Organic and Metal–Organic Polymer-Based Catalysts—Enfant Terrible Companions or Good Assistants?

Molecules, Journal Year: 2024, Volume and Issue: 29(19), P. 4623 - 4623

Published: Sept. 29, 2024

This overview provides insights into organic and metal–organic polymer (OMOP) catalysts aimed at processes carried out in the liquid phase. Various types of polymers are discussed, including vinyl (various functional poly(styrene-co-divinylbenzene) perfluorinated functionalized hydrocarbons, e.g., Nafion), condensation (polyesters, -amides, -anilines, -imides), additional (polyurethanes, polyureas, polybenzimidazoles, polyporphyrins), prepared from organometal monomers. Covalent frameworks (COFs), (MOFs), their composites represent a significant class OMOP catalysts. Following this, preparation, characterization, application dispersed metal discussed. Key catalytic such as alkylation—used large-scale applications like production alkyl-tert-butyl ether bisphenol A—as well reduction, oxidation, other reactions, highlighted. The versatile properties COFs MOFs, well-defined nanometer-scale pores, large surface areas, excellent chemisorption capabilities, make them highly promising for chemical, electrochemical, photocatalytic applications. Particular emphasis is placed on potential CO2 treatment. However, notable drawback COF- MOF-based relatively low stability both alkaline acidic environments, high cost. A special part devoted to deactivation disposal used/deactivated catalysts, emphasizing importance separating heavy metals conclusion guidance selecting developing OMOP-based

Language: Английский

Selective Deep Hydrogenation of Acenaphthene to High‐Density Fuel On Supported Ru Catalysts: The Role of Strong Metal‐Support Interaction

ChemNanoMat, Journal Year: 2024, Volume and Issue: 10(7)

Published: April 25, 2024

Abstract Developing high‐performance aviation fuel is highly desired for the rapid development of supersonic aircraft. Herein, selective deep hydrogenation polycyclic aromatics to a high‐density developed over Ru‐based catalyst. The influences strong Ru‐support interaction on tailoring reaction pathways acenaphthene were investigated using different oxide supports (SiO 2 , CeO TiO ). Ru/CeO and Ru/TiO with SMSI possess abundant electron‐deficient Ru δ+ species which exhibit good ability promote H dissociation increase isomerization rate saturated aromatic compounds. Due enhanced adsorption molecules, (1.30 μmol min −1 g ) exhibits superior catalytic activity in comparison (1.25 during hydrosaturation, while highest (7.60×10 −2 because its excellent hydrogen spillover high content species. best 96 % selectivity ccc ‐perhydroacenaphthene was achieved an mechanism perhydroacenaphthene isomers proposed.

Language: Английский

Molded Nanoporous Ni Catalysts with High Active Metal Utilization for CO₂ Methanation

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(52), P. 18648 - 18656

Published: Nov. 25, 2024

Language: Английский