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 MgxAl2(1+x)Ti(1+x)O5 (wherein 0
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 MgxAl2(1−x)Ti(1+x)O5 (wherein 0.1≦x
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,因此可以稳定地在可变高温下使用的钛酸铝镁晶体结构体及其制造方法。 一种钛酸镁晶体结构,其是以经验式Mg x Al 2(1-x)表示的钛酸镁镁晶体的表面层中的至少一些Al原子的固溶体, x)Ti(1 + x)O 5(其中0.1 <= x <1)被Si原子取代,并且具有热膨胀系数 (1 / K)至6×10 -6(1 / K)的范围为50至800℃,温度升高 速度为20℃/分钟,钛酸镁镁的剩余比率为至少50%,当在1100℃的气氛中保持300小时时。
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 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 aluminum magnesium titanate represented by the empirical formula MgxAl2(1−x)Ti(1+x)O5 (wherein 0
摘要翻译:为了提供一种用于清洁排气的蜂窝过滤器,其耐热性和耐热冲击性优异,并且具有高耐热分解性和高机械强度,因此能够在高且波动的温度下稳定地使用, 其生产。 一种用于除去在废气中含有碳作为主要成分的微细固体颗粒的蜂窝过滤器,其特征在于,用于蜂窝过滤器的材料是通过在1000至1700℃下煅烧获得的成形产品, 以与经验式Mg所表示的钛酸镁镁中的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, (1-x)Ti(1 + x)O 5(其中0 1-y)AlSi 3 O 8(其中0 <= y <= 1)。
摘要:
The present invention provides a process for preparing an aluminum-titanate-based sintered body comprising the step of firing, at 1250 to 1700° C., a formed product prepared from a raw material mixture containing 100 parts by weight of a mixture of TiO2 and Al2O3 in a weight ratio of TiO2:Al2O3=40:60 to 60:40, and 1 to 15 parts by weight of an alkali feldspar represented by the formula:(NaxK1-x)AlSi3O8 wherein 0≦x≦1.According to the process of the present invention, it is possible to obtain an aluminum-titanate-based sintered body in which inherent properties of an aluminum titanate, i.e., a low coefficient of thermal expansion and high corrosion resistance are maintained, the mechanical strength thereof is improved, and which can be stably used even under high temperature conditions.
摘要翻译:本发明提供了一种制备钛酸铝系烧结体的方法,其包括在1250〜1700℃下烧成由含100重量份TiO 2和 Al 2 O 3:TiO 2:Al 2 O 3 = 40:60至60:40的重量比,和1至15重量份由下式表示的碱长石:(NaxK1-x)AlSi3O8,其中0&nlE; x&nlE; 1。 根据本发明的方法,可以获得其中钛酸铝的固有性质(即,低热膨胀系数和高耐腐蚀性)保持其固有性质的钛酸铝系烧结体,其机械强度 得到改善,即使在高温条件下也能够稳定地使用。
摘要:
Provided is a honeycomb filter which includes an aluminum titanate sintered product obtained by a process involving firing at a temperature of 1,250-1,700° C. a raw material mixture composed of: 100 wt. % of a first mixture having TiO2 and Al2O3 in a molar ratio of 40-60/60-40; and 1-10 wt. % of a second mixture composed of: an alkali feldspar according to the formula NayK1-yAlSi3O8, wherein 0≦y≦1; and a component selected from an oxide having a spinel structure composed of Mg and/or MgO, MgO and a precursor compound composed of Mg that is converted to MgO by firing, wherein the honeycomb filter exhibits excellent properties with respect to mechanical strength, thermal decomposition resistance, thermal shock resistance and thermal stability at high and fluctuating temperatures. Also provided is a method and an apparatus for cleaning an exhaust gas by removing solid particles predominantly containing carbon from the exhaust gas with the honeycomb filter. Also provided is a process for producing the honeycomb filter.
摘要:
The present invention provides a raw material composition for preparing a sintered body of aluminum titanate, the composition comprising (i) 100 parts by weight of a mixture comprising 40 to 50 mol % of TiO2 and 60 to 50 mol % of Al2O3, (ii) 1 to 10 parts by weight of an alkali feldspar represented by the formula: (NaxK1−x)AlSi3O8 (0≦x≦1), and (iii) 1 to 10 parts by weight of at least one Mg-containing component selected from the group consisting of a Mg-containing oxide with spinel structure, MgCO3 and MgO, and a process for preparing a sintered body of aluminum titanate comprising sintering a formed product prepared from the raw material composition at 1300 to 1700° C. According to the present invention, a sintered body of aluminum titanate having high mechanical strength and ability to be stably used at high temperatures, as well as its inherent properties of low coefficient of thermal expansion and high corrosion resistance, can be obtained.
