There are at least three obvious trends in the developments of automotive market in China: the evolution of emission standards from Euro Ⅱ to Euro Ⅲ, the demand of lean-burn gasoline engine and the time of diesel ve...There are at least three obvious trends in the developments of automotive market in China: the evolution of emission standards from Euro Ⅱ to Euro Ⅲ, the demand of lean-burn gasoline engine and the time of diesel vehicles. The latest application and advances of exhaust catalysts by Chinese researchers, using some high effcient, economical and durable methods to meet these changes in emission regulations laws and engine technologies, were described. Rare earth oxides, such as lanthana, ceria-based solid solutions and perovskite-type oxides, are widely used as excellent promoters for thermal stability, oxygen storage capacity and oxidation/reduction activity in these catalysts. Four phases in the development of the auto exhaust catalyst industry in China since the mid 1970s were reviewed. It is argued that China will become the center of global auto exhaust catalysts industry in the next decades with its economic, technical and environmental incentives, which greatly depends on the research and development of rare earth.展开更多
应用微反装置研究了以堇青石为第一载体,以含一定La/Ce的γ Al2O3超细活性铝胶浆作涂层的复合载体活性和低钯含量(0.8‰)催化剂Pd La Ce,Pd Ni La Ce的活性,对催化剂进行了TPR,CO TPD和O2 TPD表征;研究并探讨了Ni在催化剂中良好的助催...应用微反装置研究了以堇青石为第一载体,以含一定La/Ce的γ Al2O3超细活性铝胶浆作涂层的复合载体活性和低钯含量(0.8‰)催化剂Pd La Ce,Pd Ni La Ce的活性,对催化剂进行了TPR,CO TPD和O2 TPD表征;研究并探讨了Ni在催化剂中良好的助催化作用;通过对加不同竟争吸附剂的400目催化剂进行怠速实验和活性比较,找出了活性组分Pd在负载型催化剂上的最佳分布状态,开发出了具有良好氧化活性的低钯型Pd Ni La Ce汽车尾气净化催化剂。展开更多
文摘There are at least three obvious trends in the developments of automotive market in China: the evolution of emission standards from Euro Ⅱ to Euro Ⅲ, the demand of lean-burn gasoline engine and the time of diesel vehicles. The latest application and advances of exhaust catalysts by Chinese researchers, using some high effcient, economical and durable methods to meet these changes in emission regulations laws and engine technologies, were described. Rare earth oxides, such as lanthana, ceria-based solid solutions and perovskite-type oxides, are widely used as excellent promoters for thermal stability, oxygen storage capacity and oxidation/reduction activity in these catalysts. Four phases in the development of the auto exhaust catalyst industry in China since the mid 1970s were reviewed. It is argued that China will become the center of global auto exhaust catalysts industry in the next decades with its economic, technical and environmental incentives, which greatly depends on the research and development of rare earth.
文摘应用微反装置研究了以堇青石为第一载体,以含一定La/Ce的γ Al2O3超细活性铝胶浆作涂层的复合载体活性和低钯含量(0.8‰)催化剂Pd La Ce,Pd Ni La Ce的活性,对催化剂进行了TPR,CO TPD和O2 TPD表征;研究并探讨了Ni在催化剂中良好的助催化作用;通过对加不同竟争吸附剂的400目催化剂进行怠速实验和活性比较,找出了活性组分Pd在负载型催化剂上的最佳分布状态,开发出了具有良好氧化活性的低钯型Pd Ni La Ce汽车尾气净化催化剂。
