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- TWC three way catalyst converter 三元催化转换器
- This paper introduces some kinds of catalysts for automobile exhaust purification, such as Three Way Catalysts (TWCs), perovskite oxide catalyst, and molecular sieve catalyst by metal ions. 综述了目前国际上催化消除汽车尾气催化剂的研究现状,分析了三效贵金属催化剂、钙钛矿氧化物催化剂、分子筛催化剂各自的优势和存在的问题。
- Keywords ceria;lanthana;three way catalyst;precious metal; 氧化铈;氧化镧;三效催化剂;贵金属;
- The three way catalysts promoters (Ce Zr)O 2, (Pr Ce Zr)O 2 and (Pr Zr)O 2 were prepared by sol gel method with some special procedures. They were characterized by XRD, EXAFS and BET surface area determination. 采用溶胶 凝胶法制备了三效催化剂助剂 (Ce Zr)O2 ,(Pr Ce Zr)O2 和 (Pr Zr)O2 ,并对它们进行了XRD ,EXAFS和BET比表面的测定。
- The type and the component of three way catalysts (TWC), the role of rare earth elements in TWC, the application prospect of rare earth-containing TWC and their market potential were presented. 叙述了三元(效)催化剂的类型和组成,稀土在三元催化剂中的作用及其应用前景和市场潜力。
- The type and the component of three way catalysts (TWC), the role of rare earth elements in TWC, the application prospect of rare earth containing TWC and their market potential were presented. 叙述了三元(效)催化剂的类型和组成,稀土在三元催化剂中的作用及其应用前景和市场潜力。
- The drawbacks of existing supports for three way catalysts(TWC)in structure and performance were discussed,and the function and synthesis of ceria-zirconia solid solution for TWC were reviewed. 讨论了现有汽车尾气净化催化剂载体存在的结构和性能缺陷,阐述了铈锆固溶体在尾气净化中的作用,以及铈锆固溶体的主要合成方法,并对比了各种方法的优缺点。
- Keywords ceria;zirconia;oxygen storage capacity;thermal stabilization;three way catalyst; 氧化铈;氧化锆;储氧能力;热稳定性;三效催化剂;
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- The Working Principle of Three- way Catalyst Case and Its Inspection Methods 三元催化反应器的作用原理及其检测
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
- Her family lives three li away from her school. 她家住在离学校有三里路的地方。
- We spied three figures in the distance. 我们望见远处有三个人影儿。
- The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
- It's three blocks straight ahead. 一直往前走过三个街区就是。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
- Three people can sit in the back of this car. 这车的后座可坐3个人。
- I did the calculation by the rule of three. 我是根据比例运算法则计算出来的。
- He is on night duty three days a week. 他一个星期要上三天夜班。