Liu, Qinglin; Liu, Qian; Chen, Yurong; Li, Yinle; Su, Hui; Liu, Qinghua; Li, Guangqin published the artcile< Ir nanoclusters confined within hollow MIL-101(Fe) for selective hydrogenation of α,β-unsaturated aldehyde>, Formula: C9H7BrO, the main research area is MIL 101 Fe support iridium nanocatalyst preparation surface area; alkenyl aldehyde iridium catalyst selective hydrogenation; unsaturated alchol preparation.
Although the selective hydrogenation of α,β-unsaturated aldehyde to unsaturated alc. (UOL) is an extremely important transformation, it is still a great challenge to achieve high selectivity to UOL due to thermodn. favoring of the C=C hydrogenation over the C=O hydrogenation. Herein, iridium nanoclusters (Ir NCs) confined within hollow MIL-101(Fe) expresses satisfied reaction activity (93.9%) and high selectivity (96.2%) for the hydrogenation of cinnamaldehyde (CAL) to cinnamyl alc. (COL) under 1 bar H2 atmosphere and room temp were reported. The unique hollow structure of MIL-101(Fe) benefited for the fast transport of reactant, ensuring the comparable reaction activity and better recyclability of Ir@MIL-101(Fe) than the counterparts which Ir NCs were on the surface of MIL-101(Fe). Furthermore, the XPS data indicatds the electropos. Ir NCs, owing to the electron transfer from Ir to MIL-101(Fe), can interact with oxygen lone pairs and Fourier transform IR spectrum showed the Lewis acid sites in MIL-101(Fe) can strongly interact with C=O bond, which contributed to a high selectivity for COL. This work suggested the considerable potential of synergetic effect between hollow MOFs and metal nanoclusters for selective hydrogenation reactions.
Chinese Chemical Letters published new progress about Alcohols, unsaturated Role: SPN (Synthetic Preparation), PREP (Preparation). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary