摘要
以乙醇为溶剂,铜锂复合金属离子为催化剂,用氧气直接催化氧化苯酚合成对苯醌。考察了催化剂配比、催化剂与苯酚质量比、反应压力、反应温度和反应时间对苯酚催化氧化反应的影响。确定了苯酚催化氧化制备对苯醌的最优工艺条件为:n(Cu^(2+)):n(Li^+)=1:3,m(催化剂):m(苯酚)=1:2,温度80℃,压力2.7 MPa,反应时间3 h。在此反应条件下,苯酚转化率达85.50%,对苯醌选择性可达83.15%。
The direct oxidation of phenol to benzoquinone by oxygen in ethanol solution was studied with Cu^2＋/Li^＋ complex metal ions as catalysts. The optimum reaction conditions were obtained as follows： Cu^2＋ to Li^＋ molar ratio 1 ： 3, mass ratio of catalyst to phenol 1 ： 2, reaction temperature 80 ℃, reaction pressure 2.7 MPa and reaction time 3 h. Under these conditions, 85.50% conversion of phenol and 83.15% selectivity of benzoquinone were obtained.
出处
《精细石油化工》
CAS
CSCD
北大核心
2008年第3期55-58,共4页
Speciality Petrochemicals
关键词
苯酚
对苯醌
催化氧化
铜锂复合金属离子
选择性
phenol
benzoquinone
catalytic oxidation
Cu^2＋/Li^＋ complex metal ions
selectivity
