Ionic liquid tethered post functionalized ZIF-90 framework for the cycloaddition of propylene oxide and CO₂

Abstract

Covalent post functionalized ZIF-90 with pyridinium based ionic liquid was prepared and used as catalyst for the solventless synthesis of propylene carbonate.

Ionic‐Liquid‐Functionalized UiO‐66 Framework: An Experimental and Theoretical Study on the Cycloaddition of CO2 and Epoxides

“…Imidazoliumbased IL-decorated catalysts such as UiO-67-IL [41] and IL@MIL- [42] were reported as active catalysts for CO 2 /ECH coupling reactions (Table 3, entries 1a nd 2). At high reaction temperature (120 8C), IL-ZIF-90 [44] afforded 83 %c onversion of ECH within 3h (Table 3, entry 4). Ding et al [43] reported that imidazolium-based poly(ionic liquid)s confined in MOFs, polyILs@MIL-101, afforded an ECH carbonatey ield of 94 %a t7 08Cf or 24 h with the use of 100 mg of catalyst (Table 3, entry 3).…”

“…[26,27] Over the past decades, many supported IL-phase( SILP) heterogeneousc atalysts with silicag els, SiO 2 / Al 2 O 3 ,a ctivated carbon,T iO 2 ,a nd mesoporous silica as porous support materials have been reported for various catalytic reactions. [42][43][44][45][46] However, the synthesis of IL-immobilized metalorganic heterogeneous catalysts that efficientlyc atalyze cycloaddition reactions without ac ocatalystu nder mild conditions of temperature and CO 2 pressure remains challenging. Therefore, several approaches have been established for the synthesis of efficient IL-based poroush eterogeneousc atalysts.…”

“…[41][42][43][44][45][46] Herein,w er eport the fabrication of two new IL-tethered Zr-based UiO-66-NH 2 heterogeneous catalysts by ap ostimpregnation methodw herein the ILs are incorporated into MOFs after their preparation.T he resulting heterogeneous catalysts werea pplied in the cycloaddition of epoxides and CO 2 . Thus far,I Ls have been incorporated in MOFs by ionothermal synthesis, wet impregnation, capillary action, post-impregnation, ship-in-bottle and bottlearound-ship methods, direct ligand functionalization, and so forth.…”

Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO 2 adsorption

“…In the study of Tharun and co-workers [140], a novel heterogeneous one-component catalyst was developed by covalent post functionalization of zeolitic imidazolate framework-90 (ZIF-90) with a pyridinium based IL to generate IL supported ZIF-90 (IL-ZIF-90). The synthesized catalyst has been successfully employed for the solventless cycloaddition of epoxides and CO 2 to yield cyclic carbonates under mild reaction conditions.…”

Efficient chemical fixation of CO2 into cyclic carbonates using poly(4‐vinylpyridine) supported iodine as an eco‐friendly and reusable heterogeneous catalyst

“…In view on the importance of the chemical fixation of CO 2 , a broad range of homogeneous and heterogeneous catalysts including organic bases, ionic liquids, supported catalysts, organic copolymers, and carbon materials have been investigated for the cycloaddition of CO 2 with epoxides . Among these materials, different polymer‐supported catalysts with desirable selectivity have been developed which are superior to homogeneous catalysts in terms of catalyst stability and separation of catalyst . However, some of the catalysts and protocols have drawbacks such as the use of a high temperature and CO 2 pressure, metallic ions, high‐cost procedures for product separation and/or catalyst synthesis, low activity, poor stability, unsatisfactory reusability, and need a long reaction time.…”