Efficient Pd@MIL-101(Cr) hetero-catalysts for 2-butyne-1,4-diol hydrogenation exhibiting high selectivity

Abstract

An efficient Pd@MIL-101(Cr) catalyst prepared with MOCVD approach for 2-butyne-1,4-diol hydrogenation with excellent activity, stability and selectivity.

Hybridization of Pd Nanoparticles with UiO‐66(Hf) Metal‐Organic Framework and the Effect of Nanostructure on the Catalytic Properties

“…These catalysts have been majorly studied for the hydrogenation reactions. The advantage of MOF hybridization with Pd NPs is demonstrated in systems such as Pd‐NH 2 ‐MIL‐101(Al), Pd‐UiO‐67, Pd‐IRMOF‐3, Pd‐MOF‐5,, Pd‐MIL‐101(Cr),, Pd‐HKSUT‐1 and Pd‐MIL‐101(Fe) hybrid materials . In this study, we fabricated Pd@UiO‐66(Hf) core–shell catalyst wherein NPs are embedded inside MOF matrix and Pd/UiO‐66(Hf) supported catalyst having Pd NPs exclusively supported on the external surface of MOF.…”

Metal–Organic Framework Supported Palladium Nanoparticles: Applications and Mechanisms

“…Reaction network for 2‐butyne‐1, 4‐diol hydrogenation by Pd NPs/MOFs using H 2 . Reproduced with permission . Copyright 2017, Royal Society of Chemistry.…”

“…The roles of Pd NPs are to 1) dissociate H 2 into hydrogen atoms and 2) facilitate the formation of saturated or sub‐saturated compounds. In the past decades, catalytic hydrogenation of 2‐butyne‐1,4‐diol (BYD) to 2‐butene‐1,4‐diol (BED) and 1,4‐butane‐diol (BDO), especially partial hydrogenation to BED is attracting industrial interest because BED are widely applied in paper, textile, and polymer manufacturing 22a,23. As shown in Figure , BYD is first hydrogenated to produce BED, and then instantaneously adsorbed on to the Pd NP surface sites to further be hydrogenated to form BDO simultaneously, and various by‐products such as 4‐hydroxybutyraldehyde, crotyl alcohol, and butanal, and butanol are inevitably generated .…”

“…It has been proved that MOFs can regulate the catalytic properties of encapsulated metal NPs because the aromatic backbone of MOFs can particularly interact weakly with embedded metal NPs through coordination and π‐π forces, which trigger the enhanced stability/activity performance of metal NPs by affecting the charge transfers 17a. Yin et al and Isaeva et al22a found that the Pd NPs could be successfully embedded in the cavities of MOFs (e.g., MIL‐101(Cr)) and 3D metal–organic framework MOF‐5 (e.g., Zn 4 O(BDC) 3 ). The as‐synthesized Pd@ MIL‐101(Cr) and Pd/Zn 4 O(BDC) 3 exhibited excellent activity in partial hydrogenation of BYD to BED and the selectivity of BED with nearly complete consumption of BYD reached 94% and 97%, respectively.…”

Bimetallic Au–Pd alloy nanoparticles supported on MIL-101(Cr) as highly efficient catalysts for selective hydrogenation of 1,3-butadiene

“…[52][53][54] These properties have enabled MIL-101(Cr) to be successfully applied in various elds, including its particularly attractive use as a supports for heterogeneous catalyst. [55][56][57][58][59][60][61][62][63][64] Recently, various metal nanoparticle (NP) catalysts supported on MIL-101(Cr) (NPs/MIL-101(Cr)), such as Au/MIL-101(Cr), 59 Pd/MIL-101(Cr), 65 Ru/MIL-101(Cr), 66 and Pt/MIL-101(Cr), 67,68 have been tested for the hydrogenation catalytic reaction. These researches have exhibited promising results in the hydrogenation of 4-nitrophenol, 59 2-butyne-1,4-diol, 65 levulinic acid, 66 cinnamaldehyde, 67 benzaldehydes, 68 and nitrobenzenes 68 with superior catalytic activity, selectivity, and stability.…”