Is a high-tech private enterprise, located in Laohekou City, Hubei Province, the main products are: 3,4 - dichloro-nitrobenzene; 3,4 - dichloroaniline; 2,4 - dimethyl-nitramine p; 2,4 - dimethylaniline; 2,6 - dimethyl-nitrobenzene; 2,6 - dimethylaniline; 3,5 - dimethyl-nitrobenzene; 3,5 - dimethyl Aniline; acrolein; Glutaraldehyde and other fine chemical products.

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Temperature is key factor for natural attenuation of nitrobenzene. The present study investigated the nitrobenzene of natural attenuation and nitrobenzene of bio-argumentation at 4℃and 20℃.

利用人工配制的2種不同濃度（1000和100μg·kg-1）的硝基苯污染底泥，研究了4℃和20℃ 2種溫度條件下硝基苯的自然衰減和生物強化降解情況免费观看激情视频。

First, the preparation of l,2-dichloro-4-nitrobenzene, which l-chloro-4-nitrobenzene reacted with chlorine in a self-designed chlorinator, in presence of Lewis acid catalyst,.was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield of l,2-diehloro-4-nitrobenzene was 83.26%.

為此色99久久综合网，本文首先在自行設計的塔式氯化器中，以對硝基氯苯為原料榴莲视频ios频，路易氏酸作催化劑www.99.cao，分子氯氯化合成3，4-二氯硝基苯(合成3-氯-4-氟-硝基苯的原料)，根據(jù)該氯化過程特征级特大黄片视频影院国，利用正交試驗設計方法結合單因素實驗考察了有關因素對氯化過程的影響亚洲成a人片在线观看无码专区，優(yōu)化得到了最佳的氯化工藝條件，3人人操午夜免费官网，4—二氯硝基苯的收率可達83.26％国产91福利啪。

Using solution culture experiment, discussed the influnce of nitrobenzene to the germinationrates and seedling growth of ten leguminous crops, and results showed that, when the nitrobenzeneconcentration was 1～100mg·L~(-1), it had little influnce to germination rates of leguminous crops,with the increasing of nitrobenzene concentration, emergence rates of leguminous crops decreased,but no significance compared with control, and found that the toxicity of nitrobenzene toleguminous related with the concentration, the thresholds of nitrobenzene toxicity to differentleguminous crops were different, under the test conditions, the inhibition of root was larger thanhypocotyl, according to the relationship between the inhition rates of root and hypocotyl length andthe nitrobenzene concentration, the sensitive order of the ten leguminous crops to nitrobenzenewas:small-seedsoybean＞kidneybean＞Dongnong42＞brownbean＞Dongnong49＞Dongnong46＞ormosia＞french bean＞black bean＞mung bean.

本研究探索了硝基苯對十種豆類作物的發(fā)芽率及幼苗生長的影響，結果表明：硝基苯濃度為1～100mg·L~(-1)時美女黄色大片免费观看，對豆類作物發(fā)芽率影響不大内地50岁熟妇网站，隨著硝基苯濃度的增加，豆類作物出苗率有所降低亚洲少妇无码视频，但與對照差異不顯著黄色福利视频网站，研究發(fā)現(xiàn)硝基苯對豆類作物的生物學毒性同濃度有關，硝基苯對不同的豆類作物的毒害閾值不同日本亚洲视频。

Experimental results show that the different substituted location and different substituted group on benzene cycle would result in the diversity of reduction properties of substituted aryl nitrobenzene. Substituted nitrobenzenes with withdrawing group will be reduced at more positive potential, while those with repelling group will be reduced at more negative potential. In addition, the reduction potential of nitro group of o-nitrobenzene shifts more negative due to the effect of space resistance.

結果表明国产真人无码AV一级一级，芳族硝基化合物在苯環(huán)上的取代基位置不同以及在相同位置上取代基的種類不同均可使各芳族硝基化合物的電還原性能發(fā)生較大差異：吸電子取代基在電還原過程中電位較正，推電子取代基的電還原電位較負：鄰位取代基在反應過程中由于空間位阻效應操来操去网站，苯環(huán)上的硝基在電還原時電位往負方向移動国产日韩欧美色另类。

The catalyst, palladium supported with chitosan condensated with salicylaldehyde, was studied in hydrogenation ofα-octene, nitrobenzene, 4-nitrophenol and m-dinitrobenzene, it was active and good selectivity forα-octene and nitrobenzene, when the activation time is 90 min, the catalyst showed the best hydrogenation active.

殼聚糖縮水楊醛負載不同比例PdCl_2的催化劑對α-辛烯、硝基苯亚洲第一天堂AV综合网、4-硝基酚和間二硝基苯的催化性能進行了研究国产99久久久国产精品性色，結果表明該催化劑活化90 min時加氫催化活性最好，對α-辛烯美女宗合网，硝基苯的催化選擇性在催化5 h時達到了100%欧美丝袜熟女。

Humic acids, oxidizable fraction and lipids were the main fractions affecting the sorption capacity. The humic acids had the maximum adsorption capacity for nitrobenzene and aniline, the lipids naturally present in the soil strongly compete for hydrophobic sorption sites within the soil organic matter, and the adsorption capacity of mineral surface for nitrobenzene and aniline were only 2.31mg·kg-1 and 3.63mg·kg-1, respectively.

硝基苯和苯胺在濕地土壤中的吸附主要受腐殖酸、易氧化有機質(zhì)組分和脂類化合物的影響91精品婷婷国产综合久久，其中腐殖酸對硝基苯和苯胺具有最大的吸附容量超级乱婬视频中文无码；脂類化合物表現(xiàn)為與硝基苯、苯胺競爭土壤有機質(zhì)結構中的吸附位點制服丝袜熟女一区二区，去除脂類化合物后殘余物的吸附量增大色伊人网站；礦物組分對硝基苯和苯胺的吸附是次要的，吸附容量僅為2.31mg·kg-1和3.63mg·kg-1你懂的欧美视频。

A new triphenylamine-containing aromatic diamine monomer, 4-[4-(1-adamantyl)phenoxy]-4',4-diaminotriphenylamine, was synthesized from cesium fluoride-mediated N-arylation of 4-(1-adamantyl)-4'-aminodiphenyl ether with 1-fluoro-4-nitrobenzene and subsequent reduction of the dinitro intermediate.

摘要 本研究首先使用 4-(1-adamantyl)-4'-aminodiphenol ether 與 1-fluoro-4-nitrobenzeneA片无遮挡很黄很黄的视频，於DMSO中，以氟化銫為媒介天天添天天干，進行氮-芳香化反應（N-arylation）欧美一级A片欧美大片在线视频，隨后再進行中間產(chǎn)物的還原反應，制得一個種新型具有三苯胺結構的芳香族二胺單體 4-[4-(1-adamantyl)- phenoxy]-4'玖玖爱免费视频精品观看39，4-diaminotriphenylamine国产精品自拍偷。

The results showed that WC/CNT nanocomposite exhibited better catalytic activity for the electroreduction of nitrobenzene than separate WC nanoparticles and CNTs,and it also had good electrochemical stability during the process of electroreduction of nitrobenzene in acid solution.

結果表明久久精品视频99精品视频，WC/CNT納米復合材料對硝基苯的電催化活性優(yōu)于納米WC和CNT，且WC/CNT納米復合材料在硝基苯電還原過程中保持良好的化學穩(wěn)定性欧美激情第三页。

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.

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