Novel SO3H-functionalized polyoxometalate-based ionic liquids as highly efficient catalysts for esterification reaction
作者:Mosadegh Keshavarz、Nasir Iravani、Abolfath Parhami
DOI:10.1016/j.molstruc.2019.04.027
日期:2019.8
Abstract Three novel heteropolyanion-based Bronsted acidic ionic liquids (BAILs), butane mono sulfoacid-functionalized 1,10-phenanthrolinum, butane mono and bis sulfoacid-functionalized 1,4-dimethylpiperazinium salts of phosphortungstate catalyst (PhBs1-PW, [PipBs1]3-PW and [PipBs2]3-(PW)2) were synthesized and well characterized with FTIR, 1H and 13C NMR, Electro-Spray Ionization Mass Spectrometry
摘要 三种新型杂多阴离子型布朗斯台德酸性离子液体 (BAILs)、丁烷单磺酸官能化 1,10-菲啉、丁烷单和双磺酸官能化 1,4-二甲基哌嗪鎓盐的磷钨酸盐催化剂 (PhBs1-PW, [PipBs1]3 -PW 和 [PipBs2]3-(PW)2) 被合成并用 FTIR、1H 和 13C NMR、电喷雾电离质谱 (ESI-MS)、元素分析 (CHNS)、EDX 和 TG 分析技术进行了很好的表征。使用这些催化剂进行一元羧酸与一元醇的酯化反应。引入的催化剂在反应后表现出自分离性能,经六次循环试验证实,该催化剂易于回收且可稳定重复使用。此外,双磺酸官能化的 1,