C4C recent developments: carbonaceous-supported catalysts for CO2 conversion into cyclic carbonates

Carbon Research, Год журнала: 2025, Номер 4(1)

Опубликована: Фев. 17, 2025

Abstract The conversion of CO 2 into value-added chemicals and fuels is one the potential approaches to deal with environmental issues caused by increasing carbon dioxide concentration in atmosphere. can be transformed a variety valuable products, including but not limited monoxide, cyclic carbonates, formic acid, methanol, methane, ethanol, acetic propanol, light olefins, aromatics, gasoline through thermal catalysis, electrocatalysis, photo(electro)catalysis. In ongoing search for new catalytic conversions, utilization carbon-based materials as catalyst supports demonstrates improvement performance. This because unique features carbonaceous supports, such tunable porous structure, high specific surface area, good chemical stability, excellent conductivity. Though there are other strategies chemicals, cycloaddition, methanation, hydrogenation, photocatalysis, five-membered carbonates has garnered significant attention its address concerns reduce reliance on fossil fuels; however, it faces considerable challenges due thermodynamic stability . To these issues, this review particularly presents recent advancements fixation carbonate using carbonaceous-supported systems viz. graphitic nitride, graphene, nanotubes, nanofiber, activated carbon, sphere, that provide advantages structures, areas, stability. Furthermore, easily modified introducing defects or heteroatoms enhance their provides information current research, development trends, necessary path expedite technological technologies terms materials, various experimental conditions employed reactions. important role molecular process modeling implementing at commercial scale also highlighted. aims demonstrate catalysts improve efficiency production, thereby contributing more sustainable processes. Graphical

Язык: Английский

---

Insights into the catalytic application of coordinated metal complexes in CO2 conversion via cycloaddition

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 142200 - 142200

Опубликована: Март 1, 2025

Язык: Английский

---

Amine–MeOH Binary Systems as Catalysts for Cyclic Carbonate Formation from Epoxides and Carbon Dioxide: A DFT Mechanistic Investigation

The Journal of Organic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

The detailed mechanism of propylene carbonate (PC) formation from oxide (PO) and CO2 is investigated using density functional theory (DFT) methods, catalyzed by amine/MeOH binary systems, in under conditions room temperature 1 atm. In these amines (MeNH2, Me2NH, Me3N, pyrrolidine) serve as nucleophiles, while MeOH acts a hydrogen bond donor (HBD). reaction pathways for PC consistently proceed through two transition states, ts1 ts2, corresponding to the ring-opening final ring-closing steps, respectively. step was identified rate-determining all systems. Notably, three aliphatic systems significantly lower activation barriers approximately 20 kcal mol-1 compared uncatalyzed pathway standard conditions. Me2NH/MeOH system demonstrates slightly higher catalytic efficiency than MeNH2 Me3N Furthermore, pyrrolidine/MeOH exhibits comparable performance system. Since pyrrolidine liquid conditions, it can act homogeneous catalyst when paired with MeOH, enhancing mixing PO improving activity relative gaseous Me2NH.

Язык: Английский

---

Highly Efficient CO₂ Fixation Into Cyclic Carbonates Catalyzed by Imidazolium‐Functionalized Zn‐Based MOFs

Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(5)

Опубликована: Апрель 9, 2025

ABSTRACT The coupling between epoxide and carbon dioxide into cyclic carbonates in the absence of co‐catalyst solvents is a feasible strategy for removing CO 2 from atmosphere achieving carbon‐neutral cycle. In this context, two new bifunctional catalytic systems prepared by modification metal–organic frameworks (MOFs) with ionic liquids (ILs) activities have been compared converting carbonates. IL methylimidazolium bromide (MI‐Br) grafted both Zn‐MOF‐NH Zn 3 (L) (H L) MOF to produce dual‐functional one‐component high density Lewis acidic Zn(II) metal sites functional carry out co‐catalyst/solvent‐free cycloaddition epoxides. characteristics MI‐Br IL@MOFs were revealed via different techniques, including FE‐SEM, EDX, FT‐IR, XRD, N adsorption, NH ‐TPD, ICP‐OES. Further, efficient catalysts act as excellent recyclable 4 successive cycles without substantial loss activity epoxides Herein, synergistic mechanism Br − ions proposed under conditions.

Язык: Английский

---

A highly stable zinc phosphonate for efficient heterogeneous catalytic CO2 cycloaddition and ring-opening reaction

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116468 - 116468

Опубликована: Апрель 1, 2025

Язык: Английский

---