催化作用

The calixarenes used as PTC in the fluorination of tetrachlorophthahaloyl chloride to obtain dimethyl tetrafluoroterephthalate were studied in this paper.

研究了杯芳烃在四氯对苯二甲酰氯氟化制备四氟对苯二甲酸二甲酯反应中的相转移催化作用，发现以杯芳烃作相转移催化剂使产品收率得到了明显提高。

Their tribological performances were evaluated with a HQ-1 block-on-ring test rig and a four-ball machine.

一价铜盐和铁盐的性能较差与一价铜盐的歧化反应及它们对润滑油氧化的催化作用有关。

It was demonstrated that polyCuTAPc had a good catalytic activity on the reduction of oxygen.

实验发现聚四氨基铜酞菁对溶解氧的还原具有较好的催化作用。

This indicated that Grignard reagent is a catalyst here.

格氏试剂在这里是作为一个强碱起着催化作用。

Regulation of glycolysis The main control step is that catalyzed by PFK but hexokinase and pyruvate kinase are additional control sites.

糖酵解的调节主要控制步骤是 PFK 酶的催化作用，而己糖激酶和丙酮酸激酶则是另外的控制位点。

LaNi〓 can be easily activated at room temperature and activated LaNi〓 possesses catalysing effect for the dissociation of H〓, which greatly reduces the energy barrier for dissociation of H〓. Hydrogen passed through LaNi〓 particles, then diffused into the crystal lattices of V、Nb and TiFe alloy and formed hydrogenate.

LaNi〓粒子在室温下很容易活化，活化后的LaNi〓具有了氢分子分解为氢原子的催化作用，降低了氢分子分解为氢原子所必须克服的势垒，氢通过LaNi〓粒子而进入V、Nb、TiFe合金晶格中，形成金属氢化物。

CATALYTIC ACTION OF METAL IONS ESPECIALLY CERIUM ION, IN THE DECOMPOSITION OF t-BUTYL HYDROPEROXIDE

金属离子，特别是铈离子在叔-丁基过氧化氢分解中的催化作用

The density of vacant sites on the surface of support has the effect on the dispersion state, surface acidity and catalytic activity of supported niobia catalysts for condensation reaction of isobutylene and isobutyraldehyde.

本工作较深入地描述了负载型铌氧化物催化剂表面相互作用，为深刻认识负载型铌氧化物催化剂酸催化作用和进行高效固体酸催化剂的设计和制备提供了参考依据。

In order to thoroughly study the effect of mineral catalysis on the hydrocarbon generation of organic matter, the comparative experiments of whole rock and kerogen for 4 samples were completed under different temperature, respectively, by means of thermal simulating experiment in the open system.

为了深入研究矿物催化作用对有机质产气的影响，采用开放体系下的热模拟实验，在不同温度下对4个样品分别进行了全岩和干酪根生气对比研究。

It was shown that high optical purity lactide and crystallization in polymerization led to higher molecular weight PLA using low-toxic zinc lactate as catalyst.

结果表明，合适的裂解温度有利于合成高光学纯度的丙交酯；在低毒乳酸锌的催化作用下，高光学纯度的单体以及聚合过程中的结晶都有利于制备高分子量聚乳酸。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。