查询词典 ceric

The optimal synthesis conditions are that when the mass ratio of amylum and acrylamide is 3:1; NaOH is 75% of acrylamide; the concentration of ammonium ceric nitrate is 5 mmol/L; the N, N′-methylenebisacrylamide and acrylamide is 0.2%; and the reaction temperature controlled in (60±2)℃, the water absorptivity of produced super absorbent can reach to 750 g/g for tap water.

最佳合成条件是：在淀粉与丙烯酰胺的质量比为3：1、氢氧化钠为丙烯酰胺质量的75%、硝酸铈铵的浓度为5mmol/L、交联剂N，N'-亚甲基双丙烯酰胺与丙烯酰胺的质量比为0.2%、反应温度控制在(60±2)℃的条件下，制得的保水扩蓄剂吸水率可以达到750 g水／g。

Rate constants of oxidation reaction of anethole to anisaldehyde by Ceric Sulfate at different temperature(15-35℃)were measured.

制备茴香醛是用对甲氧基甲苯作为原料氧化合成茴香醛，[2，3]但近年石油化工原料价格猛涨，因而以我国广西盛产的茴香油为原料制备茴香醛的方法得以重视[4-9]。

The processing abilities, structures and corrosion properties of the ceric aluminum brass and the arsenical aluminum brass were studied by means of metallographic analysis, microhardness measurement, mass loss measurement, electrochemical testing and scanning electron microscopy.

采用金相组织分析、显微硬度分析、质量损失分析、电化学测试和扫描电镜等手段研究铈铝黄铜和砷铝黄铜的加工性能、组织结构和耐蚀性能。

Potassium dichromate was replaced by ceric sulfate as oxidant to determine the COD in this study.

采用硫酸高铈作为氧化剂来测定难降解垃圾渗滤液的COD，测定结果与重铬酸钾法进行比较。

Ceric sulfate ; chemical oxygen demand; ungraded garbage percolate ; determination

硫酸高铈； COD ；难降解垃圾渗滤液；测定

The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied. The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate, and their yields were 86.7% and 89.3% respectively.

同时就溴化反应中的溶剂以及甲酰化反应中的氧化剂对两类反应的影响分别进行了研究，结果表明溴化反应的最佳溶剂为四氯化碳，反应产率达到86.7%，甲酰化反应的最佳氧化剂为硝酸铈铵，产率达到89.3%。

School of Environmental Science and Engineering, Shandong University, Shandong Jinan, 250062Abstract: The preparation methods of nanometer ceric oxide at home and abroad were reviewed, their advantages and disadvantages were discussed, and its application fields were introduced too.

山东大学环境科学与工程学院，山东济南，250062摘要：综述了国内外纳米二氧化铈的制备方法，比较了各方法的优缺点，并介绍了纳米二氧化铈的应用领域。

A method for synthesis of isobutyl acetate based on ceric sulfate as catalyst was developed.

以冰醋酸、异丁醇为原料，硫酸高铈为催化剂合成乙酸异丁酯。

The infrared spectrum results indicate that the complexes chelate ceric ions by amino group.

通过红外光谱确定铈离子是与壳聚糖的胺基发生络合作用的。

First of all, acrylamide, pentaerythrite and ammonium ceric nitrate were mixed by some concentration in an aqueous solution.

首先将丙烯酰胺、季戊四醇和硝酸铈铵分别配制成一定浓度的水溶液。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