催化的

The hydrosilylation was also improved a lot by the catalyst composed of chloroplatinic acid and triethylamine.

在合成γ-氯丙基甲基二氯硅烷的工艺中，选用助催化效果最好的三乙胺作助催化剂与氯铂酸络合形成催化体系，并通过正交试验法优选出该反应的最佳工艺条件，其反应时间大大缩短，产率高达85%，远远高于以往文献报道的产率。

The result was compared with oxidations of cyclohexene without irradiation and at irradiation without catalyst.

另外，本文还研究了各种类型的催化剂在中压汞灯下光催化环己烯的氧化反应，结果表明，无论上述的哪种催化剂，在中压汞灯下光催化环己烯氧化反应，都得不到环氧环己烷，生成的产物主要为水和二氧化碳。

The conversion of cyclopentadiene and selectivity for methylcyclopentadiene were around 32 % and 86 %, respectively, over KNO3/γ-Al2O3 and KNO3/HT at 450℃.

在所考察的催化剂中，KNO3/γ-Al2O3和KNO3/HT的催化性能最好，在450℃时就能催化转化约32％的CPD，MCPD的选择性可达86％左右，高于传统固体碱MgO在500℃时的活性。

The conversion of cyclopentadiene and selectivity for methylcyclopentadiene were around 32% and 86%, respectively, over KNO3/γ-Al2O3 and KNO3/HT at 450℃. Such catalytic activity was higher than that on MgO.

在所考察的催化剂中，KNO3/γ-Al2O3和KNO3/HT的催化性能最好，在450℃时就能催化转化约32%的CPD，MCPD的选择性可达86%左右，高于传统固体碱MgO在500℃时的活性。

The results indicated, catalytic activity was very high, the average rate of O 2 uptake was 4.25×10 -2 mmol/min after 10 min, the yield of cyclopentanone was up to 83%.

实验结果表明，该催化体系对环戊烯的羰基化显示出较高的催化活性，反应 1 0 min，反应的平均吸氧速率为 4.2 5× 1 0 -2 mmol/min，环戊酮的收率可达 83%。

The research status and development trend of biomimetic delignification catalyzed by metal complexes were reviewed.

综述了目前金属配合物仿酶催化脱木质素的研究现状及发展趋势，着重评价了卟啉类和非卟啉类金属配合物作为木质素氧化降解的仿酶催化剂的效果，对金属配合物仿酶催化脱木质素技术的应用前景进行了展望。

PLA with excessive Lonformation units in polymer chains ran he obtained using SnCl2 and naphthalene disulphonic acid as catalyst system.

SnCl2和NDA分别催化D， L-乳酸聚合可制备消旋的非晶态聚乳酸，而SnCl2/NDA催化体系所得的聚乳酸是高光学活性的L-构型的结晶聚合物。

Part II:The electrocatalytic oxidation of guanine, adenine, guanosine-5'-monophosphate and ssDNA was performed in the presence of iron bis(2,2':6',2"-terpyridine) and Fe tris(1,10-phenanthroline) complexes as a homogeneous catalysts with Fe redox couple. The electrocatalytic and electroanalytic properties of guanine with an iron bis(2,2':6',2"-terpyridine) complex was measured by the amperometry method using the rotating disk electrodes. Electropolymerization of iron tris(5-amino-1,10-phenanthroline) complex produced thin polymer films on a gold, platinum, nickel, and glassy carbon electrode.

第二部分利用iron bis(2，2'：6'，2&-terpyridine)和Fetris(1，10-phenanthroline)之金属错合物当作均相的催化剂对於鸟嘌呤、腺嘌呤、5'-鸟嘌呤核苷单磷酸盐(guanosine-5'-monophosphate)和单股DNA进行电催化氧化的研究。iron bis(2，2'：6'，2&-terpyridine)之金属错合物对於鸟嘌呤的电催化和电分析性质可利用计时安培法并使用旋转环-碟电极进行测量。rontris(5-amino-1，10-phenanthroline)之金属错合物可经由电聚合过程所形成的聚合薄膜固定在黄金、白金、镍和玻璃碳电极上。

Pt nano particles decorated with nafion ionomers were synthesized and used as electrocatalyst in proton exchange membrane fuel celldue to plentiful proton channels provided by the enwrapping polymers.Then decorated Pt particles were deposited on carbon nanotubes,which enwind each other into interconnect nets and form the framework of the catalyst layer for PEM fuel cell.

介绍了Nafion聚合物作为修饰离子，合成具有原位质子导电能力的纳米Pt颗粒；TEM分析显示Pt颗粒的平均粒径为4nm，颗粒之间界限明显，分散状态良好；将这种离子导体修饰的纳米Pt沉积到纳米碳管表面作为质子交换膜燃料电池催化电极，纳米碳管相互缠绕在催化层形成交联的电子通道。

Their catalytic activities in the condensation reaction of cyclohexanone with ethanediol were studied.The results showed that the catalytic activity of SO_4~(2-)/ZrO_2-Ce_2O_3 in the condensation reaction ...

实验表明：(1)SO42-/ZrO2-Ce2O3在缩合反应中的催化活性比SO42-/ZrO2和SO42-/ZrO2要强；(2)引入适当数量的Ce2O3使得固体超强酸的酸强度增大；(3)当固体超强酸SO42-/ZrO2-Ce2O3的制备条件为焙烧温度550℃、焙烧时间4h、Ce2O3质量与ZrO2质量比2%时，酸对缩合反应的催化活性最高。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。