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:毛海舫[1] 王立志[1] 赵飞飞[1] 吴建新[1] 阮礼波[1]
机构地区:[1]上海应用技术学院化学与环境工程学院,上海200235
出 处:《香料香精化妆品》2015年第5期8-10,16,共4页Flavour Fragrance Cosmetics
摘 要:报道了一种由丁香酚催化合成香兰素的方法,即丁香酚在强碱性环境下转化为异丁香酚,然后以钴和镍盐为催化剂,氧气为氧化剂进行催化氧化获得香兰素。主要考察了反应温度、NaO H用量和氧气压力对异丁香酚氧化反应的影响。在最佳反应条件下,异丁香酚的转化率达到100%,香兰素的收率达到53%。该法绿色、环保、操作简单,具有一定的潜在工业实用价值。A method for synthesis of vanillin from eugenol by catalytic oxidation was reported. The process included two steps, i.e. the isomerization of eugenol in the action of strong bases and the subsequent catalytic oxidation of isoeugenol to wmillin using cobalt salt and nickel salt as the catalysts, molecular oxygen as the oxidant. The influences of main reaction factors such as temperature, the amount of NaOH and oxygen pressure on the effect of isoeugenol oxidation were investigated. Under the optimal condition, the conversion of isoeugenol and yield of vanillin were 100% and 53% respectively. This synthetic method provided a potentially green eco-friendly easy-to-use alternative for manufacturing vanillin efficiently in industrial scale.
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:3.23.92.150