Combination of binary active sites into heterogeneous porous polymer catalysts for efficient transformation of CO2 under mild conditions

Dai, Zhifeng; Tang, Yongquan; Zhang, Fei; Xiong, Yubing; Wang, Sai; Sun, Qi; Wang, Liang; Meng, Xiangju; Zhao, Leihong; Xiao, Feng‐Shou

doi:10.1016/s1872-2067(20)63679-8

Cited by 62 publications

(34 citation statements)

References 57 publications

(59 reference statements)

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“…106 Therefore, current research trends are focused on the development of more efficient heterogeneous catalysts with an abundant number of catalytically active sites, which can show enhanced performances under mild reaction conditions. 101,107,108…”

Section: Introductionmentioning

confidence: 99%

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Raju

Prasad

Srinivasappa

et al. 2022

Sustainable Energy Fuels

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Section: Introductionmentioning

confidence: 99%

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Raju

Prasad

Srinivasappa

et al. 2022

Sustainable Energy Fuels

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“…However, most of these catalysts are homogeneous and severe conditions, such as high temperature and high pressure or extra additives served as co-catalysts are always required [22,26]. Obviously, the utilization of homogeneous catalysts or additives will complicate the catalysts' separation and product purification; the separation processes of the catalysts from the reaction mixture are energy-intensive [27][28][29]. In this case, the development of novel heterogeneous catalysts has drawn the attention of many researchers.…”

Section: Introductionmentioning

confidence: 99%

Functional Porous Ionic Polymers as Efficient Heterogeneous Catalysts for the Chemical Fixation of CO2 under Mild Conditions

et al. 2022

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The development of efficient and metal-free heterogeneous catalysts for the chemical fixation of CO2 into value-added products is still a challenge. Herein, we reported two kinds of polar group (−COOH, −OH)-functionalized porous ionic polymers (PIPs) that were constructed from the corresponding phosphonium salt monomers (v-PBC and v-PBH) using a solvothermal radical polymerization method. The resulting PIPs (POP-PBC and POP-PBH) can be used as efficient bifunctional heterogeneous catalysts in the cycloaddition reaction of CO2 with epoxides under relatively low temperature, ambient pressure, and metal-free conditions without any additives. It was found that the catalytic activities of the POP-PBC and POP-PBH were comparable with the homogeneous catalysts of Me-PBC and PBH and were higher than that of the POP-PPh3-COOH that was synthesized through a post-modification method, indicating the importance of the high concentration catalytic active sites in the heterogeneous catalysts. Reaction under low CO2 concentration conditions showed that the activity of the POP-PBC (with a conversion of 53.8% and a selectivity of 99.0%) was higher than that of the POP-PBH (with a conversion of 32.3% and a selectivity of 99.0%), verifying the promoting effect of the polar group (−COOH group) in the porous framework. The POP-PBC can also be recycled at least five times without a significant loss of catalytic activity, indicating the high stability and robustness of the PIPs-based heterogeneous catalysts.

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“…Most reported solid catalysts mainly possess Lewis acid sites, and homogeneous nucleophilic reagents should be added during the catalytic process, which causes difficulty in catalyst recycling and product purification. ,− Recently, the synthesis of bifunctional catalysts incorporated with both Lewis acid and nucleophilic sites has attracted much research attention for the CO 2 cycloaddition reaction considering that the close contact of the two catalytic sites in the solid catalysts benefits the high activity and catalyst recycling. − For most reported works, pure CO 2 was used for the cycloaddition reaction. The capture of CO 2 from flue gases or air is an energy-consuming process. ,− The direct conversion of dilute CO 2 to chemicals is more attractive but more challenging.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bifunctional Porphyrin Polymers for Catalytic Conversion of Dilute CO₂ to Cyclic Carbonates

Liu

Jayakumar

Chen

et al. 2021

ACS Appl. Mater. Interfaces

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Development of efficient solid catalysts for catalytic conversion of dilute CO 2 is of extreme importance for carbon capture and utilization. We report the synthesis of bifunctional polymers co-incorporated with porphyrin-Zn as Lewis acid sites and Br − as nucleophiles for the cycloaddition of dilute CO 2 with epoxides in this work. It was found that the Br − /Zn ratio has a volcano relation with the activity of bifunctional polymers in a cycloaddition reaction, indicating the synergy effect between Lewis acid sites and nucleophiles. The turnover frequency (TOF) of the bifunctional polymer is more than four-fold that of the physical mixture of tetrabutylammonium bromide and porphyrin-Zn-incorporated polymer, implying the enhanced cooperation between Br − and porphyrin-Zn in the polymer network. The bifunctional polymer with optimized Br − /Zn afforded 99% conversion, 99% selectivity, and a TOF as high as 12,000 h −1 for the cycloaddition of CO 2 and propylene oxide, which is among the most active solid catalysts ever reported. Furthermore, the bifunctional polymer could efficiently catalyze the cycloaddition of epichlorohydrin with dilute CO 2 (7.5% CO 2 balanced by N 2 ) even under ambient conditions, demonstrating its potential application in industrial-scale production.

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Combination of binary active sites into heterogeneous porous polymer catalysts for efficient transformation of CO2 under mild conditions

Cited by 62 publications

References 57 publications

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Functional Porous Ionic Polymers as Efficient Heterogeneous Catalysts for the Chemical Fixation of CO2 under Mild Conditions

Synthesis of Bifunctional Porphyrin Polymers for Catalytic Conversion of Dilute CO₂ to Cyclic Carbonates

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Combination of binary active sites into heterogeneous porous polymer catalysts for efficient transformation of CO2 under mild conditions

Cited by 62 publications

References 57 publications

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO2 in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO2 in epoxides to form organic carbonates

Functional Porous Ionic Polymers as Efficient Heterogeneous Catalysts for the Chemical Fixation of CO2 under Mild Conditions

Synthesis of Bifunctional Porphyrin Polymers for Catalytic Conversion of Dilute CO2 to Cyclic Carbonates

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Product

Resources

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Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Synthesis of Bifunctional Porphyrin Polymers for Catalytic Conversion of Dilute CO₂ to Cyclic Carbonates