查询词典 catalysts

The effects of reactions, different paraffins as reactants, and different zeolites as catalysts, on the cracking-desulfurization of thiophene contained paraffins were investigated.

考察了反应条件、不同烷烃和不同分子筛对含噻吩烷烃裂化脱硫反应的影响。

There is an activation process for passivated alumina supported molybdenum nitride and carbides catalysts at the initial stage of hydrazine decomposition.

在肼分解反应初期，钝化态的氮化钼和碳化钼催化剂有一个活化的过程，随着启动次数的增加，催化剂的初活性逐渐提高，最后达到稳定。

Ce0.35Zr0.55Y0.07La0.03O1.95(OSM=oxygen storage material), La-Al2O3 were prepared by coprecipitation and peptizing method, respectively. Monolith catalysts of Fe2O3 supported on prepared material were obtained by impregnation method and the catalytic activity for methane combustion under low concentration was investigated.

采用共沉淀法制备了高性能低铈储氧材料Ce0.35Zr0.55Y0.07La0.03O1.95和胶溶法制备了耐高温、高比表面的La-Al2O3并以它们为载体，制备了一系列整体式铁基催化剂。

In case of morphological change, the deactivated catalysts can be partly renewed by impregnating with 12%〓SO〓 solution, in which most of the components can the redissolved and redried and reactivated.

根据对V-K-S-P／SiO〓催化剂综合研究分析，认为影响苯酐收率的主要因素有，活性体在反应状态下所处的相态，催化剂表面V〓、V〓的分布及其与助剂间的配位环境，催化剂表面几何形貌与结构。

By making fun of anyone and satirizing social customs and more, jesters were often catalysts for social change.

被戏弄和讽刺任何社会风俗，往往jesters催化剂的社会变革。

Moreover, the activity of catalysts supported by molecular sieves is investigated.

第三，考察了以分子筛为载体的催化剂对酯交换反应的活性，分为两个部分

By investigating the performances and chemical stabilities of three anode catalysts, namely, Pt, MoS2 and composite metal sulfide (MoS2/NiS) in the condition of electrochemical oxidation of hydrogen sulfide, it is indicated that MoS2 and MoS2+NiS exhibit better catalytic activity than Pt, and that, at a temperature more than 450℃, MoS2 itself sublimes, while the composite catalyst MoS2/NiS containing both Mo and transition metal Ni remains stable.

考察了3种阳极催化剂Pt、MoS2及复合金属硫化物(MoS2/NiS)电化学氧化硫化氢的性能和在硫化氢环境下的化学稳定性，发现MoS2和复合MoS2/NiS催化剂比Pt具有更好的催化活性，但MoS2在温度超过450℃时会升华，而含有Mo和过渡金属Ni的复合MoS2/NiS催化剂在操作条件下很稳定。

The sulfated catalysts had worse oxidation degree of NH_3, so the activity was lower.

高的NH_3吸附量保证了催化剂在高温区拥有较高脱硝效率。

Therefore, it may be worthwhile to prepare novel catalysts that simultaneously possess the advantages of both molecular sieves and sulfated zirconia.

因此，如果能制备一种新型的催化材料，使它既具有分子筛的规整孔道结构、高比表面积，又具有SO〓／ZrO〓的超强酸性，无疑将会是一件很有意义的工作。

The orthogonal experimental design was applied to investigate the effects of zirconia source Zr(NO34·5H2O, ZrOCl2·8H2O,precipitants and sulfating agent (sulfuric acid, ammonium sulfate) on the catalytic performance of the catalysts unde the most superior condition .The catalytic activity was tested in esterification of acetic acid with butanol .

在最优的条件下用正交设计法考察锆源（Zr(NO3)4·5H2O，ZrOCl2·8H2O）、沉淀剂和硫酸化试剂对催化剂性能的影响，并通过乙酸和正丁醇的酯化反应的酯化率检测所制备的SO4/ZrO2催化剂的催化效果。

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。