酸化剂

The reaction time, reaction temperature and catalyst influencing on esterification were investigated, and the acid value, flashing point and other properties were determined.

考察了反应时间、反应温度、催化剂等反应条件对酯化反应的影响，并对增塑剂的酸值、闪点及其他主要性能指标进行了测定，改进了酯化反应工艺条件，讨论了样品色泽、酸值及闪点的影响因素。

The effect of the accelerators in phosphating solution on phosphatization was investigated. The reaction mechanism was also studied.

为此研制了一种含硝酸肌和氯酸钠的复合促进剂，考察了复合促进剂所含物质对磷化液磷化效果的影响，对其作用机理进行了讨论。

AIM: This experiment was designed to study the protective effects of maslinic acid, a novel glycogen phosphorylase inhibitor, on cerebral ischemia in mice.

目的：研究糖原磷酸化酶抑制剂-山楂酸对缺血性脑损伤的保护作用，初步探讨糖原磷酸化酶抑制剂的脑缺血保护机制。

It is found that use of capsulated red phosphorus or red phosphorus mixed with some titanate coupling agent can increase the blending of red phosphorus with PE and thus improve the quality and processing properties of products.

结果可见用微胶囊化红磷或用钛酸酯偶联剂处理的红磷可以改善红磷与树脂的相溶性。另外，钛酸酯偶联剂的加入还改善了树脂的加工性能与产品特性。

Using pentaerythritol as initiator, boron trifluoride diethyl etherate as catalyst.dichloroethane as dispersion agent, the chloride polyether polyol is synthesized based on the mechanism of cationic ring-opening polymerization of epiclilnrohyclrin.The azide polyether polyol is synthesized, in DMF through A and sodium azide, and the non-reported azide energetic curing agent is synthesized through the adduction of B and IIDI.

以季戊四醇为起始剂，三氟化硼乙醚为催化剂，1，2—二氯乙烷为分散剂，环氧氯丙烷经阳离子开环聚合反应制成氯化聚醚多元醇，A在N，N—二甲基甲酰胺中与叠氮化钠反应制得叠氮聚醚多元醇，B与六亚甲基二异氰酸酯加成反应制得未见文献报道的叠氮固化剂。

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

Bromoundecanoic acid was synthesized with 10-undecanoic acid and hydrobromic acid as raw materials. The effects of initiating agent, solvent, reaction temperature, the ways of disposal, ripening time etc. on the reaction and product were investigated.

以10-十一烯酸和溴化氢为原料合成11-溴代十一酸，考察了引发剂、溶剂、反应温度、后处理方法、熟化时间等因素对反应和产品的影响。

In the synthesis process, aluminum isopropoxide or pseudo-boehmite is used as aluminum resources, and hexacosanoic propylamine and isopropylamine or the mixture of both are used as templates, thereby realizing the purposes of single feeding adoption, relatively mild crystallization condition, suitable water-solid ratio and great template dosage reduction.

一种用杂原子取代AEL骨架结构磷铝酸盐分子筛的合成方法，该方法是以氯、钛、钴、钙、钯、锌、铈和锆等杂原子为杂原子物料来取代磷铝酸盐分子筛的AEL骨架结构，并在合成过程中以异丙醇铝或拟薄水铝石为铝源，正二丙胺、异二丙胺或两者的混合物为模板剂，从而实现采用一次投料，晶化条件相对温和，水固比适宜，模板剂用量大大下降的目的。

Benzyl acetate was synthesized from acetic acid and benzyl alcohol as raw materials with phosphotungstic acid as catalyst.

介绍了以冰乙酸和苯甲醇为原料，采用磷钨酸作催化剂合成乙酸苄酯的方法，考察了反应物醇酸摩尔比、催化剂用量、带水剂用量、反应时间、带水剂品种、催化剂重复使用对酯化率的影响。

The synthesization technics of MPEG- MAA was studied in this paper,which is an important intermediate used for preparation of polycarboxylate superplasticizer.

本文对制备聚羧酸系减水剂的重要中间体——甲基丙烯酸聚乙二醇单甲醚酯的合成工艺进行了研究，考察了反应时间、催化剂对甲苯磺酸的用量、阻聚剂对苯二酚的用量、反应温度及甲基丙烯酸与聚乙二醇单甲醚的用量比对酯化率的影响。

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。