    申请号:US12294371

    申请日:2007-03-12

    摘要: Dispersion containing pyrogenic silicon-titanium mixed oxide powders with a silicon dioxide content of 75 to 99.99 wt.-% and a titanium dioxide content of 0.01 to 25 wt. %, water and a basic, quaternary ammonium compound, wherein the mean aggregate diameter of the particles of the silicon-titanium mixed oxide powder in the dispersion is 200 nm at most. Process for the production of a titanium-containing zeolite with the use of the dispersion.

    摘要翻译: 含有二氧化硅含量为75〜99.99重量%,二氧化钛含量为0.01〜25重量%的热解硅 - 钛混合氧化物粉末的分散体。 %,水和碱性季铵化合物,其中分散体中硅 - 钛混合氧化物粉末的颗粒的平均聚集体直径最大为200nm。 使用分散体生产含钛沸石的方法。

    Pyrogenically produced silicon dioxide powder and dispersion thereof
    39.
    发明授权
    Pyrogenically produced silicon dioxide powder and dispersion thereof 有权
    热解产生的二氧化硅粉末及其分散体

    公开(公告)号:US07537833B2

    公开(公告)日:2009-05-26

    申请号:US11055605

    申请日:2005-02-11

    IPC分类号: B32B5/16

    摘要: Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 90±15 m2/g, wherein the aggregates display an average surface area of 10000 to 20000 nm2, an average equivalent circle diameter (ECD) of 90 to 130 nm and an average circumference of 1000 to 1400 nm.It is produced by a pyrogenic process in which silicon tetrachloride and a second silicon component comprising H3SiCl, H2SiCl2, HSiCl3, CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and/or (n-C3H7)SiCl3 are mixed with primary air and a combustion gas and burnt into a reaction chamber, secondary air also being introduced into the reaction chamber, and the feed materials being chosen such that an adiabatic flame temperature of 1810 to 1890° C. is obtained.Dispersion containing the pyrogenically produced silicon dioxide powder.

    摘要翻译: 以BET表面积为90±15m 2 / g的一次粒子聚集体形式的热解法生产的二氧化硅粉末,其中聚集体的平均表面积为10000〜20000nm 2,平均当量圆直径(ECD)为90 至130nm,平均周长为1000〜1400nm。 其通过热解法制备,其中将四氯化硅和包含H3SiCl,H 2 SiCl 2,HSiCl 3,CH 3 SiCl 3,(CH 3)2 SiCl 2,(CH 3)3 SiCl和/或(n-C 3 H 7)SiCl 3的第二硅组分与一次空气和 燃烧气体并燃烧到反应室中,二次空气也被引入反应室,并且进料选择为使得获得1810至1890℃的绝热火焰温度。 含有热解产生的二氧化硅粉末的分散体。

    Pyrogenic silicon dioxide powder and dispersion thereof
    40.
    发明授权
    Pyrogenic silicon dioxide powder and dispersion thereof 有权
    热解二氧化硅粉末及其分散体

    公开(公告)号:US07534409B2

    公开(公告)日:2009-05-19

    申请号:US10549929

    申请日:2004-03-15

    IPC分类号: C01B33/12

    摘要: Pyrogenically produced silicon dioxide powder with a specific surface area of between 5 and 600 m2/g and a carbon content of less than 500 ppm, which displays a specific dibutyl phthalate absorption of less than or equal to 1.2 g dibutyl phthalate/100 g SiO2 per m2 of specific surface area and a specific thickening action of less than 15 mPas/m2 of specific surface area. It is produced by supplying vaporous tetramethoxysilane and/or tetraethoxysilane together with air and separately hydrogen to a burner, and allowing the mixture of gases to react in a flame in a reaction chamber connected in series to the burner, and separating the solid reaction product from the gas stream by known means, the lambda value in the burner being between 0.95 and 1.5 and sufficient secondary air also being supplied to the reaction chamber that the lambda value in the reaction chamber is between 0.8 and 1.6. The invention also provides a dispersion containing the silicon dioxide powder and the use of the powder and of the dispersion.

    摘要翻译: 热塑性二氧化硅粉末的比表面积为5〜600m2 / g,碳含量小于500ppm,其特征在于邻苯二甲酸二丁酯的吸收值小于或等于1.2g邻苯二甲酸二丁酯/ 100g SiO 2 m2的比表面积和比表面积小于15mPas / m 2的比增稠作用。 它是通过将空气四甲氧基硅烷和/或四乙氧基硅烷与空气和单独的氢气一起向燃烧器供应的,并且允许气体混合物在与燃烧器串联连接的反应室中的火焰中反应,并将固体反应产物从 通过已知方式的气流,燃烧器中的λ值在0.95和1.5之间,并且足够的二次空气也被供应到反应室,反应室中的λ值在0.8和1.6之间。 本发明还提供了含有二氧化硅粉末的分散体以及粉末和分散体的用途。