摘要:
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during operation. In the purification catalyst of the present invention, Pd is supported by an aluminum composite oxide having a perovskite structure, the aluminum composite oxide is LnAl1−xMxO3 in which Ln is a rare-earth element, and the element M in the LnAl1−xMxO3 is one of elements in groups 1 to 5 and groups 12 to 14.
摘要翻译:用于废气的净化催化剂增强贵金属的活性,防止高温下的活性降低,并且在操作期间表现出令人满意的性能。 在本发明的纯化催化剂中,Pd由具有钙钛矿结构的铝复合氧化物负载,铝复合氧化物为LnAl 1-x M x O O > 3 sub>其中Ln是稀土元素,并且LnAl 1-x M x O 3 3中的元素M SUB >是组1至5和组12至14中的元素之一。
摘要:
A catalyst for exhaust gas purification is provided that can not only efficiently and simultaneously purify nitrogen oxides, hydrocarbons and carbon monoxide in exhaust gas emitted from internal combustion engines such as those of automobiles even at lower temperatures, but also exhibits higher durability. The coexistence of a complex oxide that includes a rare earth element and palladium, a rare earth oxide, and a perovskite-type complex oxide that is expressed by the general formula LnAlO3, in which Ln is a rare earth element, may provide a catalyst that not only efficiently purifies the exhaust gas emitted from internal combustion engines such as those of automobiles even at lower temperatures, but also exhibits higher durability.
摘要:
A purification catalyst for exhaust gas which exhibits satisfactory performance even at a low temperature operation of starting or idling of engine (not more than 400° C.), and a production method therefore are provided.The catalyst comprises an aluminum oxide supporting Pd, and the aluminum oxide is LnAlO3 (Ln: rare-earth metal).
摘要:
A catalyst for exhaust gas purification is provided that can not only efficiently and simultaneously purify nitrogen oxides, hydrocarbons and carbon monoxide in exhaust gas emitted from internal combustion engines such as those of automobiles even at lower temperatures, but also exhibits higher durability. The coexistence of a complex oxide that includes a rare earth element and palladium, a rare earth oxide, and a perovskite-type complex oxide that is expressed by the general formula LnAlO3, in which Ln is a rare earth element, may provide a catalyst that not only efficiently purifies the exhaust gas emitted from internal combustion engines such as those of automobiles even at lower temperatures, but also exhibits higher durability.
摘要:
A purification catalyst for exhaust gas enhances the activity for each precious metal by effectively utilizing the precious metal without incurring a high production cost, thereby improving endurance. The purification catalyst for exhaust gas comprises a composite oxide supporting Pd, the composite oxide has a rational formula MXO3 in which M is an alkali metal element and X is an element in group 5 in periodic table, and a perovskite crystal structure.
摘要:
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during operation. In the purification catalyst of the present invention, Pd is supported by an aluminum composite oxide having a perovskite structure, the aluminum composite oxide is LnAl1-xMxO3 in which Ln is a rare-earth element, and the element M in the LnAl1-xMxO3 is one of elements in groups 1 to 5 and groups 12 to 14.
摘要翻译:用于废气的净化催化剂增强贵金属的活性,防止高温下的活性降低,并且在操作期间表现出令人满意的性能。 在本发明的纯化催化剂中,Pd由具有钙钛矿结构的铝复合氧化物负载,铝复合氧化物为LnAl 1-x M x O O > 3 sub>其中Ln是稀土元素,并且LnAl 1-x M x O 3 3中的元素M SUB >是组1至5和组12至14中的元素之一。
摘要:
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during operation. In the purification catalyst of the present invention, Pd is supported by an aluminum composite oxide having a perovskite structure, the aluminum composite oxide is LnAl1-xMxO3 in which Ln is a rare-earth element, and the element M in the LnAl1-xMxO3 is one of elements in groups 1 to 5 and groups 12 to 14.
摘要:
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during operation. In the purification catalyst of the present invention, Pd is supported by an aluminum composite oxide having a perovskite structure, the aluminum composite oxide is LnAl1-xMxO3 in which Ln is a rare-earth element, and the element M in the LnAl1-xMxO3 is one of elements in groups 1 to 5 and groups 12 to 14.
摘要:
A purification catalyst for exhaust gas which exhibits satisfactory performance even at a low temperature operation of starting or idling of engine (not more than 400° C.), and a production method therefor are provided.The catalyst comprises an aluminum oxide supporting Pd, and the aluminum oxide is LnAlO3 (Ln: rare-earth metal).
摘要:
A purification catalyst for exhaust gas enhances the activity for each precious metal by effectively utilizing the precious metal without incurring a high production cost, thereby improving endurance. The purification catalyst for exhaust gas comprises a composite oxide supporting Pd, the composite oxide has a rational formula MXO3 in which M is an alkali metal element and X is an element in group 5 in periodic table, and a perovskite crystal structure.