Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cordierite heat shock resistant thin-wall catalyst carrier and preparation method thereof
The invention discloses a cordierite heat shock resistant thin-wall catalyst carrier and a preparation method thereof, the cordierite heat shock resistant thin-wall catalyst carrier is mainly used for diesel engine tail gas post-treatment, the main raw materials comprise talc, kaolin, alumina, silica and cordierite powder, and auxiliary materials such as a pore forming agent, an adhesive, an extrusion auxiliary agent and a dispersant are added at the same time. The catalyst carrier can reach CTE being less than or equal to 0.2*10<-6>/DEG C (RT-800 DEG C) and thermal shock resistance temperature of more than 750 DEG C under the condition of proper condition control; the thin-wall catalyst carrier with low thermal expansion coefficient, thermal shock resistance and proper pore size distribution is prepared by optimizing the grain composition of the raw materials, adding a proper pore-forming agent and adjusting a sintering process, and the thin-wall catalyst carrier can ensure that the thin-wall catalyst carrier has relatively low thermal capacity, relatively low back pressure and relatively good coating performance at the same time.
本发明公开了一种堇青石耐热冲击薄壁催化剂载体及其制备方法，主要用于柴油机尾气后处理，其主要原材料包括滑石、高岭土、氧化铝、二氧化硅、堇青石粉，同时添加造孔剂、粘接剂、挤压助剂、分散剂等辅料。所述催化剂载体，在条件控制恰当的情况下，可以达到CTE≤0.2×10‑6/℃(RT‑800℃)，抗热冲击温度达到750℃以上；本发明通过优化原材料颗粒级配、加入合适造孔剂、调整烧结工艺制备出了具备低热膨胀系数、耐热冲击性、合适孔径分布的薄壁催化剂载体，该薄壁催化剂载体可以保证同时具备较低热容量、较低背压以及较好的涂覆性能。
Cordierite heat shock resistant thin-wall catalyst carrier and preparation method thereof
The invention discloses a cordierite heat shock resistant thin-wall catalyst carrier and a preparation method thereof, the cordierite heat shock resistant thin-wall catalyst carrier is mainly used for diesel engine tail gas post-treatment, the main raw materials comprise talc, kaolin, alumina, silica and cordierite powder, and auxiliary materials such as a pore forming agent, an adhesive, an extrusion auxiliary agent and a dispersant are added at the same time. The catalyst carrier can reach CTE being less than or equal to 0.2*10<-6>/DEG C (RT-800 DEG C) and thermal shock resistance temperature of more than 750 DEG C under the condition of proper condition control; the thin-wall catalyst carrier with low thermal expansion coefficient, thermal shock resistance and proper pore size distribution is prepared by optimizing the grain composition of the raw materials, adding a proper pore-forming agent and adjusting a sintering process, and the thin-wall catalyst carrier can ensure that the thin-wall catalyst carrier has relatively low thermal capacity, relatively low back pressure and relatively good coating performance at the same time.
本发明公开了一种堇青石耐热冲击薄壁催化剂载体及其制备方法，主要用于柴油机尾气后处理，其主要原材料包括滑石、高岭土、氧化铝、二氧化硅、堇青石粉，同时添加造孔剂、粘接剂、挤压助剂、分散剂等辅料。所述催化剂载体，在条件控制恰当的情况下，可以达到CTE≤0.2×10‑6/℃(RT‑800℃)，抗热冲击温度达到750℃以上；本发明通过优化原材料颗粒级配、加入合适造孔剂、调整烧结工艺制备出了具备低热膨胀系数、耐热冲击性、合适孔径分布的薄壁催化剂载体，该薄壁催化剂载体可以保证同时具备较低热容量、较低背压以及较好的涂覆性能。
Cordierite heat shock resistant thin-wall catalyst carrier and preparation method thereof
一种堇青石耐热冲击薄壁催化剂载体及其制备方法
LI YI (Autor:in) / NIE DA (Autor:in) / WANG JIANJU (Autor:in) / ZHANG HAIBO (Autor:in) / CHEN HONG (Autor:in) / WANG HAO (Autor:in) / CAO JIANGFENG (Autor:in)
11.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
F01N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
,
Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein
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