Core-shell catalyst with synergistic hydroxyl and nitrogen active sites for CO2 cycloaddition

Journal of environmental chemical engineering, Год журнала: 2021, Номер 9(6), С. 106452 - 106452

Опубликована: Сен. 27, 2021

Язык: Английский

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Imidazolium and Pyridinium‐Based Ionic Porous Organic Polymers: Advances in Transformative Solutions for Oxoanion Sequestration and Non‐Redox CO₂ Fixation

ChemPlusChem, Год журнала: 2024, Номер 89(11)

Опубликована: Июль 4, 2024

Abstract The rapid pace of industrialization has led to a multitude detrimental environmental consequences, including water pollution and global warming. Consequently, there is an urgent need devise appropriate materials address these challenges. Ionic porous organic polymers (iPOPs) have emerged as promising for oxoanion sequestration non‐redox CO 2 fixation. Notably, iPOPs offer hydrothermal stability, structural tunability, charged framework, readily available nucleophilic counteranions. This review explores the significance pores functionalities alongside design strategies outlined in existing literature, mainly focusing on incorporation pyridinium imidazolium units into nitrogen‐rich present also addresses current challenges future prospects, delineating development innovative treatment heterogeneous catalysis.

Язык: Английский

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Metalated Porous Phenanthroline‐Based Polymers as Efficient Heterogeneous Catalysts for Regioselective C−H Activation of Heteroarenes

Chemistry - An Asian Journal, Год журнала: 2021, Номер 16(17), С. 2469 - 2474

Опубликована: Июль 9, 2021

Abstract Direct C−H bond activation of heterocycles as a step‐economical and environmentally friendly approach to build the heterobiaryls motifs is highly attractive, but it still has challenge design prepare cheap regioselective heterogeneous catalyst. To tackle this challenge, we have introduced Ni species into porous phenanthroline‐based organic polymer donated POP‐Phen@Ni. This catalyst shows excellent catalytic performances in heterocycles, even better than those corresponding homogenous H/D exchange experiments show that lithium bis(trimethylsilyl)amide (LiHMDS), base added reaction, play very important role during reaction processes. We believe would open new door for catalysts efficiently catalyze heterocycles.

Язык: Английский

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Investigation on the catalytic behavior of a novel thulium-organic framework with a planar tetranuclear {Tm₄} cluster as the active center for chemical CO₂ fixation

Dalton Transactions, Год журнала: 2021, Номер 51(2), С. 532 - 540

Опубликована: Дек. 6, 2021

Herein, the exquisite combination of coplanar [Tm4(CO2)10(μ3-OH)2(μ2-HCO2)(OH2)2] clusters ({Tm4}) and structure-oriented functional BDCP5- leads to highly robust nanoporous {Tm4}-organic framework {(Me2NH2)[Tm4(BDCP)2(μ3-OH)2(μ2-HCO2)(H2O)2]·7DMF·5H2O}n (NUC-37, H5BDCP = 2,6-bis(2,4-dicarboxylphenyl)-4-(4-carboxylphenyl)pyridine). To best our knowledge, NUC-37 is first anionic {Ln4}-based three-dimensional with embedded hierarchical microporous channels, among which each larger one shaped by six rows {Tm4} characterized plentiful coexisting Lewis acid-base sites on inner wall including open TmIII sites, Npyridine atoms, μ3-OH μ2-HCO2. Catalytic experimental studies exhibit that possesses selective catalytic activity cycloaddition epoxides CO2 as well high recyclability under gentle conditions, should be ascribed its nanoscale rich bifunctional active stable physicochemical properties. This work offers an effective means for synthesizing productive cluster-based Ln-MOF catalysts employing ligands controlling solvothermal reaction conditions.

Язык: Английский

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Ionization of Porous Hypercrosslinked Polymers for Catalyzing Room-Temperature CO2 Reduction via Formamides Synthesis

Catalysis Letters, Год журнала: 2021, Номер 151(10), С. 2919 - 2927

Опубликована: Янв. 30, 2021

Язык: Английский

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