摘要
以回收灯用钨丝为催化剂前驱物,30%H2O2为氧源,催化氧化环己酮合成了己二酸,反应体系中无须使用有机溶剂、酸性助剂和相转移剂。IR和TG分析表明,钨丝与H2O2反应生成的新生态过氧钨酸是催化活性成分,合成己二酸后转化为钨酸。钨丝为催化剂前驱物合成己二酸适宜反应条件为:100mmol环己酮,50mL30%H2O2,钨丝的摩尔用量为环己酮摩尔数的1.5%,回流反应6h,己二酸收率63.7%。比相同反应条件下用钨酸和WO3为催化剂的收率高10%～18%。
Using recycled lamp tungsten filament as the precursor of catalyst,adipic acid was synthesized from the oxidation of cyclohexanone by 30% H2O2 without the presence of any organic solvent,acidic additives and phase transfer agents.The IR and TG results indicate that nascent peroxotungstic acid is the active catalytic component obtained from the oxidation of recycled lamp tungsten filament by H2O2.It converts to tungstic acid finally.After 6h refluxing,a 63.7% yield of adipic acid could be attained using the above catalyst in optimized reaction system consisting of 100 mmol of cyclohexanone in 50 mL 30% H2O2,and with 1.5% molar fraction of catalyst in cyclohexanone.Under identical conditions the yield is 10% ～ 18% higher than those from using tungstic acid or WO3 as the catalyst.
出处
《应用化学》
CAS
CSCD
北大核心
2010年第11期1282-1285,共4页
Chinese Journal of Applied Chemistry
基金
河南省教育厅(2008A150002)
河南省科技厅(092102210171)资助项目
关键词
回收灯用钨丝
新生态过氧钨酸
催化氧化
己二酸
环己酮
recycled lamp tungsten filament
nascent peroxotungstic acid
catalytic oxidation
adipic acid
cyclohexanone
