硝化

Aromatic hydrocarbons could be selectively nitrated with nitrogen dioxide in the presence of MIPs. MIPs were characterized by means of modern analyses. And such successes stem from combination of factors involved in this type of heterogeneous catalysis.

采用现代分析方法对MIPs进行表征，并将MIPs在催化芳烃硝化反应中表现的催化活性和区域选择性与其结构相联系。

Organic compounds used as solvents include aromatic compounds and other hydrocarbons, alcohols, esters, ethers, ketones, amines, and nitrated and halogenated hydrocarbons.

有机化合物作为溶剂的有芳香族化合物及其它烃类、醇、酯、醚、酮、胺，还有硝化与氯化的烃类。

The results show that the two free secondary amines of TAIW are nitrated firstly and then the four acetyl groups of TAIW are nitrolysed one after one under conditions of elevating the reaction temperature.

试验结果表明：TAIW笼底的两个游离仲胺基很容易首先发生硝化作用，在升温条件下，四个乙酰基再逐个发生硝解。

Not suitable for case hardening or nitrating.

不适合的情况硬化或硝化。

More expensive nitrating agents may be used.

还可应用较贵的硝化剂。

Experiments studied the effects of reacting conditions, solvents, catalysts etc on the reaction, and the best nitrating condition was established.

实验分析了反应条件、溶剂及催化剂等因素对反应的影响，找出了最佳硝化条件。

By the use of new nitrating agent, the reaction eliminated the use of concentrated sulfuric acid and was environmental friendly with high atom economy.

该方法通过改变硝化剂，不仅成功地避免了浓硫酸的使用，而且提高了原子经济性，具有良好的环境效益。

A heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a ''.

一种重的、黄色有毒油状爆炸性液体，由甘油硝化制成，用于制炸药，医学上用作血管舒张药。

The result of above three aspects indicates:(1) under these optimize conditions,the yield of nitrating reaction is 95.52%, the yield of phase transfer catalysis fluorination is 90.03%, the yield of chlorination is 87.5%,and the reaction total yield is 75.47%, which are higher than the yields reported, the purity of product is 98.5%.

上述研究结果表明：(1)在实验所得的工艺条件下，硝化收率为95.52%，相转移催化收率为90.3%，氯化收率为87.5%，反应总收率达到75.47%，产品纯度为98.5%，均高于文献所报导收率。

Nitroglycerin is obtained by nitrating glycerol.

硝化甘油是经过硝化丙三醇得来的。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。