查询词典 isoamyl

Through the experiments and result analysis,this paper discusses the factors influencing the catalytic synthesis of isoamyl acetate with the crystal aluminum chloride as the catalyst.

通过实验及结果分析，讨论了影响结晶三氯化铝催化合成乙酸异戊酯反应的因素。

Based on the principle of virtual binary systems, the correlation value is satisfactorily consistent with the ex-perimental data (average deviation for isoamyl alcohol and active amyl alcohol is within 1%).

结果表明，计算值能较好地与实验值相吻合（对于旋性戊醇和异戊醇，其平均偏差均在1%以内）。

It was observed after 24hrs of reaction that this lipase could compete very well with lipase from Candida antartica (93. 0％ for isoamyl butyrate synthesis and 95. 0％ for ethyl caproate synthesis) and lipase from Mucor miehei (75. 0％ for isoamyl butyrate synthesis and 93. 64％ for ethyl caproate synthesis).

反应24h后，来自Candida antartica脂肪酶合成丁酸异戊酯和己酸乙酯的转化率分别为93.0％和95.0％，来自Mucor miehei脂肪酶合成丁酸异戊酯和己酸乙酯的转化率分别为75.0％和93.64％。

Isoamyl chloroacetate is synthesized from chloroacetic acid and isoamyl alcohol with mordenite as catalyst and benzene as water carrying agent under the irradiation of microwave.

研究了微波辐射作用下丝光沸石催化氯乙酸与异戊醇的酯化反应。

The orthogonal experimental result showed that the optimum reaction conditions were as follows: citric acid 7.7 g, isoamyl alcohol 21.7 mL(the molar ratio of citric acid to isoamyl alcohol, 1:5); 1.0 g (4% of the total weight of raw material) NaHSO4H2O as catalyst; 25 mL dimethyl benzene as deaquation reagent; microwave irradiation time 15 mm; the yield of product was 83.2%(the rate of esterification was 95.1%).

通过正交实验，得到最佳的工艺条件如下：柠檬酸7.7g，异戊醇21.7mL（酸醇摩尔比为1：5）；一水合硫酸氢钠作催化剂，用量为1.0 g（为原料总质量的4%）；带水剂为二甲苯，用量为25mL；微波辐射时间为15min。

Isoamyl isovalerate was synthesized through esterification reaction by using isovaleric acid and isoamyl alcohol as raw materials and nano-H4SiW12O40/SiO2 as catalyst, the influencing factors in the reaction were studied, and the results showed that the esterification rate could reach 98.6 % under the conditions of the ratio of alcohol-acid 1.4∶1, the use level of catalyst 5 %, and the reaction time 1.5 h.

以纳米复合钨硅杂多酸为催化剂，异戊酸和异戊醇为原料，通过酯化反应合成苹果油，对酯化反应的影响因素进行了研究，结果表明，在醇酸物质的量比为1.4∶1，催化剂用量5%，反应时间1.5h的条件下，酯化率可达98.6%。

Esterification of acetic acid with isoamyl alcohol catalyzed by ferric chloride was studied,and effect of different factors such as reaction time,dosage of catalyst and ratio of acetic acid to isoamyl alcohol on the yield of isoamyl acetate was carefully examined.

研究了以三氯化铁为催化剂乙酸与异戊醇的酯化反应，考察了反应时间、催化剂用量、醇酸摩尔比等因素对乙酸异戊酯收率的影响。

When material ratio of isoamyl alcohol to glacial acetic is 0.6:1; amount of catalyst is 2.3%~3.4% of isoamyl alcohol; reaction time is 3h; yield of isoamyl acetate is 88%; the ester purity of product is 99.5%.

实验表明，该催化剂有很好的催化活性，当醇酸物质的量之比为0.6：1，反应3h，催化剂用量为醇质量的2.3%~3.4%时，酯化收率可达88%，产品纯度达99.5%。

There were 2 types of tasks in the experiment. In one task, only isoamyl acetate was used as odorant. In the other task, to avoid possible decreased olfactory attention, vanillin was given before each presentation of isoamyl acetate.

采用事件相关设计，每名受试者完成两段嗅觉刺激任务，一个是单一醋酸异戊酯刺激，另一个在醋酸异戊酯刺激前给予香草醛，采用fMRI分析嗅觉皮层的活动。

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。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。