查询词典 acetic acid

N-Butyl acetate was synthesized from acetic acid and n-butanol using polyvinyl chloride-polythylene polyamine resin which adsorb s metal ions as the catalyst.

采用吸附了金属离子的聚氯乙烯—多乙烯多胺树脂为催化剂，乙酸和正丁醇为原料催化合成了乙酸正丁酯。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 molL-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mLmin-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10molL-1醋酸胺，20 molL-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mLmin-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 mol·L-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mL·min-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10mol·L-1醋酸胺，20 mol·L-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mL·min-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

Using the mixture of acetic acid and cyclohexane as solvent, the effects of factors such as amount of solvent, ozonolysis temperature, ozonolysis time, amount of reductant and reduction decomposition time on reaction results were examined.

考察了溶剂、臭氧化时间、还原剂用量、还原分解时间和还原温度对反应结果的影响，初步探讨了臭氧化反应级数。

The optimum conditions were obtained as follows : the weight ratio of fatty acids of rapeseed oil and 85%acetic acid is 1:4, ozonolysis temperature is 20-25

本文使用植物油脂肪酸为原料，原料丰富，价格低廉；使用含水溶剂不但提高了产品收率，而且降低了溶剂挥发性和溶剂的腐蚀性；使用活性炭吸附壬二酸粗品大大提高了壬二酸纯度，此方法简便易行，用此方法处理壬二酸粗品，壬二酸的纯度可达96.1%。

When the heterogeneous catalyst is used in the asymmetric catalytic hydrogenation reaction of ethyl pyruvate under the room temperature and the medium hydrogen pressure, high activity and optical selectivity more than 70 percent are obtained in acetic acid solution, and the heterogeneous catalyst can be repeatedly used for more than 15 times.

本发明提供的催化剂在室温、中等氢压力下用于丙酮酸乙酯的不对称催化氢化反应时在乙酸溶剂中可得到高活性和超过70％的光学选择性，且可以重复使用15次以上。

Based on the reactive distillation technology, the as-prepared nanostructured manganese oxides are also used to catalyze the esterification reaction between acetic acid and isoamyl alcohol to synthesize isoamyl acetate.

动力学研究表明本实验的催化氧化反应遵循动力学规律r(来源：ABC70a8论文网www.abclunwen.com)_A=333.3×c_A~(1.76)。以所制备的纳米结构锰氧化物为催化剂，采用反应蒸馏技术进行了乙酸异戊酯的合成研究。

We report here a novel method for condensation of unprotected saccharides with o-phenylenediamines using iodine in acetic acid solution to form aldo-benzimidazoles.

我们在这里描述了一个新的方法，用碘在醋酸的环境下，可以将未保护的醣用邻苯二胺修饰得到咪唑化合物。

Dilute 12 g of glacial acetic acid to 100 ml with water .

稀醋酸 取12 g的冰乙酸，加水使成100 ml。

Soluble In water and insoluble in ethanol, acetone or glacial acetic acid.

在水中易溶，在乙醇、丙酮或冰醋酸中不溶。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。