重氮化反应

水蒸气存在条件下，MnO2/NaY催化剂上NH3选择催化还原NOx的反应机理类似于重氮化反应机理。

SCR mechanism of NO_x with NH_3 in presence of steam on MnO_2 / NaY catalyst was similar to diazotization .

以对氯苯乙酮、磺胺为原料，经mannich反应、重氮化反应、还原反应和缩合反应制得荧光增白剂DCB。

Fluorescent Whitening Agent DCB is made from P - chloroacetophenone and sulfonamide by Mannich reaction 、 diazotization 、 reduction and condensation reactions .

其中对重氮化反应的温度，及由重氮盐还原成对一磺酰胺基苯肼时还原介质的PH值和亚硫酸钠用量等对反应及产率的影响。

The effect of the factors , such as the temperature of diazotizing reaction , the PH value of the reaction medium during the reduction of diazonium salt to p-sulfonamido phenylhydrazines and the amount of sodium suifite , on the reaction and production is discussed .

然后再以合适的芳胺经重氮化反应偶合到PVK的活性亚甲基上，合成出类汉沙黄颜料。

Appropriate aromatic amines were diazotized and coupled with the active methylene of the PVK to give a group of yellow pigments , which have the similar properties with Hansan Yellow dye .

无冷却螺旋管式苯胺重氮化反应工艺试验研究

Experimental study on aniline diazotization without cooling in a spiral reactor

详细的分析了冰醋酸在重氮化反应中的溶剂效应。

The solvent effect of anhydrous acetic acid was described in detail .

浅谈糖精钠生产中重氮化反应的应用

Shallowly Discusses in the Soluble Saccharin Production the Diazotization Application

讨论了硝化和重氮化反应机理。

The mechanisms of nitration and diazotization were discussed .

细微结晶在重氮化反应中的应用

Application of Tiny Crystal to the diazotization Reaction

讨论芳香伯胺重氮化反应的六种特殊反应条件。

In this paper , six kinds of special reaction conditions of diazotization of aromatic amines are discussed .

方法：重氮化反应法测定血浆标本亚硝酸盐含量表示NO浓度。

[ WT5HZ ] Methods : [ WT5BZ ] NO concentration in plasma was expressed with the subnitrate level that was measured by diazotization method .

工艺过程包括重氮化反应、重氮耦合反应和还原反应，总收率60%，产品含量≥99.0%。

The process of technology included diazotization , diazo coupling reaction and reduction . The total yield was 60 % , the purity of mesalazine ≥ 99.0 % .

方法由2-萘胺经重氮化反应、还原反应制得2-萘肼，再与甲基异丙基酮经费歇尔吲哚合成反应制得目标化合物。

Methods 2-naphthylhydrazine was prepared from 2-naphthylamine via diazotization and reduction reactions , followed by a Fischer indole synthesis with isopropyl methyl ketone to give 1,1,2-trimethyl-1H-benz [ e ] indole .

方法：确诊的肝性脑病30例，禁食蛋白质，空腹抽血，经重氮化反应法测量血清中的NO水平，与30例确诊的慢性肝炎血清中的NO水平比较；

Methods : Nitric oxide were detected by enzyme reduction assay from the sera of 30 cases of the patients with hepatic encephalopathy and compared with that of chronic virus hepatitis .

本文对管式反应器中进行的苯胺重氮化反应进行了数百次试验，研究了各因素对苯胺重氮化反应转化率的影响，并着重分析了进料温度因素的影响。

Hundreds of experiments were carried out on aniline diazotization in tubular reactor to study the influence of all factors on conversion , and the influence of feeding temperature was analyzed specially .

介绍了合成含氟芳香族化合物常用的氟取代反应、重氮化反应、卤交换反应，认为卤素交换尤其是脱硝氟代是选择性合成含氟芳香族化合物的有效途径。

The common methods used for synthesizing fluorinated aromatic compounds , including direct fluorination and diazotisation as well as halogen exchange reactions were briefly introduced . Among them halogen exchange , especially the fluorination was considered to be the effective path for the synthesis of selectively fluorinated aromatic compounds .

通过苯胺与7-乙酰氨基-4-羟基-2-萘-β-（N，N-二甲基氨乙基）磺酰胺的重氮化偶合反应合成了双偶氮染料。

Diazo dye were prepared by the diazo coupling reactions of aniline and 7-acetamide-4-hydroxy-2-naphthalene - β - ( N , N-dimethylaminoethyl ) sulfonamide .

亚硝酸根&番红O重氮化偶联反应机理研究

Study on the Mechanism of Diazotization Coupling Reaction of Nitrite with Safranine O

对氨基苯磺酸重氮化偶联反应的光谱特性及其分析应用

Study on the Spectral Characteristic of the Diazotization-Coupling with Sulfanilic Acid and Its Analytical Application

以生猪猪胆为实验材料，用水解法提取胆红素，使胆红素与重氮化试剂反应。

In this paper , we used bile from pig for experiment , and used hydrolytic way to purify bilirubin .

这是一个五步反应，包括重氮化偶合反应、氯置换反应、缩合反应、水解反应、缩合反应。

This was a five - step process involving : diazo coupling reaction , chloridization , condensation , hydrolysis , condensation respectively .

利用芳胺的重氮化偶合反应，采用误差反向传播人工神经网络方法，对于吸收重叠的3组分芳胺类化合物体系进行同时测定；

A method for the determination of arylamines , aniline ,α - naphthylamine and o-chloraniline , which absorption spectra are seriously overlapped , was proposed by back propagation artificial neural network ( BP - ANN ) - spectrometry based on the diazo coupling reaction of arylamines with α - naphthol .

酸性黄是经过重氮化和偶合反应合成的一种偶氮染料，对它进行了IR、1H-NMR和元素分析的表征。

An acid yellow was synthesized by diazo and azo , and characterized by elementary analysis , IR and 1H-NMR .

亚硝酸根重氮化-偶联反应共振散射光谱测定

Application and study on resonance scattering spectra of diazotization - coupling reaction

芳香伯胺重氮化的特殊反应条件

Special reaction conditions of diazotization on of aromatic amines

该技术在重氮化、偶合反应中的应用，取得了高于常规反应器的收率和纯度。

Improved yield and selectivity are observed while applying this technology on diazo-coupling reactions .

重氮化与偶合反应的理论研究

Research in Theory of Reoxidation and Coincidence Reaction

通过热力学及动力学计算，重氮化-席曼反应是剧烈的放热反应，与实验结果相吻合。

The reaction was proved to be an exothermic reaction by dynamic and thermodynamic which agrees with experimental results .

方法利用磺胺-N，N-二甲基苯胺-亚硝酸根间发生的重氮化-偶联反应，通过共振散射光谱法测定痕量亚硝酸根。

Methods RLS spectra was used to determine trace nitrite by the diazotization-coupling reaction between sulfanilic amide-N , N-dimethyl aniline-nitrite .

以自制的对甲酰基苯偶氮变色酸和4氨基安替吡啉为原料，经重氮化、偶合反应制备上述目标化合物，产率为52.6%。

It was prepared from 4-aminobenzaldehyde and 3 - ( 4-formylphenylazo ) - 4,5-dihydroxynaphthalene-2,7-disulphonic acid by diazotization , coupling reaction , yield was 52.6 % .