催化的

The synthesis of the unbridged metallocene (2, 4-Me〓Ind)〓ZrCl〓, which is not found in reference. Polymerization of ethylene or propylene with the metallocene has high activity. The resulted ethylene/1-hexene copolymer characteristic of uniform comonomer distribution. The catalyst possess commercial value

合成了未见文献报道的非桥联茂金属（2，4-Me〓Ind）〓ZrCl〓，用这种茂金属催化乙烯或丙烯聚合均达到了很高的催化效率，所得的乙烯/1-己烯共聚物表现出共单体分布高度无序的特点，具有工业应用前景

The optimum reaction condition for preparation of CoPcY is as follows: a , using CoCl2 as the exchanged salt ; b , complexation temperature of 180 ; c . complexation catalyst of NH4C1 and A1C13 .2, The unsymmetrically substituted cobalt phthalocyanine complexes were synthesized by statistical condensation of phthalic anhydride and tetrabromophthalic anhydride, and further immobilized in MCM-41 molecular sieves by zeolite synthesis method, as well as characterized by XRD,FT-IR,DRS, 1HNMRetc. The catalytic property of CoPcBrx/MCM-41was tested by cyclohexane oxidation using H2O2 or t-BOOH as oxidant.

2采用本路线制备CoPcY的最佳条件为：a、采用氯化钴作为待交换的金属盐；b、络合温度以180℃为宜；c、起始反应物为苯酐、尿素、氯化铵、氯化铝、CoY时，制备出的CoPcY的催化性能最好； 2、首次采用苯酐和四溴苯酐均相浓缩统计合成法制得了不对称取代的金属钴酞菁络合物，并采用~1HNMR、FTIR、DRS等对其进行了结构表征；此外，采用沸石合成法将其固定于MCM-41中孔分子筛，并对其催化性能进行了考察。

The main results are as follows:(1)In order to find out the catalysis character of pectinase and xylanse in bacillus circularise A_6 and exhibit their maxium catalysis rate,the optimum condition for determination of pectinase and xylanase activity in bacillus circularise A_6 was studied in aspect of pH,temperature,substance concentration,reaction time,anion concentration.

试验结果如下：(1)为探明环状芽孢杆菌果胶酶及木聚糖酶的催化特性，更好发挥它们的催化性能，本文从pH值、温度、底物浓度、反应时间、离子强度几个方面研究了环状芽孢杆菌A_6产生的果胶酶与小聚糖酶活性测定的最适方法。

In this paper,a series of CO_2 adducts of N-heterocyclic carbenes are designed and synthesized.Then,they are employed in the coupling reactions of carbon dioxide with epoxides as the catalysts.And the effects of molecular structure on the catalytic activity are observed.

论文设计合成了一系列的NHC-CO_2加合物，并将其作为催化剂首次应用于催化二氧化碳与环氧化物的环加成反应，考察了这类催化剂的分子结构对催化性能的影响。

During process of catalyzing,O_2 adsorbed on carbon materials surface first.

催化过程中，氧首先吸附在反应三相界面的碳载体上，研究氧的吸附过程对了解催化剂的催化机理具有十分重要的意义。

The enthalpies of some compounds were measured. And decomposition temperatures of some compounds were determined by thermogravimetric analyzer.

在合成实验中，研究了反应物分子结构，反应物配比对钯催化偶联反应速率及反应产率的影响，首次发现钯催化偶联反应中的取代反应，对观察到的实验现象给出了理论上的分析和解释。

The activity of catalysis of IER was affected by the chemical reactive process, it's inner and outer diffusion processes, serving time and esterified degree.

离子交换树脂的催化活性既受化学反应过程的控制，又受内扩散和外扩散的影响，其催化活性也受反应温度、使用时间的、酯化度等因素的影响。

Firstly, the effect of solvent on the process of PO impregnation on TS-1 by the method of products impregnating was studied.

在TS-1催化丙烯环氧化反应中，溶剂或混合溶剂的各组分含量及性质对TS-1的催化活性、PO选择性以及反应后催化剂上的沉积物种类和含量的影响很大，有机溶剂的极性经验参数E_T(30)越大，催化剂活性越高。

According to the result, the positions of the catalytic converter and the secondary air injection have been properly redistributed to achieve a good performance of cleaning and reduce the emission of exhaust gas.

根据得到的流场分布合理布置催化转化器和二次空气喷射的位置，从而获得比较好的催化净化效果以降低有害物的排放。

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。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。