Synthesis of P123‐Templated and DVB‐Cross‐linked Meso‐macroporous Poly (ionic liquids) with High‐Performance Alkylation

Abstract

Meso‐macroporous poly (ionic liquids) (MPILs) were successfully synthesized through a novel strategy with P123 (PEO20PPO70PEO20) as the pore‐forming agent and divinylbenzene as crosslinker. Then effects of reaction temperature and the molar ratio of ionic liquid to divinylbenzene (IL to DVB) were systematically investigated together with the morphology and structure of MPILs. It was found the MPILs owned a meso‐macroporous channel‐like structure, large surface area (up to 732 m2/g), large pore volume (1.42 cm3/g) and high thermal stability. Meanwhile, the Brunauer–Emmett–Teller surface of MPILs could be fabricated by adjusting the reaction temperature and especially the IL to DVB molar ratio. In the probe reaction of alkylation of styrene and o‐xylene, a 100% conversion of styrene and 96.4% PXE yield was acquired, and this is more expert than common commercial liquid acid catalyst. This work might develop a novel way for synthesizing porous heterogeneous polymer catalysts in the future and owning a promising future applied in other acidic catalytic reactions.

A novel ionic liquid immobilized on FSM-16: a novel recoverable nanocatalyst for the synthesis of biscoumarin derivatives

“…17 Some of the other ionic liquids that have been investigated are [BEMIM][HSO 4 ], 18 L-prolineIL-SiO 2 @Fe 3 O 4 , 19 MNPs@SiO 2 -IL, 20 [PyN(CH 2 ) 4 SO 3 H]-[CH 3 PhSO 3 ], 21 [bmim]OH, 22 MPM-SO 3 H-[C 3 V][SO 3 CF 3 ], 23 [HDSA]HSO 4 À , 24 NFC-TMSPhI, 25 and PW/MPIL-100. 26 Mesoporous silica materials (MSMs) offer a high surface area, good thermal stability, dense silanol groups on the surface, and tunable pore size, which allows the surface activity and nature of the MSM to be modified. [27][28][29][30] FSM-16, a remarkable synthetic mesoporous material, is manufactured by intercalating a quarterly ammonium surfactant template into a layered sodium silicate, kanemite, followed by calcination to remove the template.…”

“…17 Some of the other ionic liquids that have been investigated are [BEMIM][HSO 4 ], 18 l -prolineIL-SiO 2 @Fe 3 O 4 , 19 MNPs@SiO 2 -IL, 20 [PyN(CH 2 ) 4 SO 3 H][CH 3 PhSO 3 ], 21 [bmim]OH, 22 MPM-SO 3 H-[C 3 V][SO 3 CF 3 ], 23 [HDSA]HSO 4 − , 24 NFC-TMSPhI, 25 and PW/MPIL-100. 26…”