查询词典 prepared

There are many methods of preparing benzaldehyde, but it has been little reported in civil that benzaldehyde is prepared through hydrogenation of benzoic acid.

它的制备方法较多，而用苯甲酸为原料，采用催化加氢还原法文献报道较少。

It is prepared from pentachluorobenzonitrile by using KF as fluoride to substitute chlorine in the presence of benzonitrile under high temperature. But owing to the low solubility of KF and rigor synthesis condition, and the parallel auxiliary reactions, the speed of reaction as well as the yield is very low.

五氟苯甲腈的合成开发以五氯苯甲腈为原料在较高的温度下用氟化钾做氟化剂，通过取代苯环上氯原子而得到的，由于氟化钾在溶剂中溶解度低，合成条件要求苛刻，反应速度较慢，同时存在有平行竞争副反应，因而反应收率较低，国内尚无厂家生产。

Benzonitrile was selectively hydrogenated into benzylamine under mild conditions over activated amorphous nickel aluminium alloy catalyst which was prepared by rapidly quenching method.

由铜鼓快速淬冷法制备的非晶态NiAl合金催化剂经活化后用于催化苯甲腈加氢制苄胺的反应，考察了溶剂种类、苯甲腈初始浓度、催化剂用量、反应温度及反应压力等因素的影响，并测定了该催化加氢反应的表观活化能。

The title compound benzophenone hydrazone was prepared by the reaction of 80% hydrazine hydrate with benzophenone in ethylene glycol.

以 8 0 %水合肼和二苯甲酮为原料，在乙二醇中回流 3h得二苯甲酮腙，收率为 95 1%。

In this thesis, a series of benzamides and thioureas derivatives have been designed and prepared. By reasonable photoreaction conditions, a series of benzophenone and quinazoline compounds have been synthesized and structurally determined by NMR, MS and X-ray crystallography, respectively.

本文设计并合成了一系列苯甲酰胺和硫脲衍生物，通过选择合理的光反应条件，合成了一系列二苯甲酮和喹唑啉类化合物，应用核磁、质谱以及X-射线衍射技术对这些化合物的结构进行表征。

This is a wonderful acne creams as it contains both natural agents and chemically prepared benzoyl peroxide.

这是因为它含有一种美妙的痤疮药膏自然代理商、化学氧化苯甲酰准备。

We firstly report that the terminated group of the C-PPV prepared through the Gilch route is benzyl halide.

C-PPV溶液的浓度对形成的聚集体的形貌和光谱性能没有影响。

Chromium hydroxide is bright green pigment prepared by the calcination of a bichromate with boric acid at 500'C.

登录后回答可以获得经验值奖励，并可以查看和管理所有的回答。登录

Some of the leading Shias, who by most calculations represent more than 50% of the total population, seem prepared to reach out to the Sunnis, especially the biddable tribal sheikhs, provided they accept their new position as second fiddlers.

一些主要的什叶派，大多数统计标表明他们代表了总人口的50%多，看来准备与逊尼派接触，尤其是顺从的部族族长们，如果他们愿意接受二把手的位置。

In order to improve the catalytic activity, A series of bident ligands containing nitrogen atom were prepared by design, such as bipyridine derivatives, phenantroline derivatives, Schiff base of bipyridine etc.

为了提高催化活性，设计合成一系列含氮双齿配体，如联吡啶衍生物、邻菲罗啉衍生物、含吡啶席夫碱等。

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。