蜂窝陶瓷催化剂载体介绍

用于汽油发动机尾气净化系统的直通式陶瓷催化剂载体,在载体表面涂上催化剂,通过高几何接触表面积和低热容量,提高催化剂性能,在汽车尾气通过时,将尾气中的HC、CO、NO等有害成份变成无害成份.

柴油汽车尾气微粒子陶瓷滤清器(DPF)以蜂窝式陶瓷载体材料技术为基础,以堇青石或碳化硅为原料,针对柴油发动机排放尾气中的微粒子,能发挥卓越的截留效果,广泛应用于柴油汽车、城市公共汽车,重型卡车、矿内作业车及叉车.

必备性能:

1、大的比表面积:保证废气与催化剂的充分接触。

2、稳定的吸水性能:确保催化剂牢固地均匀涂附在载体的表面,同时不因过厚的涂附带来浪费.

3、暖机性:要求发动机在启动后,载体的温度能在最短的时间内达到催化剂的活性温度.

4、低的排气阻力:要求载体对发动机的排气阻力很小,确保不影响发动机的性能.

5、高强度性:由于载体的工作环境是在颠簸的汽车上,因此要求载体具备较高的强度而不被外力破坏.

6、良好的组装性:载体是排气总成的一个零件,只有良好的外观以及精确的尺寸才能确保组装的完美.

used as catalytic converters of gasoline engines, the honeycomb ceramic catalyst substrates are coated by catalyst; at the same time , we improve the specific surface areas and cut down the heat capacity to increase the catalytic function. When the noxious emissions pass through, HC, CO and NOX will be converted into harmless components. Diesel particular filter bases on honeycomb ceramic substrate, whose materials are cordierite or carborundum. It could trap the particulate matter from diesel exhaust emissions, so they are applied on cars, buses, trucks and so on

The necessary property of honeycomb ceramic catalyst substrate used in cars as follows:

A).High specific surface area: ensure exhaust gas could contact weigh catalyst enough.

B).Stable water absorption: guarantee catalyst could be firmly and evenly coated on the surface of substrate, so it's no waste for too thick coating.

C).Warm-up characters: after starting up engine, the temperature of substrate could reach the active temperature of catalyst in the shortest time.

D).Low exhaust resistance: ask exhaust resistance of substrate to engine low, so that it won’t affect the performance of engine

E).high intensity: substrates work in bumpy cars, so the intensity of substrates must be too high to be destroyed

F).perfect assembly: substrates are parts of exhaust; perfect appearance and exact dimension could ensure assembly perfect.

Material: cordierite silicon carbide

Size: according to clients' requirement