查询词典 catalysts

As an important member of nanophase materials,nanophase oxide materials play an important part in refined ceramics,electric eye,magnetic materials,sensors,catalysts and luminous materials.

纳米氧化物材料作为纳米材料中的重要一员，在精密陶瓷、光电池、磁性材料和传感器、催化剂、发光材料等方面有着重要作用。

The catalysts were characterized by transmission electron microscope and powder X-ray diffraction.

采用TEM和XRD技术对合金催化剂的物理性质进行了测试。

Along with the strict emission standards, more and more requests for the performance of the catalysts are put forward.

随着排放标准的不断提高，对催化剂的性能提出越来越严格的要求。

The aim of this paper is to develop a new catalytic distillation process and its catalysts for the endothermic reaction of isopropanol dehydrogenation.

本文的目的是开发一种新的吸热反应的催化蒸馏过程，即异丙醇脱氢的催化蒸馏过程及其所用的催化剂。

Catalysts reduce the activation energy barrier between reactants and products.

催化剂会减少反应物和产物之间的活化能障碍。

Catalysts reduce the activation energy barrier between reactant s and products.

催化剂会减少反应物和产物之间的活化能障碍。

The results show that the yield of butyl acetate using the catalysts prepared with the concentration of H2SO4 by 0.5 mol·l-1 and the calcination temperature of 550℃ is the best,which is up to 52.5% when the molar ratio of butyl alcohol to acetic acid is 1:1.3 and without addition of entrainer in the hermetic reactor.

结果表明采用硫酸浸渍液浓度为0.5mol/L，焙烧温度为550℃时所制备的催化剂在正丁醇和乙酸的物质的量比为1.3及不添加任何带水剂的密闭条件下酯化效果最好，酯化率为52.5%。

Their properties and active life as catalysts for esterification are also discussed.

探讨了这类固体超强酸的制备条件、表面结构及其用作酯化催化剂的性能和寿命等问题。

The results revealed that ethane and oxygen can react on catalysts with good reactivity and selectivity.

评价结果表明，临氧条件下，在四种铁基复合氧化物催化剂上的反应性能差别较大，这种反应性能上的不同是与催化剂本身结构和晶格氧的活泼性密切相关的。

Finally, the developing trend of etherification catalysts is emphasized.

最后指出了醚化催化剂的发展趋势。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。