Synthesis of PEI Grafted Poly (Ionic Liquid)s: Optimization and Kinetics Modeling of Effective CO2 Fixation Reactions DOI

Xuanbo Liu,

Ningning Li, Yuhang Zhang

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(15)

Опубликована: Апрель 15, 2024

Abstract Fixing the greenhouse gas CO 2 through epoxide helps to mitigate worldwide ecological troubles. The applications of metal‐free and solvent‐free catalysts remain a challenge for catalytic conversion. In this work, an array quaternary ammonium salts derived from polyethyleneimine with hydroxyl groups ([PEI‐GDMAB‐C n ]Br) were constructed by reaction branched PEI molecular weight 10000 glycidyl alkyl dimethylammonium bromide. A range experiments designed demonstrate that [PEI‐GDMAB‐C ]Br can be considered as valid homogeneous catalyst ‐epoxide cycloaddition reaction. Among ]Br, 18 catalyzed model epichlorohydrin under optimized conditions (T=80 °C, 1.0 atm , 1 mol%, ECH 15 mmol, 16 h) conversion achieved at 97.5 %. Moreover, exhibited stable reusability broad substrate applicability, which was used in following cycle succinctly, because self‐separated properties temperature control. process detected pseudo‐first‐order after kinetic studies E calculated 50.65 kJ/mol. combinatorial mechanism hydrogen bonding bromide ions is suggested explain remarkable performance bifunctional catalyst.

Язык: Английский

Porous bi-functional ionic liquid-grafted metal–organic framework for diluted CO2 cycloaddition reaction DOI
Liwei Sun, Lipeng Wang,

Meilin Yin

и другие.

Separation and Purification Technology, Год журнала: 2024, Номер 352, С. 128222 - 128222

Опубликована: Июнь 1, 2024

Язык: Английский

Процитировано

2
4E evaluation and multi-objective optimization of low concentration flue gas CO2 capture and multi-product conversion process DOI
Yuan Li, Hongxia Wang, Yunsong Yu

и другие.

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 130625 - 130625

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

2
Phosphonium Salt/Al‐Porphyrin Copolymer as Bifunctional Heterogeneous Catalyst for CO2 Conversion to Cyclic Carbonates DOI Creative Commons
Laura Valentino,

Chloé Célis,

Vincenzo Campisciano

и другие.

ChemCatChem, Год журнала: 2023, Номер 16(3)

Опубликована: Ноя. 28, 2023

Abstract The effective chemical valorization of CO 2 by means its conversion into valuable products is now more than ever a topic considerable interest. It on that basis herein we have chosen the and epoxides to cyclic carbonates as convenient route achieve this goal. A new bifunctional (Lewis acid/nucleophile) heterogeneous material, TSP‐AlCl‐PhospBr, was designed in order guarantee close proximity between two active sites can cooperate activation opening epoxide ring. prepared copolymer has been extensively characterized using various spectroscopic analytical techniques. As catalyst, it enables efficient epoxides, even at low temperatures, down 30 °C, without use solvents. In particular, catalyst demonstrates high turnover numbers (TON) frequency values (TOF). Recyclability studies TSP‐AlCl‐PhospBr shown stability reusability for consecutive cycles need reactivation procedures.

Язык: Английский

Процитировано

5
One-step preparation of Pt/Ag nanoclusters for CO2 transformation DOI
Meng Wang, Simin Li,

Xiongkai Tang

и другие.

Physical Chemistry Chemical Physics, Год журнала: 2023, Номер 25(44), С. 30373 - 30380

Опубликована: Янв. 1, 2023

Structurally precise metal nanoclusters with a facile synthetic process and high catalytic performance have been long pursued. These atomically nanocatalysts are regarded as model systems to study structure-performance relationships, surface coordination chemistry, the reaction mechanism of heterogeneous catalysts. Nevertheless, research on silver-based for driving chemical transformations is sluggish in comparison gold counterparts. Herein, we report one-step synthesis Pt/Ag alloy [PtAg9(C18H12Br3P)7Cl3](C18H12Br3P), which highly active catalysing cycloaddition reactions CO2 epoxides. The cluster was obtained rather simple way reduction silver platinum salts presence ligands one pot. molecular structure titled describes protection Pt-centred Ag9 crown by shell phosphine halides. Its electronic structure, revealed density function theoretical calculations, adopts superatomic geometry 1S21P6 configuration. Interestingly, displays activity formation cyclic carbonates from under mind conditions.

Язык: Английский

Процитировано

1
Synthesis of PEI Grafted Poly (Ionic Liquid)s: Optimization and Kinetics Modeling of Effective CO2 Fixation Reactions DOI

Xuanbo Liu,

Ningning Li, Yuhang Zhang

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(15)

Опубликована: Апрель 15, 2024

Abstract Fixing the greenhouse gas CO 2 through epoxide helps to mitigate worldwide ecological troubles. The applications of metal‐free and solvent‐free catalysts remain a challenge for catalytic conversion. In this work, an array quaternary ammonium salts derived from polyethyleneimine with hydroxyl groups ([PEI‐GDMAB‐C n ]Br) were constructed by reaction branched PEI molecular weight 10000 glycidyl alkyl dimethylammonium bromide. A range experiments designed demonstrate that [PEI‐GDMAB‐C ]Br can be considered as valid homogeneous catalyst ‐epoxide cycloaddition reaction. Among ]Br, 18 catalyzed model epichlorohydrin under optimized conditions (T=80 °C, 1.0 atm , 1 mol%, ECH 15 mmol, 16 h) conversion achieved at 97.5 %. Moreover, exhibited stable reusability broad substrate applicability, which was used in following cycle succinctly, because self‐separated properties temperature control. process detected pseudo‐first‐order after kinetic studies E calculated 50.65 kJ/mol. combinatorial mechanism hydrogen bonding bromide ions is suggested explain remarkable performance bifunctional catalyst.

Язык: Английский

Процитировано

0