通过红外滴定和核磁共振方法联用测定酰胺-氯化铝基离子液体类似物的路易斯酸度

Hu Pengcheng, Jiang Wei, Zhong Lijuan, Zhou Shu-Feng

College of Chemical Engineering, Huaqiao University Xiamen 361021 Fujian China

RSC Adv. 2018 Apr 10;8(24):13248-13252. doi: 10.1039/c8ra01845f. eCollection 2018 Apr 9.

A combinatorial method to determine both acidic strength and acidic amount of each Lewis acid site in amide-AlCl based ionic liquid (IL) analogues was developed by the combination of IR titration and NMR analysis. P NMR was used to distinguish effectively the acidic strength of each Lewis acid site in the amide-AlCl based IL analogues. Nitrobenzene was used as a molecular probe to measure the total Lewis acidic amount of the amide-AlCl based IL analogues by IR titration. The acidic amount of each Lewis acid site in the amide-AlCl based IL analogues was calculated with the assistance of Al NMR analysis.

通过红外滴定和核磁共振分析相结合的方法，开发了一种用于确定酰胺 - 氯化铝基离子液体（IL）类似物中每个路易斯酸位点的酸性强度和酸量的组合方法。利用³¹P核磁共振有效地区分了酰胺 - 氯化铝基离子液体类似物中每个路易斯酸位点的酸性强度。用硝基苯作为分子探针，通过红外滴定测量酰胺 - 氯化铝基离子液体类似物的总路易斯酸量。借助铝核磁共振分析计算了酰胺 - 氯化铝基离子液体类似物中每个路易斯酸位点的酸量。