Advances in the use of CO₂as a renewable feedstock for the synthesis of polymers

Chemical Society Reviews, Год журнала: 2019, Номер 48(16), С. 4466 - 4514

Опубликована: Янв. 1, 2019

Carbon dioxide offers an accessible, cheap and renewable carbon feedstock for synthesis. Current interest in the area of valorisation aims at new, emerging technologies that are able to provide new opportunities turn a waste into value. Polymers among most widely produced chemicals world greatly affecting quality life. However, there growing concerns about lack reuse majority consumer plastics their after-life disposal resulting increasing demand sustainable alternatives. New monomers polymers can address these issues therefore warranted, merging polymer synthesis with recycling tangible route transition towards circular economy. Here, overview relevant recent approaches CO2-based highlighted particular emphasis on transformation routes used involved manifolds.

Язык: Английский

---

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

Green Chemistry, Год журнала: 2020, Номер 23(1), С. 77 - 118

Опубликована: Дек. 8, 2020

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

Язык: Английский

---

The Comparison between Single Atom Catalysis and Surface Organometallic Catalysis

Chemical Reviews, Год журнала: 2019, Номер 120(2), С. 734 - 813

Опубликована: Окт. 15, 2019

Single atom catalysis (SAC) is a recent discipline of heterogeneous for which single on surface able to carry out various catalytic reactions. A kind revolution in by metals it was assumed that specific sites or defects nanoparticle were necessary activate substrates In another extreme the spectrum, organometallic chemistry (SOMC), and, extension, (SOMCat), have demonstrated atoms surface, but this time with ligands, could lead more predictive approach catalysis. The character SOMCat just result intuitive mechanisms derived from elementary steps molecular chemistry. This review article will compare aspects and considering several reactions, some exist both fields, whereas others might see mutual overlap future. After definition domains, detailed methods, mostly modeling spectroscopy, be followed analysis reactions: hydrogenation, dehydrogenation, hydrogenolysis, oxidative alkane cycloalkane metathesis, methane activation, metathetic oxidation, CO2 activation cyclic carbonates, imine selective reduction (SCR) prospective resulting present knowledge showing emergence new between two areas.

Язык: Английский

---

Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO₂ Utilization

ChemSusChem, Год журнала: 2018, Номер 12(4), С. 724 - 754

Опубликована: Дек. 19, 2018

Abstract Given the large amount of anthropogenic CO 2 emissions, it is advantageous to use as feedstock for fabrication everyday products, such fuels and materials. An attractive way in synthesis polymers by formation five‐membered cyclic organic carbonate monomers (5CCs). The sustainability this synthetic approach increased using scaffolds prepared from renewable resources. Indeed, recent years have seen rise various types syntheses applications. 5CC are often polymerized with diamines yield polyhydroxyurethanes (PHU). Foams developed type polymers; moreover, additional hydroxyl groups PHU, absent classical polyurethanes, lead coatings excellent adhesive properties. Furthermore, offer possibility post‐functionalization, curing reactions under mild conditions. Finally, polarity remarkably high, so carbonates side‐chains can be used polymer electrolytes batteries or conductive membranes. target Review highlight multiple opportunities offered and/or containing 5CCs. Firstly, preparation several classes 5CCs discussed special focus on routes. Thereafter, specific which presence moieties crucial impart targeted properties (foams, adhesives, energy applications, other functional materials).

Язык: Английский

---

Recent progress in the catalytic transformation of carbon dioxide into biosourced organic carbonates

Green Chemistry, Год журнала: 2021, Номер 23(3), С. 1077 - 1113

Опубликована: Янв. 1, 2021

The recent advances made in the catalytic preparation of biobased cyclic carbonates derived from sugars, glycerol, fatty acids/vegetable oils and terpenes are presented, together with a discussion surrounding their potential applications.

