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化工学报  2015 

2,6-二甲氧基苯酚在1-丁基-3-甲基咪唑四氟硼酸盐水溶液中溶解行为的红外光谱分析

DOI: 10.11949/j.issn.0438-1157.20150123, PP. 54-59

Keywords: 离子液体,,2,6-二甲氧基苯酚,溶解性,红外光谱

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Abstract:

利用衰减全反射红外光谱(ATR-IR)和二维相关红外技术研究2,6-二甲氧基苯酚(2,6-DMP)在1-丁基-3-甲基咪唑四氟硼酸盐([C4mim]BF4)水溶液(离子液体摩尔分数xIL=1.0~0.02)中的溶解行为。随着水量增大,2,6-DMP溶解度先增大而后急剧减小,对应的xIL阈值为0.1。2,6-DMP与[C4mim]BF4之间存在强相互作用,2,6-DMP上的甲氧基是重要作用位点之一;当少量的水加入[C4mim]BF4(xIL=0.1~1.0),致密的离子簇结构被解离,2,6-DMP容易与[C4mim]BF4作用,溶解度增大;随着大量水加入(0.02

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