本文是合成吡啶盐酸氯铝酸盐离子液体(PyHCl-xAlCl3)及氯化氢改性的氯铝酸盐离子液体,利用吡啶吸附红外和紫外对其酸性进行了表征，并将其用于催化2-甲基萘(2-MN)与均四甲苯转移烷基化合成2,6-二甲基萘(2,6-DMN)的反应。
以氯铝酸盐及氯化氢改性氯铝酸盐离子液体为催化剂，考察了离子液体的酸性、 2-甲基萘与1-甲基萘不同比率、离子液体的HCl改性等因素对2-MN通过转移烷基化反应合成2,6-二甲基萘的影响，并对反应条件进行了优化。在最佳反应条件下（反应温度为35℃，反应时间为2h,2-MN和均四甲苯摩尔比为1:1），经过HCl改性后的离子液体PyHCl-AlCl3-HCl由于加快了选择性地生成2,6-DMN的反应速度，反应2h，2,6-DMN的选择性为100%的情况下，2-MN的转化率为15.8%。
This paper is a synthetic pyridine hydrochloric acid chloride aluminum acid salt ionic liquids (PyHCl - xAlCl3) HCL modification of chlorine aluminates salt ionic liquids, using infrared and ultraviolet absorption of pyridine characterized the acidic, and has been used in catalytic 2 - methyl naphthalene (2 - MN) and durene transfer alkyl dissatisfied utilization two methyl naphthalene (utilization DMN) reaction.
With chlorine aluminum acid salt and hydrogen chloride aluminum acid salt modification of ionic liquids as catalyst, inspected the ionic liquid acid, 2 - methyl naphthalene and 1 - methyl naphthalene different ratio, the modification of ionic liquids such factors HCl in 2 - MN through transfer alkylated reaction synthesis utilization, the influence of two methyl naphthalene to optimize the reaction conditions. Under the optimum reaction conditions (for 35 ℃, reaction temperature, reaction time for 2h 2 - MN and durene mole ratio of 1:1), after the modification of HCl in ionic liquids PyHCl - after AlCl3 - due to accelerate the selectively HCl in generating utilization of DMN reaction speed, reaction 2h, utilization of the selectivity is 100% DMN circumstance, 2 - MN conversion of 15.8 percent.
With chlorine aluminum acid salt and hydrogen chloride aluminum acid salt modification of ionic liquids as catalyst, inspected the ionic liquid acid, 2 - methyl naphthalene and 1 - methyl naphthalene different ratio, the modification of ionic liquids such factors HCl in 2 - MN through transfer alkylated reaction synthesis utilization, the influence of two methyl naphthalene to optimize the reaction conditions. Under the optimum reaction conditions (for 35 ℃, reaction temperature, reaction time for 2h 2 - MN and durene mole ratio of 1:1), after the modification of HCl in ionic liquids PyHCl - after AlCl3 - due to accelerate the selectively HCl in generating utilization of DMN reaction speed, reaction 2h, utilization of the selectivity is 100% DMN circumstance, 2 - MN conversion of 15.8 percent.
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第1个回答 2011-05-14
Synthetic pyridine hydrochloric acid chloride aluminum acid salt ionic liquids (PyHCl - xAlCl3) HCL modification of chlorine aluminates salt ionic liquids, using infrared and ultraviolet absorption of pyridine characterized the acidic, and has been used in catalytic 2 - methyl naphthalene (2 - MN) and durene transfer alkyl dissatisfied utilization two methyl naphthalene (utilization DMN) reaction.
With chlorine aluminum acid salt and hydrogen chloride aluminum acid salt modification of ionic liquids as catalyst, inspected the ionic liquid acid, 2 - methyl naphthalene and 1 - methyl naphthalene different ratio, the modification of ionic liquids such factors HCl in 2 - MN through transfer alkylated reaction synthesis utilization, the influence of two methyl naphthalene to optimize the reaction conditions. Under the optimum reaction conditions (for 35 ℃, reaction temperature, reaction time for 2h 2 - MN and durene mole ratio of 1:1), after the modification of HCl in ionic liquids PyHCl - after AlCl3 - due to accelerate the selectively HCl in generating utilization of DMN reaction speed, reaction 2h, utilization of the selectivity is 100% DMN circumstance, 2 - MN conversion of 15.8 percent.
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With chlorine aluminum acid salt and hydrogen chloride aluminum acid salt modification of ionic liquids as catalyst, inspected the ionic liquid acid, 2 - methyl naphthalene and 1 - methyl naphthalene different ratio, the modification of ionic liquids such factors HCl in 2 - MN through transfer alkylated reaction synthesis utilization, the influence of two methyl naphthalene to optimize the reaction conditions. Under the optimum reaction conditions (for 35 ℃, reaction temperature, reaction time for 2h 2 - MN and durene mole ratio of 1:1), after the modification of HCl in ionic liquids PyHCl - after AlCl3 - due to accelerate the selectively HCl in generating utilization of DMN reaction speed, reaction 2h, utilization of the selectivity is 100% DMN circumstance, 2 - MN conversion of 15.8 percent.
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第2个回答 2011-05-14
二乙基胺硫酸-三氯化铝室温离子液体作为Lewis酸和溶剂,进行二茂铁和乙酰氯的Friedel-Crafts的乙酰化反应.探讨了离子液体活性、用量,乙酰氯用量、反应温度及反应时间等因素对二茂铁Friedel-Crafts反应的影响,得到适宜的合成工艺:反应温度25℃,反应时间2.5 h,n(ILs)∶n(FC)=2.0∶1,n(乙酰氯)∶n(FC)=4.0∶1.上述合成工艺下,乙酰基二茂铁收率为70.2%.产物用元素分析、红外谱图进行了表征.
