转化率

Its catalytic performance for Heck arylation of acylic acid with iodobenzene shows that the catalyst has catalytic activity and regioselectivity for the synthesis of trans-phenylacrylic acid.

结果表明该催化剂具有较高的催化活性和立体选择性，可高转化率、高产率地合成反式苯丙烯酸；通过简单的过滤、溶剂洗涤回收催化剂，并能多次重复使用。

The results indicate that little conversion of iodobenzene was observed on unmodified carrier supported catalysts; and a conversion of 100% and a selectivity of above 98% to trans-isomers were found over 10%Cu/5%KF/ZnO, 20%Cu/10%KF/ZnO.

结果表明，对碘苯与丙烯酸正丁酯的Heck反应的催化性能，未改性催化剂基本没有活性，而改性后，10%Cu/5%KF/ZnO、20%Cu/10%KF/ZnO催化剂的催化转化率为100%和反式异构体的选择性为98%以上。

The catalyst has high catalytic activity and excellent stability, both the conversion rate of TAME and the selectivity of isoamylene can be over 99%.

该催化剂具有良好的活性和稳定性，TAME转化率和异戊烯的选择性均超过99%。

ResultsThe optimum synthetic conditions were 2 g cinnamic acid,microwave power was 600 W,reaction temperature was 115℃,reaction time was 14 min,mass percent of macroporous resin was 30%,the molar ratio of cinnamic acid to isobutyl alcohol was 1:7, and the yield of the new process was 89.3%.

结果肉桂酸2 g，酸醇摩尔比1∶7，催化剂用量30%，微波功率600 W，微波温度115℃，微波时间14 min，转化率达89.3%。

In this work, isobutyl isobutyrate was prepared by the condensation of two molecular isobutyraldehyde in the presence of aluminium isobutoxide catalyst system.

依据间歇反应所得一系列数据，确定了异丁醛连续缩合反应工艺流程；考察了以异丁醛为原料，在 5～10℃，停留时间 1 5～ 2h ，在异丁氧基铝催化体系作用下，两分子异丁醛缩合成一分子异丁酸异丁酯；脱除催化剂后，粗产品精制得到纯度≥ 99 5 %的异丁酸异丁酯，异丁醛的转化率≥ 98 5 %，异丁酸异丁酯的选择性≥95 %。

The conversion of isobutyraldehyde and the selectivity to 2,4,6-triisopropyl-1,3,5-trioxane were 91.1% and 99.8% respectively under optimum reaction condition isobutyraldehyde 25.0 g, [Et3NH]Cl/FeCl3 ( x (FeCl3)＝0.62 1.0 g, 25 ℃ for 1 h .

在最佳的反应条件下（异丁醛25.0 g， [Et3NH]Cl/FeCl3 x (FeCl3=0.62 1.0 g， 25 °C，N2保护下反应1 h，异丁醛的转化率为91.1%，对2，4，6-三异丙基-1，3，5-三氧噁烷的选择性达99.8%。

The effect of reaction, mixing and temperature on reaction rate in the space of instantaneous reaction rate -unreacted main reactant was studied using retention time as an objective, and a new strategy for the synthesis of reactor networks was presented under steady state, isochoric and non-isothermal anditions.

本研究以反应器系统为对象，以停留时间为目标，针对稳态、恒容、非等温条件下的化学反应过程，在瞬时反应速率 r和关键反应物的未转化率x空间探讨了反应、混合、温度对反应速率的影响，提出了在r x空间非等温反应器网络综合的新策略。

In the first route, the isomerization process of α-isophorone into a β-isophorone requires high temperatures, and only about 4% of the conversion was obtained for the conjugate effect of α-isophorone.

在第一条路线中由于α-异佛尔酮的共轭效应，使得α-异佛尔酮异构化为β-异佛尔酮的过程中需要很高的温度，且仅有4%左右的转化率。

Under this conditions,the conversion rate of isovaleric acid was up to 96.9%.

此条件下异戊酸转化率达96.9%。

The results show that solid superacid catalysts have higher activities,reaction time being short,higher conversion rate of isovaleric acid.

结果表明：此法催化剂用量少、催化活性高、反应时间较短、异戊酸转化率高、工艺简单、在一定条件下催化剂可以重复使用多次。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！