The graft polymerization of acrylonitrile on Crosslinked polyvinyl alcohol microspheres CPVA microspheres was performed by using cerium ammonium sulfate as initiator, and grafted microspheres CPVA-g-PAN were prepared. Subsequently, the grafted PAN was converted into poly via amidoximation reaction with hydroxylamine hydrochloride as reagent, resulting in the functional microspheres CPVA-g-PAO. The chemical structure and physicochemistry characters were adequately characterized with infrared spectrum, scanning electron microscope and determining Zeta potential. The effects of main factors on the amidoximation transform reaction of the grafted PAN were researched with emphasis, and the adsorption property of the functional microspheres CPVA-g-PAO for some biomolecules was examined preliminarily with uric acid as a model biomolecule.

以硫酸鈰銨為引發(fā)劑99riAV视频国产，實施了丙烯腈在交聯(lián)聚乙烯醇微球表面的接枝聚合高清FreeXXXX性国产意思，制備了接枝微球CPVA-g-PAN，然后以鹽酸羥胺為試劑在线观看av外国，通過偕胺肟化轉變十八岁禁看免费黄色视频，將接枝的PAN轉變?yōu)榫圪砂冯浚频昧私又τ芯圪砂冯康墓δ芪⑶駽PVA-g-PAO国产欧美第一页，采用紅外光譜法AV网站在线观看亚洲产一二三区、掃描電子顯微鏡及Zeta電位測定等法，對功能微球CPVA-g-PAO的化學結構及物理化學特性進行了表征波多野结衣123操操超碰干，重點考察了各主要因素對接枝PAN的偕胺肟化轉變反應的影響91po精品国产，也以脲酸為模型分子，初探了功能微球CPVA-g-PAO對生物分子的吸附性能高清狼友网。

In order to minimize the pollution of the environment with waste acids and/or waste acidic salt solution, following measures were taken:(1) Instead of using excess sulfuric acid, sulfonation reaction was carried out in the presence of excess toluene and the water produced during the sulphonation was removed by azeotropic distillation.

在CLT酸生產(chǎn)中91在线国产视频观看，為了使廢酸和酸性廢鹽水對環(huán)境的污染減少到最低程度，采取了如下的措施：(1)與使用過量硫酸相反成都毛片，磺化反應是在過量甲苯的存在下進行国产精品亚洲獵奇在线观看，同時用共沸蒸餾方法移出了磺化過程中產(chǎn)生的水精品久9久久久久。

The recent processes in the domestic sulphonation units are introduced which concern heat energy recovery, utilizing SO3 from sulfuric acid unit and replacing ESP with fiber precipitator.

介紹了近年來國內磺化裝置在熱能回收、采用硫酸裝置吸收SO_3氣體人妖色偷偷福利网站、用布林克多芯纖維除霧器取代靜電除霧器處理磺化尾氣諸方面所作的努力和工藝流程黄页视频在线学习，對建設資源節(jié)約、環(huán)境友好型的新裝置及老裝置改造有借鑒作用一本到高清久久婷婷国产。

As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.

對于高極性国产精品黄色视、高沸點的固體產(chǎn)物均苯三甲酸，分別采用紅外光譜看黄9999、氣質聯(lián)用色色色干、氣相色譜、酸值滴定等分析手段進行了表征：利用紅外光譜黄色视频在线播放国产、氣質聯(lián)用的方法進行產(chǎn)物的定性分析免费的av网，并與在同一儀器、同一條件下做出的標準譜圖進行比對人人干人人操超碰chinese；采用硫酸-甲醇酯化法和快速酯化法制備出均苯三甲酸三甲酯国产精品视频区1，對其進行氣相色譜FID定量分析，進而確定固體產(chǎn)物中均苯三甲酸的純度一級免费视频；用酸堿滴定法確定固體產(chǎn)物的酸值A片黄片操屄，以對固體產(chǎn)物中均苯三甲酸的純度進行驗證。

The waste oils was esterified with continuous feeding methanol catalyzed by NaHSO4 as catalyst.

方法］在廢油脂與甲醇連續(xù)進料的酯化反應條件下久久久久久精品毛片A级，研究了硫酸氫鈉催化廢油脂與甲醇酯化反應三级天堂网观。

Methods: 2ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2ethyl5nitro aniline. The product was then synthesized to 3methyl6nitro1Hindazole by using ringclosing reaction in the presence of NaNO2, and then ethylated to obtain 2,3diethyl6 nitro2Hindazole. The latter compound was then reduced by SnCl2/Hcl to get target compound 2,3diethyl6nitro2Hindazole.

