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mixed oxide catalysts
相关语句
  复合氧化物催化剂
    Studies on Mixed Oxide Catalysts for Automobile Exhaust Control
    复合氧化物催化剂用于汽车尾气净化的研究
短句来源
    STUDY ON MECHANISMS OF SO 2 POISONING AND THE ANTI POISONING OF MIXED OXIDE CATALYSTS IN AUTO EMISSION CONTROL ——STUDIED BY TPD
    复合氧化物催化剂在汽车尾气净化中硫中毒及抗硫中毒机理——TPD研究
短句来源
    Mechanism of the Sulfur Poisoning and Antipoisoning of Sulfur of Mixed Oxide Catalysts for Automobile Emission Control by Using XPS
    利用XPS研究复合氧化物催化剂在汽车尾气净化中硫中毒及抗硫中毒机理
短句来源
    Non-noble metal containing mixed oxide catalysts used for automobile exhaust control were investigated.
    研制了一系列非贵金属复合氧化物催化剂,测定这些催化剂净化汽车尾气的活性和抗硫、磷、铅及析碳中毒等性能,排出了它们的活性和抗硫中毒的顺序。
短句来源
    By using XPS,before and after the intoxication of mixed oxide catalysts,the various appearance and the composition. valence and chemical mechanism of the active component of catalysts were studied.
    运用XPS分析方法研究一系列复合氧化物催化剂中毒前后硫在其表面的各种形态及催化剂活性组分中毒前后的组成、价态、化学机理及其变化。
短句来源
  “mixed oxide catalysts”译为未确定词的双语例句
    RESISTANCE OF MIXED OXIDE CATALYSTS TO SO_2-POISONING
    复合氧化物汽车尾气净化催化剂抗SO_2中毒机理研究
短句来源
    PHYSICO CHEMICAL PROPERTIES AND CATALYTIC BEHAVIOR FOR NO REDUCTION BY CO OF Ni BASED MIXED OXIDE CATALYSTS WITH PEROVSKITE (ABO 3) AND PEROVSKITE LIKE (A 2BO 4) STRUCTURE
    Ni系ABO_3和A_2BO_4型复合氧化物的固态物化性质与NO+CO反应的催化性能
短句来源
    By means of characterization with XRD,TPR and TG, it was proved thatthe HTlc precursors were indispensable starting materials to render satisfactory stabilities to the mixed oxide catalysts, and that it is necessary for the calcination temperature to be tuned in order to achieve the optimal catalytic behavior desired.
    通过XRD,TPR和TG等方式的表征说明,类水滑石前驱体是复合氧化物稳定性的关键,且调整适宜的焙烧温度才能达到最佳的催化活性。
短句来源
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  mixed oxide catalysts
The selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was investigated by using vanadium-bismuth based mixed oxide catalysts.
      
Catalytic oxidation of propane to produce propene was investigated over molybdenum-based mixed oxide catalysts.
      
Kinetics and mechanism of the oxidative dehydrogenation of ethane over Li/Dy/Mg/O/(Cl) mixed oxide catalysts
      
Cu-Zn-Al and Cu-Ce-Zr mixed oxide catalysts were prepared by two different methods, co-precipitation and flame spray pyrolysis.
      
Comparison of Cu-Ce-Zr and Cu-Zn-Al mixed oxide catalysts for water-gas shift
      
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Resistance to SO2 poisoning of mixed oxide catalyst was studied using IR, XPS and TPD techniques. No significant changes was observed after 500 hours exposure to SO2 of 20ppm, and only surface adsorption and a low amount of SO_4~2- were found after exposing to 50ppm SO2 for 20 hours. The special behaviour of the catalyst could be assigned to the function of its additives.

复合氧化物催化剂(ASC)具有较高的活性和良好的抗SO_2中毒性能.用IR、XPS、TPD等技术研究了该催化剂抗SO_2中毒机理,结果表明,与易失活催化剂相比,ASC经500h反应(反应气含SO_2约20ppm),其活性组分价态无显著变化,仅表面发生SO_2的化学吸附,经与约500ppm的SO_2作用20h后,发现仅有少量SO_4~(2-)形成.这是由于在ASC催化剂中添加了特殊助剂,而使催化剂活性组分得到保护的缘故.

Non-noble metal containing mixed oxide catalysts used for automobile exhaust control were investigated. Results indicated that,among the miked oxide catalysts under study, ASC(mixed oxides of rare earth, Pb, Mn, Cu, Cr, and additives) has the heighest activity and a prolonged resistence to thermal shocks, carbon deposit, and poisoning of sulphur, lead and phosphorous compounds, and therefore possesses certain prospect of application under vehicle operation conditions.

研制了一系列非贵金属复合氧化物催化剂,测定这些催化剂净化汽车尾气的活性和抗硫、磷、铅及析碳中毒等性能,排出了它们的活性和抗硫中毒的顺序。实验表明,ASC(Re-Mn-Pb-Cu-Cr-A-O_x/Al_2O_3,A助剂)催化剂具有较高的活性及较好的抗硫磷、铅及析碳中毒性能,具有较好的应用前景。

By using XPS,before and after the intoxication of mixed oxide catalysts,the various appearance and the composition. valence and chemical mechanism of the active component of catalysts were studied. SO2 was first adsorbed on the active sites of catalysts. Then,chemical adsorption of SO2 in the active component of catalysts had occurred to form sulphite and sulphate. Thus the catalysts were deactivated.

运用XPS分析方法研究一系列复合氧化物催化剂中毒前后硫在其表面的各种形态及催化剂活性组分中毒前后的组成、价态、化学机理及其变化。结果表明,SO2在催化剂活性中心进行化学吸附,然后一部分SO2与活性组分生成相应的亚硫酸盐和硫酸盐,从而使催化剂失活。

 
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