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:庞秀言[1] 孙汉文[1] 李志远[1] 张红娟[1]
机构地区:[1]河北大学化学与环境科学学院,保定071002
出 处:《应用化学》2002年第4期407-408,共2页Chinese Journal of Applied Chemistry
摘 要:Ammonium thiocyanate was prepared in 2 steps from aqueous ammonia and carbon disulfied by phase transfer catalysis in yield of 72 7%, when catalysts consisted of OP 4 and OP 21 in mole ratio of 4∶6. The effects of reaction temperature, time, mole ratio of OP 4 to OP 21 and conparison with other catalysts on the reaction were descurved.Ammonium thiocyanate was prepared in 2 steps from aqueous ammonia and carbon disulfied by phase transfer catalysis in yield of 72 7%, when catalysts consisted of OP 4 and OP 21 in mole ratio of 4∶6. The effects of reaction temperature, time, mole ratio of OP 4 to OP 21 and conparison with other catalysts on the reaction were descurved.
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:216.73.216.147