Iron Single-Atom Catalyzed N-Alkylation of Amines with Alcohols via Solvent-Free Borrowing Hydrogen Strategy.

Industrial hydrogenation is a pivotal process in chemical synthesis. However, it has significant drawbacks, including high cost, safety risks associated with the use of molecular hydrogen gas, and substantial energy demands due to the need for elevated temperatures and pressures to achieve satisfactory yields. The borrowing hydrogen synthesis, which enables the transfer of hydrogen between molecules, offers a promising approach for green, one-pot synthesis of industrially important chemicals and intermediates.

Nitrogen-doped graphene supported ultrasmall manganese oxide nanoparticles for hydrogenation of nitroarenes to aminoarenes.

The accessibility, cost-effectiveness, and stability of catalysts based on 3d transition metals make them highly valuable for both industrial chemical synthesis and organic transformations. Recently, the use of these readily available, and biocompatible metals has garnered considerable interest, particularly in the field of heterogeneous catalysis. However, achieving high catalytic efficiency and mimicking reactivity of noble-metal catalysts often requires additional reagents and toxic solvents.

Iron N-Doped Carbon Nanoarchitectonics for C─H Bond Activation of Methylarenes and Esterification Reactions.

Nowadays, selective oxidation of sp C-H bond in methylarene to benzaldehyde under eco-friendly conditions is a promising way to produce aldehyde derivatives. In this work, scalable iron nanoparticles adorned on surface engineered nitrogen-doped carbon (Fe@NC-BA) fabricated via wet chemistry followed by high-temperature pyrolysis. It is observed that nitrogen-coordinated Fe nanoparticles play a crucial role as active sites in facilitating both the toluene oxidation and esterification reaction due to its nitrogen-rich Fe NPs contain and low C/N ratio in Fe@NC-BA catalyst.

Single-Atom (Iron-Based) Catalysts: Synthesis and Applications.

Supported single-metal atom catalysts (SACs) are constituted of isolated active metal centers, which are heterogenized on inert supports such as graphene, porous carbon, and metal oxides. Their thermal stability, electronic properties, and catalytic activities can be controlled via interactions between the single-metal atom center and neighboring heteroatoms such as nitrogen, oxygen, and sulfur. Due to the atomic dispersion of the active catalytic centers, the amount of metal required for catalysis can be decreased, thus offering new possibilities to control the selectivity of a given transformation as well as to improve catalyst turnover frequencies and turnover numbers.