Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Honeycomb filter and method for manufacturing honeycomb filters
A honeycomb filter is made from a honeycomb fired body comprising porous cell partitions that separate and form a plurality of cells serving as exhaust gas channels; an exhaust gas introduction cell wherein an exhaust gas inlet side end is opened and an exhaust gas outlet side end is seam-sealed; and an exhaust gas exhaust cell wherein an exhaust gas outlet side end is opened and an exhaust gas inlet side end is seam-sealed. The honeycomb filter is characterized in that the honeycomb fired body is formed from ceria-zirconia composite oxide particles and alumina particles and in that, when thesize of the cell partition pores in the honeycomb fired body is measured by a mercury penetration method and the measurement results are displayed as a pore size distribution curve with the horizontalaxis being the pore size micrometer and the vertical axis being the logarithmic differential pore volume (mL/g), the percentage of the volume accounted for by micropores with a pore size of 1-100 micrometer is 80 vol% or more of the total pore volume and a value of 0.5 or less is obtained when the maximum peak for half width (micrometer) formed in a range where the pore size is 1-100 micrometer is divided by the mode diameter (micrometer).
本发明的蜂窝过滤器是由蜂窝烧制体构成的蜂窝过滤器，该蜂窝烧制体具备：多孔质的孔道隔壁，其分隔形成作为尾气流路的多个孔道；尾气导入孔道，其中，尾气入口侧的端部开口且尾气出口侧的端部被封孔；和尾气排出孔道，其中，尾气出口侧的端部开口且尾气入口侧的端部被封孔，该蜂窝过滤器的特征在于，上述蜂窝烧制体由二氧化铈‑氧化锆复合氧化物颗粒和氧化铝颗粒构成，通过压汞法测定上述蜂窝烧制体的上述孔道隔壁的气孔径，将其测定结果以横轴为气孔径(μm)、纵轴为log微分细孔容积(mL/g)的气孔径分布曲线的形式表示时，气孔径为1～100μm的大气孔所占的体积的比例是气孔的总体积的80体积％以上，将在气孔径为1～100μm的范围形成的最大峰的半峰宽(μm)除以众数直径(μm)所得到的值为0.5以下。
Honeycomb filter and method for manufacturing honeycomb filters
A honeycomb filter is made from a honeycomb fired body comprising porous cell partitions that separate and form a plurality of cells serving as exhaust gas channels; an exhaust gas introduction cell wherein an exhaust gas inlet side end is opened and an exhaust gas outlet side end is seam-sealed; and an exhaust gas exhaust cell wherein an exhaust gas outlet side end is opened and an exhaust gas inlet side end is seam-sealed. The honeycomb filter is characterized in that the honeycomb fired body is formed from ceria-zirconia composite oxide particles and alumina particles and in that, when thesize of the cell partition pores in the honeycomb fired body is measured by a mercury penetration method and the measurement results are displayed as a pore size distribution curve with the horizontalaxis being the pore size micrometer and the vertical axis being the logarithmic differential pore volume (mL/g), the percentage of the volume accounted for by micropores with a pore size of 1-100 micrometer is 80 vol% or more of the total pore volume and a value of 0.5 or less is obtained when the maximum peak for half width (micrometer) formed in a range where the pore size is 1-100 micrometer is divided by the mode diameter (micrometer).
本发明的蜂窝过滤器是由蜂窝烧制体构成的蜂窝过滤器，该蜂窝烧制体具备：多孔质的孔道隔壁，其分隔形成作为尾气流路的多个孔道；尾气导入孔道，其中，尾气入口侧的端部开口且尾气出口侧的端部被封孔；和尾气排出孔道，其中，尾气出口侧的端部开口且尾气入口侧的端部被封孔，该蜂窝过滤器的特征在于，上述蜂窝烧制体由二氧化铈‑氧化锆复合氧化物颗粒和氧化铝颗粒构成，通过压汞法测定上述蜂窝烧制体的上述孔道隔壁的气孔径，将其测定结果以横轴为气孔径(μm)、纵轴为log微分细孔容积(mL/g)的气孔径分布曲线的形式表示时，气孔径为1～100μm的大气孔所占的体积的比例是气孔的总体积的80体积％以上，将在气孔径为1～100μm的范围形成的最大峰的半峰宽(μm)除以众数直径(μm)所得到的值为0.5以下。
Honeycomb filter and method for manufacturing honeycomb filters
蜂窝过滤器和蜂窝过滤器的制造方法
USUI TOYOHIRO (Autor:in) / HIGUCHI TATSUHIRO (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
B01D
SEPARATION
,
Trennen
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C04B
Kalk
,
LIME
/
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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