合成呋喃酚中主要副产物的分离与结构鉴定

为了探索和确证邻苯二酚路线合成呋喃酚的反应过程.分离了合成呋喃酚中的主要杂质,通过1H NMR和LC-MS确定其结构为4-(2-甲基烯丙基)-1,2-苯二酚.推出了该反应可能的机理.采用异戊醇铝催化合成呋喃酚,收率达到79.88%,高于工业化装置的收率78.30%.     

萃取精馏分离呋喃酚中邻苯二酚

In this study,extractive distillation has been applied to separate catechol(CAT) from carbofuran phenol(CFP) with high purity and yield.The relative volatility of CFP to CAT was measured,and the choice of separating agents was investigated.The experimental results indicated that CFP/CAT is an azeotropic system with an azeotropic point at 93.40℃/0.400 kPa and an azeotropic mixture containing 49.96% of CFP and 50.04% of CAT.Data from the determination of the relative volatility have shown that separating agents such as diglycol and 4-butylcatechol(4-TBC) are able to increase the relative volatility up to 1.90.In one shot process batch extractive distillation of CFP mixture with 3%(by mass) diglycol as separating agent,the purity and yield of the obtained CFP was 99.0% and 95.0%,respectively,while the distillation without separating agent provided a purity and yield of only 98.0% and 90.0%,respectively.There was no residual separating agent found in the product.     

激光清洗技术在核生化洗消领域的应用

核生化洗消是核生化防护保障重要环节之一,激光清洗技术具有洗消效率高、保障要求低、无洗消剂污染等独特优势,可避免水+洗消剂等其他传统洗消方式存在的后勤负担大、腐蚀设备、使用环境受限等不足,是核生化洗消的一个新的研究领域.简述了激光清洗技术的发展历程、研究进展,重点综述激光清洗技术在放射性粉尘、化学、生物等有毒有害物质洗消...     

OBE理念在《发电厂电气部分》课堂教学的应用

<正>针对《发电厂电气部分》课程传统教学中存在的问题,将工程认证中的OBE理念引入课堂教学,探索并创新构建了该课程的教学改革体系,实现教学效果的持续跟进,以满足工程教育背景下应用型人才培养质量的要求。基于成果导向OBE教育理念,强调“以学生为中心”,同时注重持续改进,是工程教育背景下应用型人才培养的重要理念。《发电厂电气部分》作为能源与动力工程专业重要的专业基础课,具有很强的理论性、