| Title: | Fast Assembly of Metal Organic Framework UiO-66 in Acid-Base Tunable Deep Eutectic Solvent for the Acetalization of Benzaldehyde and Methanol |
| Author(s): | Chen L; Ye X; Zhang T; Qin H; Cheng H; Qi Z; |
| Address: | "State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China" |
| DOI: | 10.3390/molecules27217246 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Zirconium-based metal-organic frameworks (MOFs) have attracted extensive attention owing to their robust stability and facile functionalization. However, they are generally prepared in common volatile solvents within a long reaction time. Here, we introduced environmentally friendly, cheap, and acid-based tunable deep eutectic solvents (DESs) formed from 2-methyl imidazole (MIm) and p-toluenesulfonic acid (PTSA) which significantly accelerated the assembly of zirconium-based MOF (UiO-66) without any aggressive additives. PTSA in acidic DES and ZrOCl(2) preliminarily formed Zr(IV) oxo organic acid framework, whereas basic DES completely dissolved the ligand of UiO-66. The strong hydrogen bond effect of PTSA and MIm efficiently accelerated the linker exchange between zirconium oxo organic coordination in acidic DES and benzenedicarboxylate linker in weak basic DES within a reaction time of 2 h at 50 degrees C. Thus, UiO-66 was quickly assembled with small particle sizes and used as an excellent catalyst for the acetalization of benzaldehyde and methanol. Therefore, the developed synthesis approach provides a new green strategy to quickly prepare and design various structures of metal-based compounds under mild reaction conditions" |
| Keywords: | UiO-66 acetalization acid-base deep eutectic solvent metal organic framework; |
| Notes: | "PubMed-not-MEDLINEChen, Lifang Ye, Xiangzhu Zhang, Ting Qin, Hao Cheng, Hongye Qi, Zhiwen eng 19ZR1412500/Natural Science Foundation of Shanghai/ 22278134/National Natural Science Foundation of China/ Switzerland 2022/11/12 Molecules. 2022 Oct 25; 27(21):7246. doi: 10.3390/molecules27217246" |
