Recent developments in organocatalysed transformations of epoxides and carbon dioxide into cyclic carbonates

Green Chemistry, Journal Year: 2020, Volume and Issue: 23(1), P. 77 - 118

Published: Dec. 8, 2020

The synthesis of cyclic carbonates from epoxides and carbon dioxide using metal-free catalyst systems is critically reviewed.

Language: Английский

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Benchmark C₂H₂/CO₂Separation in an Ultra‐Microporous Metal–Organic Framework via Copper(I)‐Alkynyl Chemistry

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(29), P. 15995 - 16002

Published: May 12, 2021

Abstract Separation of acetylene from carbon dioxide remains a daunting challenge because their very similar molecular sizes and physical properties. We herein report the first example using copper(I)‐alkynyl chemistry within an ultra‐microporous MOF (Cu I @UiO‐66‐(COOH) 2 ) to achieve ultrahigh C H /CO separation selectivity. The anchored Cu ions on pore surfaces can specifically strongly interact with molecule through π‐complexation thus rapidly adsorb large amount at low‐pressure region, while effectively reduce CO uptake due small sizes. This material exhibits record high selectivity 185 ambient conditions, significantly higher than previous benchmark ZJU‐74a (36.5) ATC‐Cu (53.6). Theoretical calculations reveal that unique between mainly contributes ultra‐strong binding affinity exceptional performance was evidenced by breakthrough experiments for gas mixtures. work suggests new perspective functionalizing MOFs highly selective over .

Language: Английский

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Synthesis and characterization of biomass-derived surface-modified activated carbon for enhanced CO2 adsorption

Journal of CO2 Utilization, Journal Year: 2021, Volume and Issue: 46, P. 101476 - 101476

Published: Feb. 23, 2021

Language: Английский

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Capture and Separation of SO₂ Traces in Metal–Organic Frameworks via Pre‐Synthetic Pore Environment Tailoring by Methyl Groups

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(33), P. 17998 - 18005

Published: June 15, 2021

Herein, we report a pre-synthetic pore environment design strategy to achieve stable methyl-functionalized metal-organic frameworks (MOFs) for preferential SO

Language: Английский

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Removal of pharmaceutical pollutants from effluent by a plant-based metal–organic framework

Nature Water, Journal Year: 2023, Volume and Issue: 1(5), P. 433 - 442

Published: May 15, 2023

Abstract Emerging organic contaminants (EOCs), such as pharmaceutical compounds, are of growing environmental concern, and there is a need to develop new materials technologies for their efficient removal. Here we developed highly porous stable zirconium–ellagate framework, denoted SU-102, which was used remove EOCs from water, including real municipal wastewater treatment plant effluent. SU-102 adsorbs cationic with particularly high efficiencies, the 17 detected in effluent, all 9 species were removed efficiencies at least 79.0–99.6%, emphasizing importance framework charge on selectivity. As second mechanism EOC removal, photodegraded antibiotic sulphamethazine under visible light. synthesized ellagic acid, an edible polyphenol building unit, highlighting possibility creating high-performance multi-functional sustainably sourced plant-based components.

Language: Английский

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Amine-Functionalized Metal-Organic Frameworks: from Synthetic Design to Scrutiny in Application

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 459, P. 214445 - 214445

Published: Feb. 21, 2022

Language: Английский

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Synthesis of a chitosan@hydroxyapatite composite hybrid using a new approach for high-performance removal of crystal violet dye in aqueous solution, equilibrium isotherms and process optimization

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2023, Volume and Issue: 149, P. 105006 - 105006

Published: June 30, 2023

Language: Английский

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Innovative Adsorbents for Pollutant Removal: Exploring the Latest Research and Applications

