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首页> 外文期刊>Revue roumaine de chimie >CATALYTIC SYSTEMS ON METAL BLOCK CARRIERS FOR NEUTRALIZATION OF EXHAUST GASES OF MOTOR TRANSPORT
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CATALYTIC SYSTEMS ON METAL BLOCK CARRIERS FOR NEUTRALIZATION OF EXHAUST GASES OF MOTOR TRANSPORT

机译:金属块载体上的催化系统,用于汽化排气气态的中和

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摘要

Catalysts on the basis of various metals on metal substrates with the honey comb structure of channels for neutralization of toxic gases of motor transport are prepared. Reaction NO+C_3H_6+O_2 at a wide variation of conditions of process is studied. Influence of the nature of the zeolites introduced into composition of the washcoat and the promoting additives of transition metals on activity and properties of block catalysts is researched. The activity of Pd-Mo catalyst is increased at modifying of a washcoat by cations Ce~(4+), Zr~(4+). Introduction to the washcoat of titanium dioxide considerably increases the degree of reduction of nitrogen oxides with propylene. The Fe-containing catalyst modified by NaY zeolite possesses high activity. Degree of conversion of NO_x in the studied conditions on synthesized one- and two-component systems reached 80.5-100%, hydrocarbons - from 70.0 to 100%.
机译:制备了基于金属基质上的各种金属的催化剂,该催化剂具有通道的蜜梳结构,用于中和汽车运输中的有毒气体。研究了在不同工艺条件下的反应NO + C_3H_6 + O_2。研究了引入修补基面涂料组合物中的沸石的性质和过渡金属的促进添加剂对嵌段催化剂活性和性能的影响。通过阳离子Ce〜(4 +),Zr〜(4+)修饰修补基面涂层,可以提高Pd-Mo催化剂的活性。向二氧化钛基面涂层的引入大大增加了丙烯对氮氧化物的还原程度。 NaY沸石改性的含铁催化剂具有很高的活性。在研究的条件下,在合成的一组分和二组分体系中,NO_x的转化度达到80.5-100%,碳氢化合物-从70.0至100%。

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