| 三聚甲醛与甲醇在SO_4~(2-)/Fe_2O_3固体超强酸上的开环缩合反应研究 |
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| 引用本文： | 赵峰,李华举,宋焕玲,夏春谷.三聚甲醛与甲醇在SO_4~(2-)/Fe_2O_3固体超强酸上的开环缩合反应研究[J].天然气化工,2013(1):1-6. |
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| 作者姓名： | 赵峰 李华举 宋焕玲 夏春谷 |
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| 作者单位： | 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室;中国科学院大学;中国科学院苏州纳米技术与纳米仿生研究所 |
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| 基金项目： | 国家重点基础研究发展计划(973,2011CB201404) |
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| 摘 要： | 对SO42-/Fe2O3固体超强酸上三聚甲醛与甲醇开环缩合反应制备聚甲醛二甲基醚(DMMn)的反应条件进行了研究。其中,醇醛比、反应温度和反应时间对产物分布的影响较大。当甲醇与三聚甲醛的物质的量比(即醇醛比)为1.2、反应温度130℃、反应时间2h、反应压力0.1MPa、催化剂用量为总反应物质量的1.5%时,柴油添加组分DMM3-8收率可达22%,同时,SO42-/Fe2O3具有较好的循环使用性能。并运用XRD、SEM、NH3-TPD、IR等表征手段对反应前后催化剂进行了分析。
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| 关 键 词： | 固体超强酸 聚甲醛二甲基醚 开环缩合 三聚甲醛 甲醇 燃料添加剂 |
Ring-opening and condensation of trioxane with methanol over SO42-/Fe2O3 solid superacid |
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| ZHAO Feng,LI Hua-jü,SONG Huan-ling,XIA Chun-gu.Ring-opening and condensation of trioxane with methanol over SO42-/Fe2O3 solid superacid[J].Natural Gas Chemical Industry,2013(1):1-6. |
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| Authors: | ZHAO Feng LI Hua-jü SONG Huan-ling XIA Chun-gu |
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| Affiliation: | 1(1.State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;2.University of Chinese Academy of Sciences,Beijing 100049,China;3.Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China) |
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| Abstract: | The ring-opening and condensation of trioxane with methanol over the SO42-/Fe2O3 solid superacid to synthesize polyoxymethylene dimethyl ethers(DMMn) were studied.The influences of the mole ratio of methanol to trioxane,temperature,pressure and reaction time on the catalytic performance of the catalysts were investigated.The results showed that under the optimum reaction conditions of methanol/trioxane mole ratio of 1.2,130℃,2h,0.1MPa and catalyst mass fraction of 1.5%,the yield of DMM3-8,which are the ideal additives for diesel fuel,could reach to 22%,and the catalyst had good reuse performance.XRD,SEM,NH3-TPD and FT-IR were used for the charecterization of the catalysts before and after reaction. |
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| Keywords: | solid superacid polyoxymethylene dimethyl ethers ring-opening condensation trioxane methanol fuel additive |
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