以2乙基苯胺為原料經(jīng)醋酐酰化亚洲久色、濃硝酸低溫硝化及去跹侵蘧稟片；Ｗo合成2乙基5硝基苯胺，后用亞硝酸鈉關環(huán)得3甲基6硝基1H吲唑在线看手机毛片，經(jīng)硫酸二甲酯甲基化得2真实国产精品伦，3二甲基6硝基2H吲唑，最后用氯化亞錫將其還原得到目標產(chǎn)物亚洲一区有码在线，通過1H NMR確定結構與目標產(chǎn)物一致6080午夜视频在线观看。

Methods: 2-ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2-ethyl-5-nitro aniline. The product was then synthesized to 3-methyl-6-nitro-lH-indazole by using ring-closing reaction in the presence of NaNO2, and then ethylated to obtain 2, 3-diethyl-6- nitro-2H-indazole. The latter compound was then reduced by SnC12/Hcl to get target compound 2, 3-diethyl-6-nitro-2H-indazole.

以2-乙基苯胺為原料經(jīng)醋酐酰化日韩欧美综合在线、濃硝酸低溫硝化及去豕遗自谙呤悠担基保護合成2-乙基－5-硝基苯胺，后用亞硝酸鈉關環(huán)得3-甲基－6-硝基－1H-吲唑人成视频在线观看免费，經(jīng)硫酸二甲酯甲基化得2，3-二甲基－6-硝基－2H-吲唑国产免费性交片，最后用氯化亞錫將其還原得到目標產(chǎn)物日韩福利短片在线看免费视频播放网站，通過1HNMR確定結構與目標產(chǎn)物一致欧美重a片视频。

Because of its nonpoisonous, DMC can substitute phosgene , dimethyl sulfate or methylating used as methyl pharmaceutical to improve the security of production and reduce the environmental pollution; As the solvent, DMC can substitute fluorine lyons , methyl chloroform , trichloroethylene , benzene , dimethylbenzene, etc.. And it can be used as the paint dope, clean solvent. As gasoline additive, DMC can raise hard octane value and oxygen content and improve its antiknock possibility.

由于DMC無毒，可替代劇毒的光氣国产又大又粗又硬又湿、硫酸二甲酯等作為甲基化劑或羰基化劑使用国产永久免费精品999，提高生產(chǎn)操作的安全性，降低環(huán)境污染中文字幕三级视频大全；作為溶劑久久无码日韩毛片乐播，DMC可替代氟里昂、三氯乙烷亚洲第一中文字幕、三氯乙烯91人洗澡人人澡人人爽人人模、苯、二甲苯等用于油漆涂料91日韩精品一区二区亚洲专区、清潔溶劑等97无码免费人妻视频；作為汽油添加劑，DMC可提高其辛烷值和含氧量国产91最新第一，進而提高其抗爆性国产操视频网。

Among them, nitrate-sulfuric acid system with higher nitrating activity can get high yields at mild condition in the nitration of deactivated aromatic compounds and could be used in the laboratory and industrial applications.

其中，硝酸鹽/硫酸體系具有較強的硝化能力一级国产精品，對于鈍化芳環(huán)四虎在线观看成人影院免费，可以在溫和條件下以高收率得到硝化產(chǎn)物，在實驗室制備或工業(yè)應用中具有較高的應用價值久久精影院；其他硝化方法由于各種原因暫時不能對鈍化程度較高的芳環(huán)進行硝化一级毛片免费毛片一级毛片，還需進一步研究具有較高活性的硝化體系。

Chemical raw materials: include a variety of plating materials and metal surface treatment agent: sodium such as tin, stannous chloride, pyrophosphate Asian tin, copper sulfate, nickel acetate, copper acetate, nickel fluoride, cobalt sulphate, acetic acid cobalt, hydrofluoric acid, anion exchange resin, cation exchange resin, scale inhibitors, cleaning agents, detergents,the phosphating agent, plate washer water, with the exception of Prince agents, rust removal agent, the American Iron and Steel room temperature blackening agent, on behalf of behalf of the black-white (open cylinder agents, supplements), and alloys such as gun color..

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