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The influences of composition and structure of catalysts and cracking conditions on catalytic activity are also discussed. Further key study areas in catalytic cracking of tars are presented.

分析了不同催化剂的优缺点及催化机理，讨论了催化剂的组成、结构以及催化裂解条件对催化效果的影响，展望了未来焦油催化裂解的研究重点。

The catalytic activity of the mono- and bi-nuclear complexes, and unsymetric complex 〓〓 MeNTB =tris ( N-methylbenzimidazol-2-ylmethyl amine and tetranuclear complex 〓L = N, N, N', N'-tetrakis (N-methylbenzimidazol-2-ylmethyl-1,4-diaminobutane for oxidation of hexane was examined. Thedi-iron complexes with one exchangeable monodentate ligand and unsym-metric(μ-carboxylato) diiron complex exhibit high catalytic ac-tivity, while mononuclear Fe complex are inactive.

这些单核、双核化合物、不对称化合物〓-三氨和四核化合物〓四-1，4-丁二胺催化氧化环己烷的催化活性被测试，结果表明含有可交换配体氧桥联双核Fe化合物和不对称双核Fe化合物表现很高的催化活性，而单核的Fe化合物是非催化活性的。

Catalytic techniques for deep desulfurization, denitrogenation and dearomatization in production of clean gasoline and diesel fuels were reviewed, especially those for producing low-sulfur and extra-low-sulfur gasoline and diesel oil, among which technologies arousing most attention are sulfur-reducing FCC catalyst and additives, selective hydrogenation catalysts and technology, adsorptive desul-f urization of gasoline and diesel oil, biologically catalytic desulf urization of diesel oil, and selective oxid...

为面对新世纪清洁燃料生产的新机遇和新挑战，各种生产清洁燃料的催化技术正在竞相开发之中，尤其是生产低硫、超低硫汽油与柴油技术。其中，催化裂化降硫催化剂和助剂、选择性加氢处理新催化剂及工艺、汽柴油吸附脱硫、柴油生物催化脱硫和选择性氧化脱硫等新技术尤其引人注目。我国应加快清洁燃料生产催化新技术的开发研究，为生产更清洁的汽油和柴油燃料提供技术储备。

Used the impregnation method respectively to prepare integral honeycomb ceramics catalyst taking Ce0.8Zr0.15La0.05O δ, Ce0.8Zr0.2O2 as the coating and Pd as the active constituent,Inspected the different temperature roasting two kind of overall catalyst toluene catalytic combustion performance, through powder diffracts,Raman spectroscopy, surface area, the temperature program returns (H2-TPR) and so on the characterization results associated with the catalytic activity results.

求助翻译一段话！能部分翻译也有金币！采用浸渍法分别制备了以Ce0.8Zr0.15La0.05Oδ、Ce0.8Zr0.2O2为涂层、Pd为活性组分的整体式蜂窝陶瓷催化剂，考察不同温度焙烧的两类整体催化剂甲苯催化燃烧性能，通过粉末衍射、拉曼光谱、比表面积、程序升温还原（H2-TPR）等表征结果与催化活性进行关联。

The conducting wall in micro-tube preheats the inlet mixture by axial heat transfer. The existence of conducting wall will help to reach full reaction in the micro-tube. As the inlet velocity increases, both the existence of the surface catalytic combustion and the gas phase combustion become the limiting factors on combustion. Wall material and equivalence ratio of hydrogen/air mixture have important influence on catalytic combustion of hydrogen.

计算结果表明：表面催化反应对空间气相反应有抑制作用；在微型管道内，通过导热壁轴向间的传热，预热入口混合气体，使氢气燃烧更加充分；随着入口速度的增大，燃烧过程同时存在着表面催化反应和空间气相反应两种控制因素；管壁材料和当量比对氢气的催化燃烧过程有重要的影响。

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。

In the Aldol condensation of acetone with 4-nitrobenzaldehyde, two different hybrid secondary amine-functionalized mesoporous materials displayed enhanced catalytic performance in comparison to primary amine-functionalized materials. The possible reason is that the presence of organic functional groups with larger steric hindrance led to the enhanced catalytic performance of basic amino groups.

在对硝基苯甲醛和丙酮的羟醛缩合反应中，相对于一级胺功能化的材料，二级胺功能化的SBA-15展示了极大改进的催化活性，这可能是由于具有更大空间位阻效应的有机功能团的引人导致了碱性胺中心催化活性增强。

And the catalytic activity for NO decomposition was also tested. At the same time, H2-TPR measurement was performed to explore the effect of substituting alkaline-earth metals for La on redox-capability, which resulted in the change of catalytic capability.

考察了该系列催化剂催化分解NO的活性，并利用H2-TPR技术研究了不同碱土元素取代时对复合氧化物催化剂的氧化还原能力的影响，从而影响了样品的催化性能。

Aim To study the synthesis of phase transfer catalyst-triethyl benzyl ammonium chloride and its catalytic activity in phase transfer catalytic reactions.

目的 研究相转移催化剂TEBAC（Triethyl Benzyl Ammonium Chloride，三乙基苄基氯化铵）的合成以及在相转移过程中的催化性能。

Their catalytic activities changed with acid value and reaction temperature. The detail components of the bio-diesel production were analyzed by GC-MS. The results showed that the ZrO2-SO4(superscript 2-) lost its catalytic activity in high acid value Jatropha curcas oil.

以麻疯树油为原料油，分别比较了原料油的酸值及反应温度对2种催化剂的影响，利用气相色谱－质谱联用分析仪分析了产物的组成。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。