摘要:
To provide a honeycomb filter for cleaning an exhaust gas, which is excellent in heat resistance and thermal shock resistance and has high thermal decomposition resistance and high mechanical strength and which is thus capable of being used with stability at high and fluctuating temperatures, and a process for its production. A honeycomb filter for removing solid particles containing carbon as the main component in an exhaust gas, characterized in that the material for the honeycomb filter is an aluminum titanate sintered product obtained by firing at from 1,250 to 1,700°C a raw material mixture comprising 100 parts by mass of a mixture (component X) comprising TiO 2 and Al 2 O 3 in a molar ratio of the former/the latter being 40 to 60/60 to 40, and from 1 to 10 parts by mass of an alkali feldspar represented by the empirical formula (Na y K 1-y )AlSl 3 O 8 (wherein 0≦y≦1), an oxide having a spinel structure containing Mg, or MgO or an Mg-containing compound which will be converted to MgO by firing (component Y).
摘要翻译:本发明提供一种耐热性和耐热冲击性优异,耐热分解性和机械强度高,并且能够在高温,变动温度下稳定地使用的废气净化用蜂窝过滤器以及工序 为其生产。 1.一种用于去除废气中含有碳作为主要成分的固体颗粒的蜂窝式过滤器,其特征在于用于蜂窝式过滤器的材料是钛酸铝烧结产品,其通过在1250至1700℃下煅烧由100份 以前者/后者的摩尔比为40〜60/60〜40的TiO 2和Al 2 O 3的混合物(成分X),以及1〜10质量份的由实验式 N y K 1-y)AlS 13 O 8(其中0≤y≤1),具有含Mg的尖晶石结构的氧化物,或MgO或将通过烧制转化为MgO的含Mg化合物(组分Y)。
摘要:
To provide an aluminum magnesium titanate crystal structure which can be used stably in variable high temperatures, because of its excellent heat resistance, thermal shock resistance, high thermal decomposition resistance and high mechanical property, and a process for its production. An aluminum magnesium titanate crystal structure, which is a solid solution wherein at least some of Al atoms in the surface layer of aluminum magnesium titanate crystal represented by the empirical formula Mg x Al 2(1-x) Ti (1+x) O 5 (wherein 0.1‰¦x
摘要:
To provide an aluminum magnesium titanate crystal structure which can be used stably in variable high temperatures, because of its excellent heat resistance, thermal shock resistance, high thermal decomposition resistance and high mechanical property, and a process for its production. An aluminum magnesium titanate crystal structure, which is a solid solution wherein at least some of Al atoms in the surface layer of aluminum magnesium titanate crystal represented by the empirical formula Mg x Al 2(1-x) Ti (1+x) O 5 (wherein 0.1≦x -6 (1/K) to 6×10 -6 (1/K) in a range of from 50 to 800°C at a temperature raising rate of 20°C/min, and a remaining ratio of aluminum magnesium titanate of at least 50%, when held in an atmosphere of 1,100°C for 300 hours.
摘要翻译:由于其耐热性,耐热冲击性,高耐热分解性和高机械性能优异,因此可提供可变高温下稳定使用的钛酸铝镁晶体结构及其制造方法。 钛酸铝镁晶体结构体,其为由经验式Mg x Al 2(1-x)Ti(1 + x)O 5(1-x)Ti(1-x))5表示的钛酸铝镁晶体的表面层中的至少一部分Al原子的固溶体 (其中0.1‰| x <1)被Si原子取代,并且其热膨胀系数为-6×10 -6(1 / K)至6×10 -6(1 / K) 50℃至800℃,升温速度为20℃/分钟,钛酸镁镁的剩余比率为至少50%,在1100℃的气氛中保持300小时。
摘要:
A honeycomb filter for removing solid particles containing carbon as their main component in an exhaust gas, characterized in that the material of said honeycomb filter is the aluminum titanate prepared by firing, at 1250 to 1700°C, a raw material mixture containing 100 parts by mass of a mixture (referred to as an X component) containing TiO2 and Al2O3 in a mole ratio of the former/the latter of 40 to 60/60 to 40 and 1 to 10 parts by mass of alkali feldspar represented by the empirical formula: (NayK1-y)AlSi3O8 [wherein 0
摘要:
To provide a honeycomb carrier to support a catalyst to clean e.g. an exhaust gas of an automobile particularly containing NOx, which is excellent in heat resistance, thermal shock resistance, mechanical strength and thermal decomposition resistance and has a great corrosion resistance to a catalyst, and is thus capable of being used with stability for a long period of time, and a process for its production. The material for the honeycomb carrier is an aluminum magnesium titanate sintered product obtained by firing at from 1,000 to 1,700°C a molded product formed from a raw material mixture comprising 100 parts by mass, as calculated as oxides, of a mixture comprising a Mg-containing compound, an Al-containing compound and a Ti-containing compound in the same metal component ratio as the metal component ratio of Mg, Al and Ti in an aluminum magnesium titanate represented by the empirical formula Mg x Al 2(1+x) Ti (1+x) O 5 (wherein 0 y K 1-y ) AlSi 3 O 8 (wherein 0≦y≦1) .
摘要翻译:提供蜂窝载体以支持催化剂清洁例如 特别是含有NOx的汽车的废气,其耐热性,耐热冲击性,机械强度和耐热分解性优异,并且对催化剂具有很大的耐腐蚀性,因此能够长时间稳定地使用 的时间,以及其生产过程。 蜂窝载体的材料是钛酸铝镁烧结体,其烧成体积为1000〜1700℃,由原料混合物形成的成型体,该原料混合物含有按氧化物计算的100质量份的含Mg- 以与经验式Mg x Al 2(1 + x)表示的铝镁酸镁中的Mg,Al和Ti的金属成分比例相同的金属成分比例的含铝化合物,含Al化合物和含Ti化合物, Ti(1 + x)O 5(其中0
摘要:
To provide a honeycomb filter for cleaning exhaust gas, which is excellent in heat resistance and thermal shock resistance and has high thermal decomposition resistance and high mechanical strength and which is thus capable of being used with stability at high and fluctuating temperatures, and a process for its production. A honeycomb filter for removing fine solid particles containing carbon as the main component in an exhaust gas, characterized in that the material for the honeycomb filter is an aluminum magnesium titanate sintered product obtained by firing at from 1000 to 1700°C a formed product from a mixture comprising a Mg-containing compound, an A1-containing compound and a Ti-containing compound in the same metal component ratio as the metal component ratio of Mg, Al and Ti in aluminum magnesium titanate represented by the empirical formula Mg x Al 2(1-x) Ti (1+x) O 5 (wherein 0 y K 1-y )AlSi 3 O 8 (wherein 0≦y≦1).
摘要翻译:本发明提供一种耐热性和耐热冲击性优异,耐热分解性和机械强度高,并且能够在高温,变动的温度下稳定地使用的废气净化用蜂窝过滤器以及 其生产。 1.一种用于除去废气中含有碳作为主要成分的细固体颗粒的蜂窝式过滤器,其特征在于,所述蜂窝式过滤器的材料是通过在1000〜1700℃下由 以与实验式Mg x Al 2(1-x)所示的钛酸铝镁中的Mg,Al和Ti的金属成分比例相同的金属成分比例含有含Mg化合物,含Al化合物和含Ti化合物的混合物 )Ti(1 + x)O 5(其中0