氢化

Moreover, copper ions were isolated as hydroxides, which is beneficial to the separation of copper from nitrated products.

而且，硝化过程中铜以氢氧化物固体沉淀的形式析出，便于与硝基化产物分离。

6The WP/γ-Al2O3 catalyst containing 5% Ni promotor showed a higher diesel oil HDS activity than that of the corresponding sulfurized catalyst and phosphide industrial catalyst and sulfurized industrial catalyst.

含助剂Ni5%WP/γ-Al2O3催化剂柴油加氢脱硫活性最好，远高于相应无助剂硫化态催化剂以及磷化和硫化的工业催化剂。

The synthesis of alkylcyclohexylbenzoic acid: take the synthesis of ethylcyclohexylbenzoic acid as a typical example. With the AlCl3 as the catalyst, cis+trans acetylcyclohexylbenzene is synthesized from the reaction of acetyl chloride, cyclohexene and benzene.

烷基环己基苯甲酸的合成研究：主要研究了乙基环己基苯甲酸的合成，以乙酰氯、环己烯、苯为原料，三氯化铝为催化剂，合成乙酰基环己基苯，用水合肼、氢氧化钾、一缩二乙二醇经过高温加热还原羰基(Wolff-黄鸣龙还原)，将所得到的乙基环己基苯用乙酰氯进行傅克酰基化得到乙基环己基苯乙酮，所得中间体经过处理之后直接得到反式产物，将反式异构体的乙酰基氧化得到反式烷基环己基苯甲酸。

In this article,a non-carcinogenic dye intermediate 4-aminodianiline-2-sulfonic acid is synthesized from 4-nitro-1-chlorobenzen through sulfonation,condensation and reduction.

针对联苯胺作为合成染料的重要中间体已被确认为致癌物的情况，以对硝基氯苯为原料，经磺化、缩合、还原，合成了一种无致癌性并取代联苯胺的双胺化合物染料中间体4-氨基二苯胺-2-磺酸，利用红外光谱、差热和氢谱核磁对其性质进行了表征。

This reaction, called the Hofman elimination, is quite analogous to the dehydrohalogenation of an alkyl halide

这个反应称为Hofman消除反应，它很像卤代烷的脱卤化氢反应。

This reaction, called the Hofman elimination, is quite a nalogous to the dehydrohalogenation of an alkyl halide

这个反应称为Hofman消除反应，它很像卤代烷的脱卤化氢反应。

Objective To investigate the clinical significance of fasting blood glucose, serum glycated albumin combined with lactate dehydrogenase in patients with acute traumatic brain injury.

目的 探讨颅脑外伤患者急性期空腹血糖、血清糖化白蛋白和乳酸脱氢酶联合测定的临床意义。

The celery seed oil was extracted with Soxhlet extraction method.

采用索氏提取法提取了天津实心芹菜籽油及美国西芹籽油，提取的油用氢氧化钾-甲醇法酯化后，对其进行了GC/MS分析。

Papers in the experimental part of our literature considered on the basis of the experimental exploration, and podophyllotoxin intermediates with the structural characteristics of a simple pepper aldehyde as the starting material,α,β-unsaturated carbonyl compounds are selective reduction lithium aluminum hydrogen reduction reaction as the key steps to have the Knoevenagel condensation, peracetic acid epoxy between chlorine and alkaline hydrogen peroxide epoxy, DCC condensation esterification reaction of the three podophyllotoxin intermediates.

论文实验部分我们在综合考虑文献的基础上，经过实验摸索，并结合鬼臼毒素中间体的结构特点以简单的胡椒醛为起始原料，对α，β-不饱和羰基化合物具有选择性还原的锂铝氢还原反应为关键步骤，先后经过Knoevenagel缩合，间氯过氧苯甲酸环氧化，碱性过氧化氢环氧化，DCC缩合酯化等反应合成了3个鬼臼毒素中间体。

Keywords sodium hypophosphite;venturi-duct;wet dust collector;cyclone separator;PH3 tail gas

次磷酸钠；文氏管；湿式除尘器；旋风分离器；磷化氢尾气

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。