Functional mesoporous poly (ionic liquid) derived from P123: From synthesis to catalysis and alkylation of styrene and o‐xylene. (5th February 2019)

• Record Type: Journal Article
• Authors: Wang, Beibei; Sheng, Xiaoli; Zhou, Yuming; Zhu, Zhiying; Liu, Yonghui; Sha, Xiao; Zhang, Chao; Gao, Huaying
• Is Part Of: Applied organometallic chemistry. Volume 33:Number 4(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-02-05
• Subjects: alkylation -- catalyst -- mesoporous poly ionic liquid -- P123; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.4719
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : A novel strategy was proposed for the fabrication of high‐performance acidic mesoporous poly ionic liquids catalyst. In this work, mesoporous poly ionic liquids (MPILs) were synthesized with P123 (PEO20 PPO70 PEO20 ) served as pore‐forming agent. Then, MPILs were treated with PW 3− anion exchange, thereby fabricating PW/MPIL‐S(x). MPIL and PW/MPIL‐S(x) were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), Thermogravimetric analysis (TA), N2 adsorption–desorption and Fourier transform infrared (FT‐IR) spectra and X‐ray photoelectron spectroscopy (XPS) spectra. The effect of solvent and concentration of P123 on the morphology and mesoporous structure of MPILs were investigated systematically. And the results show that MPILs were featured with mesoporous channel structure, high surface area (up to 737 m 2 /g) and large pore volumes (1.16 cm 3 /g), which benefit heterogeneous phase reaction (such as, alkylation of styrene with o ‐xylene). In the alkylation reaction, under optimal reaction conditions, the catalyst PW/MPIL‐THF (4.0 g) shows high conversion of styrene (100%) and PXE yield (96.21%), demonstrating the excellent catalytic activities. Furthermore, PW/MPIL‐S(x) are easy to be separated from the catalytic system by filtration and show no obvious decrease in catalytic activity after 6 cycle runs. The obtained PW/MPIL‐S(x) catalyst exhibit high thermal and mechanical stability as well, indicating extensive application in high temperature acidic catalysis. This work might open up a new method for the synthesizing of porous polymer catalysts in the future. Abstract : This work could open up a new strategy for controllable synthesis of complex hollow structures and other functional materials.