精细石油化工进展
精細石油化工進展
정세석유화공진전
ADVANCES IN FINE PETROCHEMICALS
2001年
1期
4-6
,共3页
戊二酸二正戊酯%合成%酯化%硅钨杂多酸%催化剂
戊二痠二正戊酯%閤成%酯化%硅鎢雜多痠%催化劑
무이산이정무지%합성%지화%규오잡다산%최화제
以正戊醇和从二羧酸中分离出的戊二酸酐为原料，以硅钨杂多酸为催化剂进行酯化反应，合成戊二酸二正戊酯。考察醇酐比、反应温度、反应时间、催化剂用量、带水剂对酯化反应的影响，确定合成戊二酸二正戊酯的工艺条件：醇酐摩尔比2.5∶1、反应温度140 ℃、反应时间90 min、催化剂用量为体系总量的0.22%、甲苯10 mL，酯化率达96％。
以正戊醇和從二羧痠中分離齣的戊二痠酐為原料，以硅鎢雜多痠為催化劑進行酯化反應，閤成戊二痠二正戊酯。攷察醇酐比、反應溫度、反應時間、催化劑用量、帶水劑對酯化反應的影響，確定閤成戊二痠二正戊酯的工藝條件：醇酐摩爾比2.5∶1、反應溫度140 ℃、反應時間90 min、催化劑用量為體繫總量的0.22%、甲苯10 mL，酯化率達96％。
이정무순화종이최산중분리출적무이산항위원료，이규오잡다산위최화제진행지화반응，합성무이산이정무지。고찰순항비、반응온도、반응시간、최화제용량、대수제대지화반응적영향，학정합성무이산이정무지적공예조건：순항마이비2.5∶1、반응온도140 ℃、반응시간90 min、최화제용량위체계총량적0.22%、갑분10 mL，지화솔체96％。
The diamyl glutarate was synthesized by esterification of n-amyl alcohol and glutaric anhydride separated from dicarboxylic acid by catalysis of silicotungstic acid. The effects of molar ratio of alcohol/anhydride, the reaction temperature，the reaction time and the amount of the catalyst used were investigated. The conditions of synthesis were determined as follows: molar ratio of alcohol/anhydride 2.5∶1, reaction temperature 140 ℃，reaction time 90 min, catalyst amount 0.22% (based on the total mass of reaction system), toluene 10 mL. The esterification rate of the above reaction was up to 96％.
