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
出 处:《辽宁化工》1999年第1期34-35,38,共3页Liaoning Chemical Industry
摘 要:首次以杂多酸为催化剂采用酯化法合成丙二醇单乙醚乙酸酯。对合成丙二醇单乙醚乙酸酯的工艺条件进行了讨论。实验结果表明,以杂多酸为催化剂产率可达90%以上,选择性可达99%,其催化效果要强于浓硫酸催化剂。Propylene glycol monoether acetate was synthesized using heteropoly acid as catalyst for the firsttime. We discussed the technological conditions of synthesizing propylene glycol monoether acetate. The results indicated that the yield was over 90% and the selectivity was 99% when the heteropoly acid was used as catalyst. The catalytic effect of heteropoly acid was superior to concentrated sulphuric acid.
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:216.73.216.127