C催化1,4-丁二醇环化脱水制备四氢呋喃.pdfVIP

学兔兔 化 工 进 展 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 2012年第3 1卷第5期 H9P2W15V3／C催化1,4．丁二醇环化脱水制备四氢呋喃 曹小华，严 平，谢宝华，徐常龙，邱丽霞 (九江学院化学与环境工程学院，江西 九江332005) 摘 要：以活性炭为载体，通过浸渍法制备了H9P2W15VdC催化剂，对催化剂进行FT-IR表征 以催化 1,4．丁二 醇脱水制备四氢呋喃为探针反应，考察催化剂的酸催化性能。通过正交实验得出了最佳条件反应：w(催化剂) = 3．93％(相对1,4丁二醇质量)，反应温度为185～190℃，反应时间为40 min，四氢呋喃平均收率达93．30％， 催化剂重复使用3次，产率仍可达90．94％。本工艺具有绿色、安全、操作简单、收率高等优点。 关键词：H9P2Wl5V3／C；1,4-丁二醇；四氢呋喃 中图分类号：TQ426．6 文献标志码：A 文章编号：1000—6613(2012)05一l126—04 Dehydration of 1,4一butanediol to tetrahydrofuran catalyzed by H9PxW15V3／C CA0Xiaohua，YANPing，XIEBaohua，XUChanglong，QIULixia (College ofChemistry and Environmental Engineering，Jiujiang University，Jiujiang 332005，Jiangxi，China) Abstract：Tungstovanadophosphoric heteropoly acid with tri--vanadium·-substituted Dawson structure supported by activated carbon was prepared by impregnation method and characterized by IR．Its catalytic performance was studied in the catalytic synthesis of tetrahydrofuran from 1．4一butanedio1．The optimal reaction condition was obtained by orthogonal experiments as mass ratio of 1．4一butanediol to catalyst 100：3．93，reaction temperature 1 85— 19O℃ and reaction time 40 min，under which，the yield of tetrahydrofuran reached 93-3O％．The catalyst could be reused for 3 times and the yield was still above 90．94％．This approach provides a green，safe，operation simple and highly active dehydration process to produce THF． Key words：HgP2W15V3／C；1,4-butanediol；tetrahydrofuran 四氢呋喃 (THF)由于具有低毒、低沸点、 Dawson型杂多酸是一类性能优异的绿色催