硫酸

Only two of these additives, ferrous sulfate and methanol were effective on the grafting of AAm.

而在AAm反应体系中，只有硫酸亚铁和甲醇有利于接枝反应。

The images of AAM were characterized by scanning electron microscope , transmission electron microscope and atom force microscope .

主要研究程果和结论如下：（1）在硫酸、草酸和磷酸电解液中，在不同的阳极氧化条件下制备出具有不同大小、密度、深度和纵横比的纳米孔阵列AAM模板。

In Figure 2, the reaction of MDNPH with acetaldehyde in sulfuric acid is presented.

图2、反应与乙醛mdnph硫酸案。

Methane was transformed to methyl bisulfate first, and then methyl bisulfate was hydrolyzed to methanol.

甲烷在反应中首先转化为硫酸甲酯，硫酸甲酯随后水解为甲醇。

Results Clopidogrel bisulfate could be well separated from aspirin under the conditions mentioned above.

结果 在该色谱条件下，硫酸氢氯吡格雷与阿司匹林可达到较好分离，硫酸氢氯吡格雷在12.0~100.0 mgL(-1)内质量浓度与峰面积呈良好的线性关系(r=0.9995)。

Specializing in the production of powder processing enterprises, the main production of precipitated barium sulfate and natural barium sulfate powder.

专业生产粉末加工企业，主要生产沉淀硫酸钡和天然硫酸钡粉末。

According to the production experience for many years,the factors of effecting on the quality of precipitated barium sulfate are summarized and the measures for improving the product quality are put forward.

根据多年的生产经验，总结出影响沉淀硫酸钡产品质量的因素；就原料液含杂质超标以及各生产工序工艺条件控制不合理提出解决问题的办法；提出了提高沉淀硫酸钡产品质量的措施。

Barium sulfate are sold every year nearly 10,000 tons, barium sulfate products are selling specialized households.

硫酸钡年销售量达近10000吨，是硫酸钡系列产品销售专业户。

We synthesized polynitrobenzenes by oxidation of polynitroanilines by peroxysulfuric acid (hydrogen peroxide dissolved in sulfuric acid, it is also known as Caro's acid) several years ago.

我们曾在若干年前用过硫酸(过氧化氢溶于硫酸中，亦称卡洛氏酸)氧化多硝基苯胺而合成了多硝基苯类(硝基数3至6)。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。