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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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酸功能化离子液体催化合成聚缩醛二甲醚
, PP. 501-506
Keywords: 离子液体,三聚甲醛,甲醇,聚缩醛二甲醚
Abstract:
？对以酸功能化离子液体[hnmp]hso4、[hnmp]h2po4、[hnmp]ptsa和[pyn（ch2）3so3h]hso4催化三聚甲醛和甲醇缩合制备聚缩醛二甲醚（poden，n>1）的反应进行了研究，考察了催化剂用量、物料配比、温度和时间等对反应活性的影响。结果表明，离子液体的催化活性与其酸性相关。[pyn（ch2）3so3h]hso4具有较高的催化活性；当[hnmp]hso4的用量为2.0%、甲醇和三聚甲醛的物质的量比为2.0、反应温度110℃、反应压力2.0mpa、反应时间6h时，三聚甲醛的转化率和pode3~8的选择性分别为97.69%和32.54%。反应结束后，[pyn（ch2）3so3h]hso4与产物可自动分成两相。
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