机动车尾气净化用堇青石蜂窝陶瓷研究中的若干问题

 堇青石蜂窝陶瓷以其优异的热性能和机械性能,在机动车尾气净化中广泛用作催化转化器载体、颗粒物捕集器等,是机动车尾气净化中的一类关键材料。随着尾气排放标准的日益严格,对堇青石蜂窝陶瓷的规格和性能提出了更高的要求。基于堇青石蜂窝陶瓷的挤出法生产,从工艺路线、原料规格、杂质元素的影响等方面入手,总结了国内外的研究现状,并探讨了进一步提高产品品质的可能途径,以提高中国堇青石蜂窝陶瓷产品的国际竞争力,促进相关产业的发展与进步。

Cordierite Honeycomb Ceramics Used for Purification of Vehicle Exhaust

Cordierite honeycomb ceramic is one of key materials for vehicle exhaust purification as a support material in catalytic converters and diesel particulate filters, owing to its superior thermal and mechanical properties. In view of more and more stringent emission standards, the improvement of cordierite honeycomb ceramic becomes an important issue, especially in product specifications and performances. The extrusion method of cordierite honeycomb is reviewed in this paper with focuses on the process choice, raw materials specifications and impurity elements. In the context of the huge market demand for cordierite honeycomb ceramics, some key problems are discussed, including the possible routes to improve the product quality and the challenge of the international competitiveness.