转化率

The influences of polymerization conditions such as the dosage of cyanobenzene, catalyst, co-catalyst and polymerization temperature on the polymerization (gelation time and monomer conversion) and the swelling value of PDCPD were investigated.

考察了主要反应条件如苯甲腈的用量、聚合反应温度、主催化剂的用量和助催化剂的用量等对聚合反应速率、聚合反应转化率和PDCPD膨胀值的影响，并得到了最优的聚合反应条件：苯甲腈与WCl_6的摩尔比为3，聚合反应温度为70℃，DCPD与WCl_6的摩尔比为1500，Et_2AlCl与WCl_6的摩尔比为11。

The results of cyclohexene oxidation catalyzed by V-MCM-41 indicated that its catalytic activity de...

最佳反应结果表明，环己烯的单程转化率和H2O2有效利用率可分别达到23.91%和95.4%。

Under the optimized conditions the conversion of cyclohexene and the selectivity of epoxycyclohexane could reach up to 91.4% and 86.3%, respectively.

在此条件下环己烯的转化率可达91.4%，环氧环己烷的选择性达86.3%。

The results showed: at the reaction temperature of 25～30 ℃,hydrogen pressure of 1.0～1.5 MPa,Vethanol∶Vcyclopentadiene of 5～6∶1,the catalyst dosage of 4 %～5 % and stirring rate of 800 r/min.The conversion of cyclopentadiene was above 98% and the selec...

结果表明，在反应温度25-30℃，氢气分压为1.0-1.5 MPa，无水乙醇作为溶剂，V无水乙醇∶V环戊二烯为5-6∶1，催化剂用量为4%-5%，搅拌速度为800 r/min条件下，反应时间2~3 h，环戊二烯的转化率大于98%，环戊烯的选择性大于95%。

Under the optimized reaction conditions: n (H2O2)/n/n=2/0.04/1,V/V=8.75, reaction temperature 35℃, and reaction time 28 h, the highest yield of glutaraldehyde could reached 78% with a cyclopentene conversion of 99.99%.

在最佳工艺条件：n(H2O2)：n：n=2：0.04：1，V/V=8.75，反应温度35℃，反应时间28h下，环戊烯转化率达99.99%，戊二醛的收率最高可达78%。

Firstly, dicyclopentyldichlorosilane, a reaction intermediate, was prepared under the optimal conditions of a reaction pressure range of 1.0-1.2 MPa, a n/n of 1.16, a reaction temperature range of 85-95℃, a catalyst dosage of 1.2 g, an isooctyl alcohol dosage of 2.3 g and a reaction time range of 6-7 h. The conversion of cyclopentene and the yield of DCPDCS were 96.2% and 88.9%, respectively.

首先研究了合成DCPDCS的最佳工艺条件：反应压力1.0~1.2 MPa，n/n= 1.16/1.00，反应温度85~95 C，催化剂用量1.2 g，异辛醇用量2.3 g，反应时间6~7 h，环戊烯转化率可达96%以上，DCPDCS收率可达88%以上。

Accordingly with the ZSM-5 zeolite the turning point happened at the conversion of about 55%,the respective contributions were about 20% and 80%, and dealkylation of about 10% of alkylbenzene present in the feed was helpful to form benzene.

在ZSM-5分子筛催化剂上，从芳烃迁移反应向芳烃生成反应的过渡大约发生在转化率55%附近，芳烃迁移和芳烃生成反应对苯生成的贡献分别约为20%和80%，原料中约10%的烷基苯会发生脱烷基反应生成苯。

With the Y zeolite the turning point from aromatics shift to aromatics generation happened at the conversion of about 30%.The respective contributions to benzene formation from aromatics shift and aromatics generation were about 36% and 64%, and the dealkylation of about 5% of alkylbenzene present in the feed was also helpful to form benzene.

在Y分子筛催化剂上，从芳烃迁移反应向芳烃生成反应的过渡大约发生在转化率30%附近，芳烃迁移和芳烃生成反应对苯生成的贡献分别约为36%和64%，原料中约5%的烷基苯会发生脱烷基反应生成苯。

After analyzing the reaction mechanism through literature, we think the reaction from diethanolamine to iminodiatic salt is composed of two steps—reaction from alcohol to aldehyde and the disproportionation reaction of the aldehyde. The selectivity, conversion, rate of this reaction are mainly attributed to the capability of this catalyst.

通过查阅文献资料，分析了反应机理，认为二乙醇胺脱氢生成酸是由两步反应组成─醇脱氢生成醛与醛的歧化，催化剂的性能是影响反应转化率、选择性及反应速度的主要因素，确定了采用沉淀法制备Cu/ZrO2做催化剂。

When diethyl carbonate was used as transesterification reagent,the convertion of phenol and the yield of DPC had improved,but the extant was small.

以碳酸二乙酯为酯交换试剂，苯酚的转化率和DPC的产率都有所提高，但提高的幅度不大。

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！