摘要翻译:本发明提供了一种用于制备钛酸铝烧结体的原料组合物,该组合物包含(i)100重量份的包含40-50摩尔%的TiO 2和60至50的混合物 (ii)1至10重量份由下式表示的碱长石:(Na 2 O 3)3, (0 <= x <= 1),和(iii)1至10重量份 的至少一种选自具有尖晶石结构的含Mg氧化物,MgCO 3和MgO的含Mg组分,以及制备钛酸铝的烧结体的方法,包括烧结形成的 根据本发明,具有高机械强度和在高温下稳定使用的能力的钛酸铝烧结体以及其低系数的固有特性 热膨胀 可以获得高耐腐蚀性。
摘要:
A honeycomb carrier for an exhaust gas-cleaning catalyst to clean e.g. an exhaust gas of an automobile particularly containing NOx, wherein 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 MgxAl2(1+x)Ti(1+x)O5 (wherein 0≦x≦1), and from 1 to 10 parts by mass of an alkali feldspar represented by the empirical formula (NayK1−y)AlSi3O8 (wherein 0≦y≦1).
摘要翻译:一种用于清洁废气清洁催化剂的蜂窝载体。 特别是含有NOx的汽车的废气,其特征在于,所述蜂窝状载体的材料是将烧结体为1000〜1700℃的烧结体,由100质量份的原料混合物形成的成型体, 以与氧化物计算的包含含镁化合物,含Al化合物和含Ti化合物的混合物以与镁,钛和钛的金属组分比相同的金属组分比率表示在由铝 经验式Mg x Al 2(1 + x)Ti(1 + x)O 5(其中0&nlE; x&nlE; 1)和1至10质量份由经验式(NayK1-y)AlSi3O8表示的碱性长石(其中 0&nlE; y&nlE; 1)。
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 MgxAl2(1−x)Ti(1+x)O5 (wherein 0.1≦x
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,因此可以稳定地在可变高温下使用的钛酸铝镁晶体结构体及其制造方法。 钛酸铝镁晶体结构,其为由经验式Mg x Al 2(1-x)Ti(1 + x)O 5(1-x)O 5(1-x)O 5)表示的铝酸镁镁晶体的表面层中的至少一些Al原子的固溶体 x <1)被Si原子取代,其热膨胀系数为-6×10-6(1 / K)至6×10-6(1 / K),范围为50至800° C.在20℃/分钟的升温速度下,将钛酸镁镁的剩余比例保持在1100℃的气氛中至少为50%。
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 TiO2 and Al2O3 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 (NayK1-y)AlSi3O8 (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:为了提供一种用于清洁排气的蜂窝过滤器,其具有优异的耐热性和耐热冲击性,并且具有高耐热分解性和高机械强度,因此能够在高和波动的温度下稳定地使用,以及工艺 为其生产。 一种蜂窝过滤器,用于除去废气中含有碳的固体颗粒作为主要成分,其特征在于,所述蜂窝过滤器用材料是通过在1250℃〜1700℃下烧成而得到的钛酸铝烧结体, 质量份含有前者/后者的摩尔比的TiO 2和Al 2 O 3 3的混合物(组分X)为 40〜60/60〜40,以及1〜10质量份由经验式(Na + Y 1 -Y)表示的碱性长石AlSi 其中0≤y≤1的氧化物,具有包含Mg的尖晶石结构的氧化物或MgO或含Mg的化合物,其将通过 点火(分量Y)。
摘要:
The present invention provides a process for preparing an aluminum-titanate-based sintered body comprising the step of firing, at 1250 to 1700° C., a formed product prepared from a raw material mixture containing 100 parts by weight of a mixture of TiO2 and Al2O3 in a weight ratio of TiO2:Al2O3=40:60 to 60:40, and 1 to 15 parts by weight of an alkali feldspar represented by the formula:(NaxK1-x)AlSi3O8 wherein 0≦x≦1.According to the process of the present invention, it is possible to obtain an aluminum-titanate-based sintered body in which inherent properties of an aluminum titanate, i.e., a low coefficient of thermal expansion and high corrosion resistance are maintained, the mechanical strength thereof is improved, and which can be stably used even under high temperature conditions.
摘要翻译:本发明提供了一种制备钛酸铝系烧结体的方法,其包括在1250〜1700℃下烧成由含100重量份TiO 2的混合物的原料混合物制备的成形体, 2→2和2→2→3→3→2→2→2→3→2→2→2→2→2→ O 3 = 40:60〜60:40,和1〜15重量份的由下式表示的碱长石:(Na + 1&lt; 1&lt; 其中0 <= x <= 1。 根据本发明的方法,可以获得其中钛酸铝的固有性质(即,低热膨胀系数和高耐腐蚀性)保持其固有性质的钛酸铝系烧结体,其机械强度 得到改善,即使在高温条件下也能够稳定地使用。