检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:龚旌[1]
机构地区:[1]闽江学院化学与化学工程系,福建福州350108
出 处:《广州化学》2009年第4期7-12,共6页Guangzhou Chemistry
基 金:福建省科技创新资金项目(2007C0006)
摘 要:在无溶剂条件下制备环氧蓖麻油,对参加环氧化反应的有机酸和催化剂进行选择,研究了反应时间和反应温度对产物环氧值的影响。通过正交实验对环氧化合成条件进行优化,结果表明,蓖麻油/乙酸/双氧水/磷酸(质量比)=1∶0.15∶0.8∶0.01,反应温度50℃,反应时间3 h,所得产品环氧值达6.95%,采用FT-IR和1H NMR方法对产品进行了表征。整个过程操作简单,反应时间短,反应条件温和。Epoxidized castor oil was prepared without solvent, the type of organic acid and catalyst which took part in the epoxidisation process were choosed, reaction time and reaction temperature that had influence on the epoxy value of product were studied. The optimum epoxidisation process was optimized by orthogonal experiment, the results indicated: m(castor oil) : m(acetic acid) : m(hydrogen peroxide) : m(orthophosphoric acid)= 1 : 0.15 : 0.8 : 0.01, reaction temperature was 50℃, reaction time was 3 h, the epoxy value of the final product under these conditions was 6.95%, FT-IR and IH NMR were employed to characterize the production. Relatively fewer steps, shorter reaction time and much milden reaction conditions were the main advantages of this process.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.33