Conjugated Microporous Polymers for Catalytic CO₂ Conversion

Advanced Science, Journal Year: 2024, Volume and Issue: 11(14)

Published: Feb. 7, 2024

Abstract Rising carbon dioxide (CO 2 ) levels in the atmosphere are recognized as a threat to atmospheric stability and life. Although this greenhouse gas is being produced on large scale, there solutions reduction indeed utilization of gas. Many these involve costly or unstable technologies, such air‐sensitive metal–organic frameworks (MOFs) for CO capture “non‐green” systems amine scrubbing. Conjugated microporous polymers (CMPs) represent simpler, cheaper, greener solution utilization. They often easy synthesize at scale (a one pot reaction many cases), chemically thermally stable (especially comparison with their MOF covalent organic framework (COF) counterparts, owing amorphous nature), and, result, cheap manufacture. Furthermore, surface areas, tunable porous chemical structures mean they reported highly efficient motifs. In addition, provide dual pathway utilize captured via conversion electrochemical into industrially valuable products. Recent studies show that all attractive properties can be realized metal‐free CMPs, presenting truly green option. The promising results two fields CMP applications reviewed explored here.

Language: Английский

---

Macrocycle-on-COF photocatalyst constructed by in-situ linker exchange for efficient photocatalytic CO2 cycloaddition

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 350, P. 123943 - 123943

Published: April 24, 2024

Language: Английский

---

Two 2D Metal–Organic Frameworks Based on Purine Carboxylic Acid Ligands for Photocatalytic Oxidation of Sulfides and CO₂ Chemical Fixation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(20), P. 9109 - 9118

Published: May 7, 2024

Two two-dimensional (2D) layered metal-organic frameworks (MOFs), namely, {[Yb(

Language: Английский

---

Multifunctional Zn-N4 Catalysts for the Coupling of CO₂ with Epoxides into Cyclic Carbonates

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(15), P. 10386 - 10393

Published: July 25, 2023

The catalytic conversion of greenhouse gas CO2 into valuable chemicals is a vital goal toward carbon balance and sustainability. In recent decades, the chemical fixation cyclic carbonates has gained much attention. this work, series zinc complexes bearing tetradentate aminopyridine (N4) ligands have been synthesized characterized. These were applied to coupling with epoxides in excellent yields broad substrate scope under cocatalyst- solvent-free conditions. Moreover, catalysts could be readily recovered reused five times without an obvious loss activity. Based on spectroscopic characterizations experimental results, catalyst Zn-3 (DAP-ZnBr2, DAP = 1,4-bis(2-pyridymethyl)-1,4-diazepane) found multifunctional because presence Lewis acidic center nuclephilic halide anion, one pyridine released for activation during reaction.

Language: Английский

---

Aluminum Porphyrin-Based Ionic Porous Aromatic Frameworks Having High Surface Areas and Highly Dispersed Dual-Function Sites for Boosting the Catalytic Conversion of CO₂ into Cyclic Carbonates

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(6), P. 8263 - 8274

Published: Feb. 3, 2023

Multifunctionalization of porous organic polymers toward synergistic CO2 catalysis has drawn much attention in recent decades, but it still faces many challenges. Herein, we develop a facile, simple, and efficient strategy to obtain series aluminum porphyrin-based ionic aromatic frameworks (iPAFs), which are considered excellent bifunctional catalysts for converting into cyclic carbonates without any cocatalyst under mild solvent-free conditions. By increasing the amounts tetraphenylmethane fragments porphyrin backbones, cooperative effect between Lewis acidic metal centers nucleophilic sites been enhanced then significant improvement catalytic activity can be achieved owing high surface areas (up 719 m2·g-1), abundant hierarchical micro-mesopores, prominent adsorption capacities 1.8 mmol·g-1 at 273 K) as well highly dispersed dual-function sites. More fascinatingly, high-active AlPor-iPAF-3 enables cycloaddition perform with diluted (15% 85% N2, v/v) or ambient Therefore, this postsynthetic modification procedure combination framework dilution provides new approach fabricating high-surface-area metalloporphyrin-based (PIPs) structures, is conducive improving accessibility multiple active around substrates.

Language: Английский

---

Cellulose nanofibers (CNF) supported (Salen)Cr(III) composite as an efficient heterogeneous catalyst for CO2 cycloaddition

Molecular Catalysis, Journal Year: 2023, Volume and Issue: 547, P. 113344 - 113344

Published: June 28, 2023

Language: Английский

---

Porous organic polymers; an emerging material applied in energy, environmental and biomedical applications

Applied Materials Today, Journal Year: 2024, Volume and Issue: 38, P. 102198 - 102198

Published: April 30, 2024

Language: Английский

---

Co(II)–N4 Catalysts for the Coupling of CO₂ with Epoxides into Cyclic Carbonates: Catalytic Activity, Computational and Kinetic Studies

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(20), P. 9156 - 9163

Published: May 7, 2024

In this study, we synthesized and characterized a series of cobalt(II) complexes bearing linear tetradentate N4 ligands. These Co(II)-N4 proved to be efficient catalysts for the cycloaddition reaction between carbon dioxide epoxides even at room temperature 1 bar pressure without need solvents or cocatalysts. Furthermore, when combined with (triphenylphosphoranylidene)ammonium chloride (PPNCl) as cocatalyst, Co-N4 exhibited an impressive turnover frequency up 41,000 h

Language: Английский

---

Cobalt porphyrin-based hypercrosslinked ionic polymers as biomimetic nanoreactors for CO₂ conversion to cyclic carbonates

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(12), P. 1599 - 1602

Published: Jan. 1, 2024

Cobalt porphyrin-based hypercrosslinked ionic polymers act as bifunctional catalysts for the conversion of CO 2 into cyclic carbonates due to high surface areas, densely located groups and highly dispersed cobalt sites.

Language: Английский

---

Unveiling the integrated function of metallo‐/ionic‐covalent organic polymers for boosting atmospheric CO₂ conversion

AIChE Journal, Journal Year: 2024, Volume and Issue: 70(8)

Published: May 14, 2024

Abstract Multifunctional metallo‐/ionic‐covalent organic polymers (TCTB@Zn‐iCOPs) were constructed through one‐pot multicomponent reaction in a deep eutectic solvent at room temperature. The structures of various TCTB@Zn‐iCOPs characterized, demonstrating their successful integration multiple sites and excellent structural stability. Then employed to transform atmospheric CO 2 into cyclic carbonates. results showed that satisfactory product yields obtained under mild additive‐free conditions, with high TOF value 101 h −1 ; furthermore, the optimized TCTB@Zn‐iCOP exhibited versatility catalyzing cycloaddition reactions between substituted epoxides , its activity did not significantly decrease after being reused for five times. Compared previously reported nonmetallic iCOPs, shows improved Finally, DFT calculations conducted along comparison energy barriers possible paths, gaining an in‐depth understanding synergistic catalytic mechanism involving sites.

Language: Английский

---