Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (8): 1655.doi: 10.7503/cjcu20190201

• Physical Chemistry • Previous Articles     Next Articles

Syntheses of MIL-53 MOFs Materials and Their Catalytic Properties in Strecker Reactions

WANG Pengcheng1, SHAN Liang2, FAN Yong1, WANG Li1, XU Jianing1, WU Shujie1   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, China;
    2. College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China
  • Received:2019-04-03 Revised:2019-07-23 Online:2019-08-10 Published:2019-07-12
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21171065, 51775232, 21401005).

Abstract: Four metal organic frameworks(MOFs), NH2-MIL-53(Sc), NH2-MIL-53(Al), MIL-53(Sc) and NO2-MIL-53(Sc), were synthesized via changing the metal center and functional group of ligand, hereafter, their catalytic performance in the formation of α-aminonitrile(donated Strecker reaction) was investigated. Noteworthy, it is shown that the reusable NH2-MIL-53(Sc) shows very good catalytic performance for Strecker reaction. Hereafter, comparing the catalytic experiments between NH2-MIL-53(Sc) and NH2-MIL-53(Al), the influence of metal ion radius and unsaturated coordination metal sites on Strecker reaction were analyzed. Furthermore, in comparison with the catalytic effects between NH2-MIL-53(Sc) and MIL-53(Sc), the results demonstrated that the amino group can be served as the Lewis base sites, which can promote Strecker reaction through Lewis acid and Lewis base bifunctional synergistic mechanism. In addition, comparing the catalytic performances between NO2-MIL-53(Sc) and MIL-53(Sc), it is confirmed that the NO2 group on the catalyst structure has an important influence on the Strecker reaction. Finally, in comparison with the catalytic effects among NH2-MIL-53(Sc), scandium nitrate and 2-aminoterephthalic acid(ATA) ligand, it is concluded that the nanoscale pore structure of NH2-MIL-53(Sc) is the key factor to improve the selectivity of product in Strecker reaction.

Key words: Metal organic frameworks, MIL-53, Lewis acid and Lewis base bifunctional catalysis, Porous structure, Strecker reaction

CLC Number: 

TrendMD: