Reduction of Aldehydes with Formic acid in Ethanol using Immobilized Iridium Nanoparticles on a Triazine‐phosphanimine Polymeric Organic Support

Abstract

A novel triazine‐phosphanimine polymeric organic support (TPA) was synthesized successfully by a controllable one‐pot method using melamine (1,3,5‐triazine‐2,4,6‐triamine) and trichlorophosphane (PCl3). The TPA substrate is a material incorporating P and N atoms which can coordinate with metals as a pincer ligand to stabilize them, providing an efficient heterogeneous support to prepare recyclable transition metal catalyst systems. In this study, TPA was used as support to immobilize iridium nanoparticles in the range of ~8 nm on its surface, resulting in the generation of a novel iridium nanocatalyst system (INP‐TPA‐POP). This catalyst system was characterized using different microscopic and spectroscopic techniques such as FT‐IR, TEM, XPS, XRD, SEM, EDX, elemental analysis, ICP and BET analysis. The INP‐TPA‐POP nanocatalyst exhibited remarkable activity in reduction of aldehydes to alcohols using formic acids as reducing agent in ethanol as solvent.

Metallic active-site engineering: a bridge between covalent triazine frameworks and high-performance catalysts

“…This investigation elaborated the enhanced mechanism of M/CTF composites from the perspective of metal-CTF interaction again. An analogous mechanism explanation was given for Ru/CTF-1 over ammonia decomposition, 74 Ag@TATF-COM for nitroaromatics hydrogenation, 75 Ir-TPA-POP for aldehyde hydrogenation, 76 Pd-TA-COF for dehydrogenation of formic acid, 77 and Pt/Pd NPs@COF for the Suzuki–Miyaura coupling reaction. 36 However, interaction between metal centers and CTFs as well as an enhanced mechanism in one specific reaction remain unclear, which inspires further research interest.…”

Nickel Nanoparticles Immobilized on a Porous Triazine-Thiourea-Sulfonamide as an Efficient Heterogeneous Catalyst for Reduction of Carbonyl Compounds

“…toxic and expensive reagents removal, minimization of by-products, and simplifying of workup procedures) are particularly important factors in uencing the e ciency of the organic reaction 1 . Among the signi cant novel synthetic protocols developed in organic chemistry, the selective reduction of aldehydes and ketones to alchohol is most interesting one 2 . Alcohols can be converted to the various valuable chemicals using etheri cation, condensation, esteri cation, and oxidation [3][4][5] .…”