酸化剂

Refineesterification with advanced technology and granulation technology, relying on sophisticated production equipment and improve the analytical tools, produces high quality PVC plasticizers, plastic particles and other fine chemical products, including plasticizers Products including phthalate esters, benzene Sanjia esters, adipate esters, maleic acid ester and citric acid ester.

梁溪精化拥有先进的酯化技术和造粒技术，依靠精良的生产设备和完善的分析手段，生产高质量的聚氯乙烯增塑剂、塑料粒子和其它精细化工产品，其中增塑剂产品包括苯二甲酸酯、苯三甲酸酯、己二酯酯、马来酸酯以及柠檬酸酯。

The results indicate that improving temperature to reflux, using low polarity solvent as dispersion medium and proper molar ratio of tetrabutyl titanate to stearic acid can bring out good modification. The function of tetrabutyl titanate is to react with the surface hydroxyl groups and adsorbed H2O on the powder particles to produce new binding sites such as M—O—Ti—OC4H9and M—O—Ti—OH, which can easily react with the carboxylic acid. As temperature increases from room temperature to reflux temperature, the reactions between RCOO- and Ti change from coordinate bonds to covalent bonds, which makes the carbon chains of stearic acids more strongly bound with the powder particles surface.

研究结果表明，提高处理温度、适当增加复合改性剂中硬脂酸的量并选用极性弱的有机溶剂可达到比较理想的改性效果；钛酸四丁酯的作用是与粉体粒子表面的羟基以及吸附水反应产生偶联点，如M—O—Ti—OH，这些偶联点易于与羧酸反应；在低温时RCOO-与偶联点的Ti之间以配合物的形式发生作用，在回流温度下处理时，主要发生酯化反应，使硬脂酸更牢固地嫁接到粉体粒子表面，改性效果更好。

In the asymmetric hydrogenation of ethyl pyruvate catalyzed by 0 5% Rh/PVP TiO 2, the chiral modifier cinchonidine not only induces the enantioselectivity, but also accelerates the reaction rate greatly.

研究了辛可尼定作手性修饰剂修饰的负载型纳米铑簇合物催化剂(0 5 %Rh/PVP TiO2 )催化丙酮酸乙酯不对称氢化反应，在该反应中手性修饰剂辛可尼定不仅具有对产物生成的手性诱导作用，而且对反应具有明显加速作用；在优化反应条件后，反应的TOF和对映选择性分别可以达到 5 8 0min-1和

Results showed that: there were best range of the amount of solicitation reagent,the amount of polyethylene glycol, the length of the polyoxydation ethene side chain and the best time temperature and of the esteri.

通过确定不同的引发剂用量、聚乙二醇投入量、聚氧化乙烯侧链长度以及酯化反应的温度和时间，对所合成的新型聚羧酸系外加剂的性能进行比较。

Methods Activate GAMP with cyanogens bromide and prepare GAMP-protein conjugates using ADH as a linker and EDAC as a coupling agent.

方法采用溴化氰活化多糖，以无水己二酸二肼为连接剂，1-乙基-1-3-(3-二甲基氨基-丙基)-碳化二亚胺为偶联剂，制备结合物并免疫小鼠，检测小鼠血清中抗GAMP与抗载体蛋白抗体及抗GAMP抗体的杀菌活性。

Methods Activate GAMP with cyanogens bromide and prepare GAMP-protein conjugates using ADH as a linker and EDAC as a coupling agent. Immunize mice with the conjugates and determine the antibodies against GAMP and carrier proteins in their sera as well as the bactericidal activity of antibody against GAMP.

