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Solid acid catalysts have been found to be useful catalyst in a variety of organic reactions. They have many advantages, such as non-toxic, inodorous, non-volatile; non-corrosive, non-pollution, mild reaction conditions, high yields and reactivity, excellent stability and simple work-up procedure, and these are what liquid catalysts cant replace.

固体酸催化剂在有机合成反应中应用广泛,这类催化剂无毒无味,不挥发,不污染环境,不腐蚀设备,容易回收,可重复使用,所催化的反应条件温和,产率和选择性高,后处理简便,且具有独特的催化性能,这些是液体催化剂所不能代替的。

The tetraoxazoline ligands only afforded the-configuration whether monometallic and/or bimetallic palladium complexes were formed upon the complexing process. Using the chelation-induced axially chiral palladium complex as a catalyst, excellent catalytic activities and enantioselectivities in the Wacker- type cyclization of allylphenols with up to 99% ee were gained.

当它与钯离子配位后只得到了轴构型为S的单金属或双金属配合物,并将该配体应用于钯催化的邻烯丙基苯酚的Wacker-type环化反应中,获得了很好催化活性和高达99% ee。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2'-isopropyloxy- 1,1'-binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbonyl compounds.

富电子、大位阻MOP型烷基膦配体2-二叔丁基膦-2'-异丙氧基-1,1'-联萘(L1)在钯催化的1,3-二羰基化合物的α-芳基化反应中显示了较好的催化活性。

Bulky and electron-rich MOP-type phosphine ligand 2-ditertbutylphosphino-2 -isopropyloxy 1,1 -binaphthyl (L1) shows good catalytic activity in palladium-catalyzed α-arylation of 1,3-dicarbony compounds.

富电子、大位阻MOP型烷基膦配体2-二叔丁基膦-2'-异丙氧基-1,1'-联萘(L1)在钯催化的1,3-二羰基化合物的α-芳基化反应中显示了较好的催化活性。

The aim of this dissertation was to investigate the effects of SPE technique on electrochemically assisted photocatalytic system.

通过对SPE法电助光催化的影响因素的研究,找出合适的光催化最佳条件。

Based on the pseudo-separation model for micellar catalysis, the ternary complex kinetic model for metallomicellar catalysis is suggested.

在胶束催化的假相分离模型的基础上,提出了金属胶束催化的三元复合物动力学模型。

The reactions include, organometallic reactions (grignard reaction, organolithium -zinc, and -copper chemistry ), metal catalyzed reactions, mannich reaction, nitration, hydrogenation, azidation, amino-protection reactions, organoalluminum catalyzed beckmann rearrangement, schmidt rearrangement, epoxidation, epoxide ring opening reactions, swern oxidation etc.

这些反应包括:有机金属反应(格利亚反应,有机锂,有机锌和有机铜反应),金属催化反应堆(suzuki 反应, negish 反应), mannish 反应,硝化反应,氢化反应,叠氮反应,各种基团的保护和脱保护反应,有机铝催化的贝克曼重排反应,斯密特重排反应,环氧化反应,环氧烷开环反应, swern 氧化反应等。

This Palladacycle catalyzed Heck reaction was characterized by a wide variety of substrates, mildness of reaction conditions, freedom from protection of inert gases and high catalytic activity retainable after repeated uses.

二茂铁亚胺环钯化合物催化的Heck反应具有底物范围较广,反应条件温和,不需要惰性气体保护,催化活性高且催化剂可重复使用仍能保持活性的优点。

It showed that, compared with other catalysts, SO(superscript 2- subscript 4)/TiO2-ZrO2 was more active to bring about more than 95% conversion rate of stillingia oil under the transesterification conditions of 150℃, molar ratio of methanol to oil 12:1, catalyst amount 5% and reaction time 6h.

结果表明,催化剂SO(上标 2-下标 4)/TiO2-ZrO2表现出了较高的催化活性,SO(上标 2-下标 4)/TiO2-ZrO2催化的最佳酯交换反应条件为:反应温度150℃,醇油摩尔比12:1,催化剂用量5%,反应时间6h,此时乌桕籽油的醋化率超过95%,且催化剂重复和再生使用效果良好。

The specificity of hydrogen ion catalysts, for example, is very broad, whereas many enzymes perform only a single function, such as hydrolysis of a single bond or bond type.

例如,在37℃下,由过氧化氢酶催化的过氧化氢还原反应比由胶态铂催化的该反应快1千万倍。

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Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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