查询词典 lewis acid

The results indicated that the amounts of both Brnsted and Lewis acid sites were decreased with the increase of modification temperature.

结果表明，随着氟硅酸铵处理温度的提高，HMCM-22分子筛的B酸和L酸中心的酸量均逐渐减少。

Their hydrolysis promoted by Lewis acid was also investigated under the same conditions.

在固相机械研磨条件下合成二氯吖丙啶化合物，并研究了它们的水解反应。

silicon-based Lewis acid ; development ; synthesis ; application

含硅路易斯酸；发展；合成；应用

The incorporation of titanium into the silica framework provoked mainly a proportional increase of Lewis acid sites.

钛的并网到硅土框架里挑衅了路易斯酸站点主要比例增量。

AlEt〓/THF served as both Lewis acid and reducing agent in this reaction.

而且，AlEt〓在该反应中既是路易斯酸，又是还原剂。

Both the amounts of Bronsted and Lewis acid on phosphate-modified MCM-49 were decreased.

在实验条件下， MCM-49分子筛的丙烯转化率为99.6%，异丙苯选择性为75.3%。

Recent progress in the applications of non-enzymatic system about Lewis acid and base tokinetic resolution reactions of racemes is reviewed.

本文讨论了路易斯酸及路易斯碱催化体系在外消旋体动力学拆分反应中应用的最新进展。

The catalytic systems of Lewis acid and base are useful ways in the non-enzymatic catalysis.

在非酶催化反应中，路易斯酸碱催化是比较常用的方法，它们被广泛地用于多种外消旋体的动力学拆分反应中，目前在该领域取得了很大的进展。

The cat-alytic systems of Lewis acid and base are useful ways in the non-enzymatic catalysis. They were widely used to different kinds of kinetic resolution reactions. At present, mighty advances have been made in the field.

在非酶催化反应中，路易斯酸碱催化是比较常用的方法，它们被广泛地用于多种外消旋体的动力学拆分反应中，目前在该领域取得了很大的进展。

The catalytic systems of Lewis acid and base are useful ways in the non-enzymatic catalysis. They were widely used to different kinds of kinetic resolution reactions.

在非酶催化反应中，路易斯酸碱催化是比较常用的方法，它们被广泛地用于多种外消旋体的动力学拆分反应中，目前在该领域取得了很大的进展。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。