Ultra dispersed cobalt anchored on nitrogen-doping ordered porous carbon as an efficient transfer hydrogenation catalyst

Zhang, Longkang; Wang, Junmin; Shang, Ningzhao; Gao, Shutao; Gao, Yongjun; Wang, Chun

doi:10.1016/j.apsusc.2019.06.005

Cited by 29 publications

(15 citation statements)

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“…As such, the mechanisms of both reactions may be similar. Hydrogenation of 4‐nitroaniline using boranes generally follow either a tandem reduction pathway, [65–70] or a transfer hydrogenation pathway [62,71–73] . A tandem hydrogenation first produces hydrogen, which is then used as reductant in an ensuing reaction [38,66,74] .…”

Section: Resultsmentioning

confidence: 99%

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

et al. 2021

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MAX phases are gaining increased interest in catalysis, typically for high‐temperature applications. They can also be delaminated into 2D‐structures, so‐called MXenes, enabling better accessibility and the tuning of active site surroundings. Here we present an analogous yet different approach, using an alkaline treatment to prepare a Ti3(Al0.8Sn0.2)C2 MAX phase derivative, with an open, disordered structure. This new material, which is missing most of the larger interlayer spacing, is a good support for ruthenium particles (1.6 nm diameter). Ru on disordered MAX phase catalyses both ammonia borane hydrolysis (TOF=582 min−1, 30 °C) and the reduction of 4‐nitroaniline (TOF=13 min−1, 45 °C). Using the former as a benchmark reaction, we show that the open disordered structure of the support promotes catalytic activity. The boost in reactivity is related to a metal‐support interaction, improving the activity of metallic ruthenium. We also show here, for the first time, that supported Ru is a good catalyst for reducing nitroaniline with ammonia borane. Overall, our results reveal that disordered MAX‐derivatives are promising as catalyst supports, owing to their potential for tuning the electronic properties at the metal active sites.

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Section: Resultsmentioning

confidence: 99%

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

et al. 2021

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“…Zhang et al [159] . conducted a sacrificial‐template pyrolysis method to synthesize N‐doped ordered porous carbon with ultra‐dispersed cobalt anchored on the surface.…”

Section: Applications In Hydrogenation Reactionsmentioning

confidence: 99%

Preparation of Heteroatom‐Doped Carbon Materials and Applications in Selective Hydrogenation

Zhang

Zhou

et al. 2022

ChemistrySelect

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Heteroatom‐doping of carbon materials has gained much attention recent decades since it was believed to be a brilliant strategy to endow carbon with enhanced physical and chemical properties. In addition, the doped carbon has been frequently employed in various fields such as supercapacitors, batteries, catalytic hydrogenation reactions due to its unique structure and superior features, among which selective hydrogenation is an essential procedure during organic synthesis and has wide industrial applications. It is proved that the incorporation of heteroatoms could have a great effect on the original carbon, such as charge distribution and surface defects, which could further influence the electronic effect and physical interaction between carbon carrier and supported metal, thereby enhance its catalytic performance in hydrogenation reactions. Herein, we briefly reviewed recent progress in the effect of heteroatoms on carbon properties. Meanwhile, the synthesis strategies of doped‐carbon and the application of these catalysts in series of hydrogenation reactions were also summarized.

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“…A sacrificial‐template‐assisted pyrolysis approach was designed by Gao and coworkers for the synthesis of cobalt anchored on nitrogen‐riched porous carbon (CoN@PCN) as a non‐noble heterogeneous catalyst which its fabrication process involved the infiltration of the pores of the SBA‐15 template with the complex of cobalt(II) nitrate hexahydrate‐1, 10‐phenanthroline (the introduction of the complex of cobalt(II) nitrate hexahydrate‐1, 10‐phenanthroline into the SBA‐15 template pores), pyrolyzing the resultant material at 800 °C, and finally etching the SBA‐15 from the pyrolyzed product via NaOH solution (Figure 21). [105] Due to the strong coordination effect of Co with phenanthroline as well as the confinement effect of template, Co was highly dispersed on the surface of the support. The utility of the CoN@PCN was explored for the hydrogenation of nitroarenes to the relevant anilines under mild reaction conditions using ammonia‐borane (AB) as a hydrogen donor (Scheme 32).…”

Section: Heteroatom‐doped Porous Carbon/metal Catalystsmentioning

confidence: 99%

Recent Advances on Heteroatom‐Doped Porous Carbon/Metal Materials: Fascinating Heterogeneous Catalysts for Organic Transformations

Rangraz

Heravi

Elhampour³

2021

The Chemical Record

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Design and preparation of low‐cost, effective, and novel catalysts are important topics in the field of heterogeneous catalysis from academic and industrial perspectives. Recently, heteroatom‐doped porous carbon/metal materials have received significant attention as promising catalysts in divergent organic reactions. Incorporation of heteroatom into the carbon framework can tailor the properties of carbon, providing suitable interaction between support and metal, resulting in superior catalytic performance compared with those of traditional pure carbon/metal catalytic systems. In this review, we try to underscore the recent advances in the design, preparation, and application of heteroatom‐doped porous carbon/metal catalysts towards various organic transformations.

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Ultra dispersed cobalt anchored on nitrogen-doping ordered porous carbon as an efficient transfer hydrogenation catalyst

Cited by 29 publications

References 50 publications

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

Preparation of Heteroatom‐Doped Carbon Materials and Applications in Selective Hydrogenation

Recent Advances on Heteroatom‐Doped Porous Carbon/Metal Materials: Fascinating Heterogeneous Catalysts for Organic Transformations

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Ultra dispersed cobalt anchored on nitrogen-doping ordered porous carbon as an efficient transfer hydrogenation catalyst

Cited by 29 publications

References 50 publications

Ruthenium on Alkali‐Exfoliated Ti3(Al0.8Sn0.2)C2 MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

Ruthenium on Alkali‐Exfoliated Ti3(Al0.8Sn0.2)C2 MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

Preparation of Heteroatom‐Doped Carbon Materials and Applications in Selective Hydrogenation

Recent Advances on Heteroatom‐Doped Porous Carbon/Metal Materials: Fascinating Heterogeneous Catalysts for Organic Transformations

Contact Info

Product

Resources

About

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane

Ruthenium on Alkali‐Exfoliated Ti₃(Al_0.8Sn_0.2)C₂ MAX Phase Catalyses Reduction of 4‐Nitroaniline with Ammonia Borane