Язык: Английский

---

Recent progress in CO₂ conversion into organic chemicals by molecular catalysis

Green Chemistry, Год журнала: 2023, Номер 25(17), С. 6538 - 6560

Опубликована: Янв. 1, 2023

An activation toolbox for the effective catalytic conversion of CO 2 to chemicals is proposed along with challenges and prospects related future development this exciting technology.

Язык: Английский

---

Triarylborane-Catalyzed Formation of Cyclic Organic Carbonates and Polycarbonates

ACS Catalysis, Год журнала: 2019, Номер 9(3), С. 1799 - 1809

Опубликована: Янв. 17, 2019

Effective utilization of carbon dioxide as a C1 feedstock is an ongoing challenge for chemists. The catalytic reaction epoxides and to produce cyclic or polycarbonates has become important that continues be dominated by metal-based catalysts. Metal-free catalysts have shown promise alternative these transformations, but this area remains quite underdeveloped. In work, we show arylboranes, BPh3 B(C6F5)3, can used catalysts, in the presence suitable cocatalyst preformed Lewis acid/base adduct, prepare either organic carbonate [e.g., turnover number (TON) 2960 was obtained propylene oxide carbonate] polycarbonate product (e.g., copolymerization vinylcyclohexene gave with 99+% linkages, Mn 6270 g mol–1, Đ 1.03). Selectivity toward polymer dependent on substrate used. Lower activity observed using B(C6F5)3 due its increased acidity. Kinetic studies "metal-free" reveal process first-order all reagents surprising exception dioxide, which inverse dependence discovered. This means reactions performed at atmospheric pressure (TON 3960 glycidyl chloride PCO2 1 atm). terms formation, when bicyclic epoxide containing vinyl functional group employed substrate, functionality could cross-linked (both intra- intermolecularly) part monomer, leading Tg values 184 122 °C, respectively. These data highlight wide range sustainable, materials produced modest pressures arylborane reactivity modified adjustment electronics potentially sterics.

Язык: Английский

---

Ordered Porous Poly(ionic liquid) Crystallines: Spacing Confined Ionic Surface Enhancing Selective CO₂ Capture and Fixation

ACS Applied Materials & Interfaces, Год журнала: 2019, Номер 11(6), С. 6031 - 6041

Опубликована: Янв. 16, 2019

Porous poly(ionic liquid)s (PPILs) combine the features of porous materials, polymers, and ionic liquids (ILs) or their derivatives, but they are normally amorphous structure with disordered pores. Here, we report facile synthesis ordered liquid) crystallines (OPICs, specialized as a kind PPIL analogues) diverse adjustable framework IL moieties through Schiff base condensation IL-derived salts neutral monomers. Ternary monomer mixtures employed to artistically control chemical composition pore configurations. Compact atomic packing was achieved give spacing confined surface strong CO2 affinity. Through control, OPICs exhibit high uptakes excellent CO2/N2(CH4) selectivities efficiently implement fixation catalyzing epoxides cycloaddition under down ambient conditions.

Язык: Английский

---

Hemisquaramide Tweezers as Organocatalysts: Synthesis of Cyclic Carbonates from Epoxides and CO₂

Organic Letters, Год журнала: 2019, Номер 21(5), С. 1397 - 1401

Опубликована: Фев. 14, 2019

Hemisquaramide tweezers, a new family of H-bond donor organocatalysts, are reported. The catalysts could be synthesized within two steps. Among them, H8-binaphthyl-linked hemisquaramide 7 markedly accelerated the synthesis cyclic carbonates from epoxides and CO2. reactions proceeded well under mild solvent-free conditions. Kinetic resolution was also achieved at −20 °C (s = 3.0). adjustable bite angle orientation NH groups important for high activity.

Язык: Английский

---

Atmospheric pressure conversion of carbon dioxide to cyclic carbonates using a metal-free Lewis acid-base bifunctional heterogeneous catalyst

Journal of CO2 Utilization, Год журнала: 2021, Номер 51, С. 101646 - 101646

Опубликована: Июль 15, 2021

Язык: Английский

---