乙酸的

Because of its special structure, it has been considered to have potential applications in electrode materials, catalysis materials, magnetic materials and gas-sensing materials.

本文研究了过渡金属复合氧化物的制备及其在催化酯合成和废水处理中的应用，主要内容如下：制备了ZnMn_2O_4纳米催化剂，并将其应用于催化合成乙酸正丁酯。

Vitamin A is added in the AD calcium salt in the form of ethyl ester,which is insoluble in water.

AD 钙盐中的维生素A是以其乙酸酯的形态加入，而后者不溶于水。

Treatment of the diacetoxy-calix [4] arene with a series of ditosylates in dry MeCN in the presence of NaOH resulted in formation of electron-rich calix [4] areneocrowns, which reacted with 4, 4'-bipyrindinium and p-bis -benzene at room temperature in dry MeCN to afford self-assembling [2] catenanes by π-π stacking interaction.

以杯[4]芳烃为原料，通过三氟乙酸铊将其氧化成醌，醌类化合物在Zn粉、冰醋酸、少量盐酸和过量的乙酸酐中反应得到双乙酰化产物，利用氢氧化钠使其水解，然后再与各种对甲苯磺酸二酯进行环化反应，得到一系列具有富电子空腔的杯[4]芳烃并冠醚。

Half generation PAMAM were separated by the method of colum chromatography with methanol and ethyl acetate as eluents.

利用甲醇和乙酸乙酯混合溶剂作为淋洗剂对半代的树状大分子进行柱层析分离，合成了从- 0.5 G - 4.0 G的PAMAM树状大分子。

Finally, the production situations of glycollic acid at home and abroad are analyzed.

并对羟基乙酸在化学清洗、助剂和材料等方面的应用进行了详细的介绍。

The rate constants and yields of aromatic halides containing substitute s with different electrophilicities were investigated.

三氟乙酸钠在以CuI为催化剂的条件下与卤代芳烃进行取代反应，生成相应的三氟甲基化合物。

Two haptens of mono-p-nitrophenyl phosphonates were designed and synthesized according to the structural features of the substrate and its hydrolytic transition state. The phosphonate haptens were coupled to the carrier proteins bovine serum albumin and keyhole limpet hemocyanin .

以对硝基乙酸苯酯水解反应中间体的结构信息进行分子设计，经过Arbzov等五步化学反应合成了二种对硝基苯基类膦酸酯半抗原，将其与载体蛋白（牛血清白蛋白BSA和钥孔〓血兰素KLH）偶联，制得了具不同抗原价（10～60）的半人工合成全抗原。

The asymmetric reduction of prochiral P-oxo ester, aromatic ketone and aliphatic ketone to its corresponding chiral alcohol by yeast cells were studied respectively in this work when ethyl 4-chloro-3-oxobutyrate, acetophenone and 2-octanone were as the model substrates.

本文以4-氯乙酰乙酸乙酯、苯乙酮和2-辛酮分别为β-羰基酯、芳香酮和脂肪酮的模型底物，研究了利用活性酵母细胞催化这三类前手性酮不对称还原合成相应手性醇的反应特性。

Results: The polymer taking MAA as functional monomer and acetic ether as solvent obtained higher selectivity for desloratadine.

结果：研究表明，采用MAA为功能单体，以乙酸乙酯做溶剂合成的地氯雷他定MIP对模板分子的结合性最佳。

The 16S rDNA analysis indicated the strain had a 98.2% of homology with Pseudomonas aeruginosa. Its best carbon source is glucose and sodium acetate, and the best nitrogen source is ammonium chloride、nitrate and peptone.

该菌的良好碳源和氮源是葡萄糖、乙酸钠和蛋白胨、氯化铵、亚硝酸钠复合成份，纤维素不适合作为该菌的碳源。

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。