首页> 外国专利> process of manufacturing a honeycomb porous silicon carbide structure, honeycomb porous silicon carbide structure and use of a honeycomb structure

process of manufacturing a honeycomb porous silicon carbide structure, honeycomb porous silicon carbide structure and use of a honeycomb structure

机译:蜂窝状多孔碳化硅结构的制造方法,蜂窝状多孔碳化硅结构以及蜂窝结构的用途

摘要

The invention relates to a process for manufacturing a porous silicon carbide structure of the honeycomb type, said process being characterized in that it comprises the following steps: forming of a paste from a mixture of silicon carbide grains, the diameter d50 of which is between 5 mum and 300 mum, of an organic binder and of an inorganic pore former, in the form of particles based on silica, the overall porosity of said particles being greater than 70%; forming of a honeycomb-shaped green plastic monolith; drying of said monolith; and firing of the monolith at a temperature greater than 2100° C. The structure obtained by the process may be used as catalytic support in an exhaust line of a diesel or petrol engine or as particulate filter in an exhaust line of a diesel engine.
机译:本发明涉及一种制造蜂窝型多孔碳化硅结构的方法,其特征在于,它包括以下步骤:由碳化硅颗粒的混合物形成糊状物,其直径d50在5到5之间。至少300μm的有机粘合剂和无机成孔剂,基于二氧化硅的颗粒形式,所述颗粒的总孔隙率大于70%;形成蜂窝状绿色塑料整料;干燥所述整料;通过该方法获得的结构可以用作柴油或汽油发动机的排气管线中的催化载体,或用作柴油发动机的排气管线中的微粒过滤器。

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