采用溴化氰活化多糖，以无水己二酸二肼为连接剂，1-乙基－1-3-（3-二甲基氨基－丙基）－碳化二亚胺为偶联剂，制备结合物并免疫小鼠，检测小鼠血清中抗GAMP与抗载体蛋白抗体及抗GAMP抗体的杀菌活性。

The research indicated that under the compound use of hydroquinone and methyl quinone or independent use of phenothiazines or nitrogen oxygen free radical made the polymerization retarder, opposite-methyl-phenylsulfon made the esterification catalyst, toluol made the backflow including water condition, the acid mellowly compared to when it was 1.15, the production rate of the synthesis methylacrylic acid polyethylene glycol single methyl ether (400) ester may achieve 98.9%, was extremely similar to the overseas product functional group structure.

研究表明，在氢醌、甲醌复合使用或者单独使用吩噻嗪、氮氧自由基哌啶酮作阻聚剂，对甲苯磺酸作酯化催化剂、甲苯作回流带水的条件下、酸醇比为1.5时，合成的甲基丙烯酸聚乙二醇单甲醚(400)酯产率可以达到98.9%，与国外产品官能团结构十分相似。

During the manufacturing of the critical intermediate cephalosporin nucleus --7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt, first the feasibility of the one-pot synthetic route of open loop, closed loop and ozonization when chlorine is passed over is qualified by experiments. Then the critical factors that will influence this reaction are studied as follows: the mol ratio of triphenyl phosphite and Diphenylmethyl 3-hydroxy-7-phenylacetaminoceph-3-em-4-carboxylate-l-oxide is four to one; the quantity of the stablizer should be at least more than two to one. The temperature of the system must be 25℃ when chlorine is passed over so that the hydrochloride can be precipitated to obtain cephalosporin nucleus of cefaclor--7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt.

在制备关键中间体头孢母核7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐时，先通过实验验证把开环、闭环、臭氧化三步在通入氯气时并为一锅煮的合成路线的可行性之外，又研究了影响该反应的几个重要因素：亚磷酸三苯酯与3-羟基-7-头孢烷-5-亚砜-2-甲酸二苯甲酯的摩尔比为4：1；稳定剂2-甲基-2-丁烯的用量至少大于2：1，通入氯化氢气体时体系温度在25℃时盐酸盐则能够顺利析出，获得头孢克洛的头孢母核—7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐。

Study on Phosphatization and Passivation Two in One Treatment Process;2. Effects of the different accelerants(La and Ce nitrate,Na nitrate and Na molybdate) on phosphatization were discussed.

提出在表面生成磷化膜以提高不锈钢的耐磨与耐蚀性能的工艺方法，讨论了各种促进剂(亚硝酸钠、钼酸钠、硝酸铈和硝酸镧)对磷化膜形成的影响，探讨了稀土对磷化的影响机理。

Respectively, glutamic acid derivatized β-CD has been synthesized with epoxy chloropropane as the intermediate, a water-insoluble yellow liquid was got after the acetylating of the by using acetic anhydride, which was used as a novel gas chromatographic CSP; A water-soluble β-CD polymer cross-linked with epoxy chloropropane has been synthesized, and the derivatives of β-CD polymer were synthesized by its alkylating and acetylating. The different β-CD derivatives were coated on silica capillary columns by dynamic method, the chromatographic properties and retention behaviors of the fused silica capillary columns were studied, the results showed that the β-CD derivatives had good stereoselectivity and separation results to some compounds, especially to various positional isomers and enantiomers.

本文还分别以环氧氯丙烷为中间体，合成了七{2，6-二-O-[3-(1，3-二羟基丙氨酸)]}-β-环糊精，再用醋酸酐将其乙酰化，得到了一种淡黄色粘稠液体，合成了一种新型的环糊精衍生物；以环氧氯丙烷作交联剂合成了一种水溶性的β-环糊精聚合物，再将其烷基化和酰基化，合成了β-环糊精聚合物的不同衍生物，用动态法将不同类型的β-环糊精衍生物涂渍在石英毛细管柱上，通过对所制备柱柱性能的测试和对一系列化合物的分离和保留行为的研究，结果表明所合成的β-环糊精衍生物对各类化合物，特别是对位置异构体和对映异构体具有较好的分离效果，显示了很强的立体选择性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。