Efficient Fixation of CO₂ by a Zinc‐Coordinated Conjugated Microporous Polymer

Abstract

Zinc-coordinated conjugated microporous polymers (Zn-CMPs), prepared by linking salen zinc and 1,3,5-triethynylbenzene, exhibit extraordinary activities (turnover frequencies of up to 11600 h(-1) ), broad substrate scope, and group tolerance for the synthesis of functional organic carbonates by coupling epoxides with CO2 at 120 °C and 3.0 MPa without the use of additional solvents. The catalytic activity of Zn-CMP is comparable to those of homogeneous catalysts and superior to those of other heterogeneous catalysts. This catalyst could be reused more than ten times without a significant decrease in performance.

Metalated porous porphyrin polymers as efficient heterogeneous catalysts for cycloaddition of epoxides with CO2 under ambient conditions

“…After the metalation of cobalt, the Co/POP-TPP exhibits a little high adsorption capacity (32.6 cm 3 /g at 25°C under 1 atm CO 2 ). These results are comparable with those reported previously [44,46,58]. In contrast, the Co/TPP has much lower adsorption capacity.…”

“…S8) at 25°C under 1 atm CO 2 . The enrichment of the CO 2 in the nanopores is expected to be beneficial for the promotion of the CO 2 conversion [44,46].…”

“…Recently, there are encouraging heterogeneous catalysts such as Cu-MOF [44] and metal-salen based conjugated microporous polymers (metal-salen-CMP) [45], exhibiting excellent catalytic performance for production of cyclic carbonates, and even outperforming the corresponding homogeneous catalysts under real mild conditions such as at room temperature and atmospheric pressure [44][45][46]. However, in these catalysts it is still observed a little metal leaching.…”

Synthesis of conjugated microporous polymers for gas storage and selective adsorption

“…In our previous studies, a variety of CMPs with different morphologies and functionalities have been designed and synthesized as porous mediums for various purposes including hydrogen storage [23,24], CO 2 capture [25][26][27], iodine capture [27], composites [28], and oil absorption [22,[29][30][31]. In particular, we firstly reported the superhydrophobic and superoleophilic wettabilities of the CMPs [22].…”

Cycloaddition of CO 2 and epoxides catalyzed by dicationic ionic liquids mediated metal halide: Influence of the dication on catalytic activity

“…Nevertheless, CO2 is an unreactive molecule and high energy barrier of the noncatalyzed cycloaddition associated with CO2 is necessary for the reaction to occur spontaneously [7,8]. So far, a plethora of catalytic systems for producing cyclic carbonates has been successfully developed in order to reduce the activation energy of the cycloaddition reaction, including metal oxides [9,10], alkali metal salts [11,12], metal-salen complexes [13,14], metal-organic framework (MOF) [15,16], microporous polymer [17], graphitic carbon nitride [18,19] and ionic liquids [20][21][22][23][24].…”