Research Progress in Epoxidation of Light Small-Molecule Olefins

Molecules, Journal Year: 2025, Volume and Issue: 30(6), P. 1340 - 1340

Published: March 17, 2025

Light olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role development of manufacturing industry and economy. The epoxides light olefins are intermediates for synthesis polymers, drugs, fine chemicals, their green, efficient, safe has attracted much attention. This review focuses on research progress olefin epoxidation elucidates traditional methods, such chlorohydrin method. Although these processes have mature processes, they drawbacks, including equipment corrosion, environmental pollution, poor safety, high waste emissions. Special emphasis is placed catalytic systems using oxygen or organic peroxides sources. For homogeneous systems, certain metal complexes exhibit activity selectivity yet difficult to separate recycle. Moreover, heterogeneous become a hotspot due advantages easy separation reusability, with supported catalysts being prime example. Meanwhile, effects reaction temperature, pressure, solvent, etc., explored. specific mechanisms also studied analyzed. Current challenges, enhancing catalyst stability reducing costs, summarized. In future, developing highly economically viable technologies large-scale industrial applications represents direction this field.

Language: Английский

---

Engineering oxide speciation in CoMnOx catalysts for achieving an ideal selective oxidation of benzyl alcohol at room temperature with atmospheric pressure air

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137369 - 137369

Published: March 1, 2025

Language: Английский

---

Highly efficient and stable single-atom Cu encapsulated in silicalite-1 zeolite for selective catalytic oxidation of nitrogen-containing VOCs

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125277 - 125277

Published: March 1, 2025

Language: Английский

---

Few-Atom Copper Cluster Facilitates H₂O₂ Activation to Promote Selective Oxidation of Benzene to Phenol

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

The catalytic oxidation of benzene faces challenges in achieving high activity and selectivity. While single-atom catalysts present intriguing potential for this transformation, their practical implementation is hindered by intrinsic limitations the mass-specific activity. In context, few-atom cluster have emerged as an alternative, leveraging well-defined metal ensemble effects that enable precisely tailored active sites enhanced interatomic synergies. Herein, we introduce atomic supported on a graphitic carbonitride (CN) catalyst (Cu3/CN), exhibiting excellent performance selective to phenol, with superior turnover frequency (TOF) Cu1/CN (719 h-1 vs 280 h-1) suppressing phenol selectivity nanoparticle CuNP/CN (95.3% 77.2%). Multimodal mechanistic investigations unambiguously identify critical role adsorbed O* Cu site (Cu═O*) C-H-oxidation, verified both situ spectroscopic monitoring ex surface analysis. Complementary density functional theory calculations validate (Cu3) features higher d-band center larger charge transfer H2O2 molecule than isolated Cu1 site. sufficient stretches O-O bond facilitate formation Cu═O* species. Furthermore, resulting Cu3 demonstrates significant hybridization O 2p orbitals 3d at Fermi level, which endows it activation. appropriate effect unique architecture key its performances. This work establishes structure-performance correlation highlights optimizing functionality.

Language: Английский

---

Single atom manganese catalyst boosting selective oxidation of alcohols with activated peroxymonosulfate

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 656, P. 58 - 67

Published: Nov. 15, 2023

Language: Английский

---