Molecules, Journal Year: 2024, Volume and Issue: 29(18), P. 4317 - 4317

Published: Sept. 11, 2024

The growing presence of diverse pollutants, including heavy metals, organic compounds, pharmaceuticals, and emerging contaminants, poses significant environmental health risks. Traditional methods for pollutant removal often face limitations in efficiency, selectivity, sustainability. This review provides a comprehensive analysis recent advancements innovative adsorbents designed to address these challenges. It explores wide array non-conventional adsorbent materials, such as nanocellulose, metal–organic frameworks (MOFs), graphene-based composites, biochar, emphasizing their sources, structural characteristics, unique adsorption mechanisms. discusses processes, the basic principles, kinetics, isotherms, factors influencing efficiency. highlights superior performance materials removing specific pollutants across various settings. practical applications are further explored through case studies industrial settings, pilot studies, field trials, showcasing real-world effectiveness. Additionally, critically examines economic considerations, technical challenges, impacts associated with adsorbents, offering balanced perspective on viability conclusion emphasizes future research directions, focusing development scalable production methods, enhanced material stability, sustainable regeneration techniques. assessment underscores transformative potential remediation critical role advancing protection.

Language: Английский

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Upgrading recovered carbon black (rCB) from industrial-scale end-of-life tires (ELTs) pyrolysis to activated carbons: Material characterization and CO2 capture abilities

Environmental Research, Journal Year: 2024, Volume and Issue: 247, P. 118169 - 118169

Published: Jan. 18, 2024

The current study presents for the first time how recovered carbon black (rCB) obtained directly from industrial-scale end-of-life tires (ELTs) pyrolysis sector is applied as a precursor activated carbons (ACs) with application in CO2 capture. rCB shows better physical characteristics, including density and structure, well chemical properties, such consistent composition low impurity concentration, comparison to pyrolytic char. Potassium hydroxide air combination heat treatment (500–900 °C) were agents conventional activation of material. ACs tested their potential capture CO2. Ultimate proximate analysis, Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy energy dispersive X-ray (SEM-EDS), Raman spectroscopy, thermogravimetric analysis (TGA), N2/CO2 adsorption isotherms used material characterization methods. Analysis revealed that KOH-activated at 900 °C (AC-900K) exhibited highest surface area pore volume increased 6 3 times compared pristine rCB. Moreover, AC-900K possessed well-developed dual porosity, corresponding 22% 78% micropore mesopore volume, respectively. At 0 25 °C, also showed capacity equal 30.90 cm3/g 20.53 1 bar, along stable cyclic regeneration after 10 cycles. high dependence uptake on width below 0.7–0.8 nm was identified. selectivity towards relation N2 reached values 350.91 (CO2/N2 binary mixture) 59.70 (15% CO2/85% N2).

Language: Английский

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Zn-MOF as a Single Catalyst with Dual Lewis Acidic and Basic Reaction Sites for CO₂ Fixation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(8), P. 3757 - 3768

Published: Feb. 14, 2024

Continuous increase in carbon dioxide (CO2) emissions are causing imbalances the environment, which impact biodiversity and human health. The conversion of CO2 to cyclic carbonates by means metal–organic frameworks (MOFs) as a heterogeneous catalyst is prominent strategy for rectifying this imbalance. Herein, we have developed nitrogen-rich Zn (II) based framework, [Zn(CPMT)(bipy)]n (CPMT = 1-(4-carboxyphenyl)-5-mercapto-1H-tetrazole; bipy 4,4′-bipyridine), synthesized via mixed ligand strategy. This Zn-MOF showed high chemical stability both acidic basic conditions, organic solvents long time. On account concurrent presence acid–base active sites strong under abrasive was employed an effective coupling epoxides, atmospheric pressure, mild temperature, neat conditions. shows remarkable activity producing yields epichlorohydrin carbonate (98%) styrene (82%) at 70 °C 24 h reaction time, with turnover numbers (TON) 217 181, respectively. could be reused up seven cycles structural framework integrity. Overall, work demonstrates synthesis novel highly efficient MOF conversion.

Language: Английский

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