化工时刊
化工時刊
화공시간
CHEMICAL INDUSTRY TIMES
2014年
10期
30-32
,共3页
环己酮乙二醇缩酮%活性炭%磷钨酸%催化
環己酮乙二醇縮酮%活性炭%燐鎢痠%催化
배기동을이순축동%활성탄%린오산%최화
cyclohexanone ethylene ketal%activated carbon%phosphotungstic acid%catalysis
以活性炭负载磷钨酸为催化剂,环己酮和乙二醇为原料,催化合成了环己酮乙二醇缩酮。详细探索了醛醇摩尔比、催化剂用量、带水剂用量、反应时间等因素对收率的影响。得到了活性炭负载磷钨酸催化合成环己酮乙二醇缩酮优化工艺条件：以环己酮0.1 mol为标准,酮醇物质的量比1∶1.6,带水剂环己烷用量12 mL,催化剂用量0.6 g,反应时间30 min,反应温度为回流温度,在此优化条件下,缩醛的收率为87.7%。结果表明,活性炭负载磷钨酸催化剂是合成环己酮乙二醇缩酮的良好催化剂,可重复使用。该工艺具有操作简单,反应条件温和,产品易于分离等优点。
以活性炭負載燐鎢痠為催化劑,環己酮和乙二醇為原料,催化閤成瞭環己酮乙二醇縮酮。詳細探索瞭醛醇摩爾比、催化劑用量、帶水劑用量、反應時間等因素對收率的影響。得到瞭活性炭負載燐鎢痠催化閤成環己酮乙二醇縮酮優化工藝條件：以環己酮0.1 mol為標準,酮醇物質的量比1∶1.6,帶水劑環己烷用量12 mL,催化劑用量0.6 g,反應時間30 min,反應溫度為迴流溫度,在此優化條件下,縮醛的收率為87.7%。結果錶明,活性炭負載燐鎢痠催化劑是閤成環己酮乙二醇縮酮的良好催化劑,可重複使用。該工藝具有操作簡單,反應條件溫和,產品易于分離等優點。
이활성탄부재린오산위최화제,배기동화을이순위원료,최화합성료배기동을이순축동。상세탐색료철순마이비、최화제용량、대수제용량、반응시간등인소대수솔적영향。득도료활성탄부재린오산최화합성배기동을이순축동우화공예조건：이배기동0.1 mol위표준,동순물질적량비1∶1.6,대수제배기완용량12 mL,최화제용량0.6 g,반응시간30 min,반응온도위회류온도,재차우화조건하,축철적수솔위87.7%。결과표명,활성탄부재린오산최화제시합성배기동을이순축동적량호최화제,가중복사용。해공예구유조작간단,반응조건온화,산품역우분리등우점。
Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethanediol using activated car-bon supported phosphotungstic acid as catalyst. The effects of reactant ratio, catalyst amount, the amount of water-carrying agent and reaction time on the yield were discussed detailly. The optimum conditions were determined as fol-lows:cyclohexanone 0. 1 mol as criterion, n[cyclohexanone]∶n(ethanediol) =1∶1. 6, amount of catalyst 0. 6 g, cy-clohexane water-carrying agent 12 mL, reaction time 30 min under reflux temperature. The yield of the acetal could reach 87. 7% under the optimum conditions. It proves that the activated carbon supported phosphotungstic acid is a high active catalyst for ketalization and can be reused. This technology has advantages such as simple operation, mild reaction condition and easy separating product.
