平顶山学院学报
平頂山學院學報
평정산학원학보
JOURNAL OF PINGDINGSHAN UNIVERSITY
2012年
2期
51-52,64
,共3页
新型Lewis酸铁钾矾%己酸乙酯%催化合成%绿色催化剂
新型Lewis痠鐵鉀礬%己痠乙酯%催化閤成%綠色催化劑
신형Lewis산철갑반%기산을지%최화합성%록색최화제
new Lewis acid ferric potassium alum%ethyl caproate%catalytic synthesis%green catalyst
新型Lewis酸铁钾矾催化己酸和乙醇合成反应生成己酸乙酯,其性能优于硫酸,并且是一种绿色催化剂.研究了催化剂的用量、酸醇摩尔比、反应时间对酯化反应的影响.实验结果表明,较佳的反应条件为：催化剂用量1.0 g/0.05 mol己酸,酸醇物质的量比为1∶2.4,反应时间为100 min,此条件下己酸转化率为94.3%.
新型Lewis痠鐵鉀礬催化己痠和乙醇閤成反應生成己痠乙酯,其性能優于硫痠,併且是一種綠色催化劑.研究瞭催化劑的用量、痠醇摩爾比、反應時間對酯化反應的影響.實驗結果錶明,較佳的反應條件為：催化劑用量1.0 g/0.05 mol己痠,痠醇物質的量比為1∶2.4,反應時間為100 min,此條件下己痠轉化率為94.3%.
신형Lewis산철갑반최화기산화을순합성반응생성기산을지,기성능우우류산,병차시일충록색최화제.연구료최화제적용량、산순마이비、반응시간대지화반응적영향.실험결과표명,교가적반응조건위：최화제용량1.0 g/0.05 mol기산,산순물질적량비위1∶2.4,반응시간위100 min,차조건하기산전화솔위94.3%.
Ethyl caproate was synthesized from hexanoic acid and ethyl alcohol with new Lewis acid ferric potassium alum as catalyst.The factors of influencing esterification rate were investigated.The results showed that ferric potassium alum was a good green catalyst for synthesis of ethyl caproate.The optimum conditions were：molar ratio of hexanoic acid to ethyl alcohol was 1∶ 2.4,amount of catalyst was 1.0 g /0.05 mol hexanoic acid,the water-carrying toluene was 10 mL,and the reaction time was 100 min.The highest esterification rate was 94.3%,and the catalyst can be recycled for many times.
