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:《精细石油化工》2002年第1期34-36,共3页Speciality Petrochemicals
摘 要:以交联的聚芳醚酮酮和发烟硫酸 (含 SO3 2 0 % )合成了磺化聚芳醚酮酮树脂 ,并用于催化富马酸和甲醇的酯化反应。最佳条件为 :富马酸 1 1 .6 g、甲醇 4 0 m L、催化剂 3.0 g,反应温度 85~ 95℃ ,反应时间 5 h,酯化率达 89.3%。The sulfonated polyaryletherketoneketone(S PEKK) was synthesized from cross linked polyaryletherketoneketone with 20% fuming sulfuric acid, and then it was used as catalyst in esterification of fumaric acid and methyl alcohol. The optimum reaction conditions were obtained as follows: fumaric acid 11.6 g, methyl alcohol 40 mL, S PEKK 3.0 g, reaction temperature 8595 ℃, reaction time 5 h. The esterification yields reached 89.3% and the catalyst could be recovered easily and be reusable.
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:216.73.216.222