首页> 外国专利> Catalyst material useful e.g. for producing an exhaust gas catalyst, comprises titanium dioxide-silicon dioxide in a particle form with an low alkali content and with a specific surface area that is reduced on heating

Catalyst material useful e.g. for producing an exhaust gas catalyst, comprises titanium dioxide-silicon dioxide in a particle form with an low alkali content and with a specific surface area that is reduced on heating

机译:有用的催化剂材料例如用于生产废气催化剂的催化剂,其包含二氧化钛-二氧化硅,该二氧化钛-二氧化硅的颗粒形式具有低碱含量并且具有在加热时减少的比表面积

摘要

Catalyst material comprises titanium dioxide-silicon dioxide in a particle form with an alkali content of less than 300 ppm and with a specific surface area of 50-300 m 2/g, where the specific surface area is reduced to a maximum of 30%, on heating for 50 hours at 650[deg] C. An independent claim is also included for producing the low-alkali catalyst material comprising reacting a titanium-containing solution where the concentration of dissolved titanium is equivalent to 10-250 g of titanium dioxide per liter of solution, and a low-alkali solution of hydrated precursors of one or more silicon-oxygen-compounds in the presence of ammonia, filtering, washing, subjecting to thermal treatment and drying.
机译:催化剂材料包含颗粒形式的二氧化钛-二氧化硅,其碱含量小于300 ppm,并且比表面积为50-300 m 2> / g,其中比表面积最大减少为30%在650℃下加热50小时。还包括制备低碱性催化剂材料的独立权利要求,该材料包括使含钛溶液反应,其中溶解的钛的浓度等于10-250 g二氧化钛每升溶液,以及一种或多种硅氧化合物的水合前体的低碱溶液,在氨水的存在下进行过滤,洗涤,热处理和干燥。

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