Construction of highly-dispersed and composition-adjustable CoxN in stable Co@CoxN@C nanocomposite catalysts via a dual-ligand-MOF strategy for the selective hydrogenation of citral

Liu, Yijian; Zhang, Dihui; Li, Xiaochen; Deng, Shaoqiang; Zhao, Dan; Zhang, Ning; Chen, Chao

doi:10.1016/j.apsusc.2019.144387

Cited by 13 publications

(8 citation statements)

References 53 publications

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“…Moreover, XPS analysis was performed to confirm the nature of Co species of the active catalyst (Figure j–l). Peaks observed at 778.48, 780.85, and 796.39 eV corresponded to Co 0 and Co–N species, which illustrates that the metal particles were anchored on the inner surface of the shell through coordinated bonds. , In addition, a series of peaks appear at 398.47, 400.40, and 401.57 eV, indicating the presence of pyridinic N and graphitic N in the N-doping graphitic carbon framework …”

Section: Resultsmentioning

confidence: 99%

“…Peaks observed at 778.48, 780.85, and 796.39 eV corresponded to Co 0 and Co−N species, which illustrates that the metal particles were anchored on the inner surface of the shell through coordinated bonds. 32,33 In addition, a series of peaks appear at 398.47, 400.40, and 401.57 eV, indicating the presence of pyridinic N and graphitic N in the N-doping graphitic carbon framework. 34 Considering the successful catalysis for hydrogenation of quinoline, the catalyst was used for the derivatives of quinoline with different functional groups, which are listed in Table 2.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Encapsulating Cobalt into N-Doping Hollow Frameworks for Efficient Cascade Catalysis

et al. 2021

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The development of nonprecious catalysts for hydrogenation of organic molecules is of great importance in heterogeneous catalysis. Herein, we report a series of N-doped hollow carbon frameworks encompassing cobalt nanoparticles (denoted as Co@NHF-900) constructed as a new kind of reusable catalyst for this purpose by pyrolysis of ZIF-8@Co−dopamine under Ar atmospheres. Notably, the framework of ZIF-8 is essential for efficient catalyst by providing a carbon framework to support Co−dopamine. The experimental results reveal that the ZIF-8 renders a large hollow place within the catalysts, allowing the enrichment of the substrate and windows of the hollow structure and the ease of mass transfer of products during the reaction. All of the virtues made Co@NHF-900 a good candidate for hydrogenation of quinolines with high activity (TOF value of 119 h −1 , which is several times than that of akin catalysts) and chemoselectivity.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Encapsulating Cobalt into N-Doping Hollow Frameworks for Efficient Cascade Catalysis

et al. 2021

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“…Furthermore, the derivative materials prepared with MOFs as precursors also have a good chemisorption effect on hydrogen, which can also improve the effect of the hydrogenation reaction. Zhao et al 75 synthesized nano-Co catalysts using dual ligands as precursors. The activation of hydrogen and the speed of the entire reaction depend on the surface of Co.…”

Section: ■ Main Characteristics and Rational Design Of Mof Materials ...mentioning

confidence: 99%

Application of Metal–Organic Framework Materials and Derived Porous Carbon Materials in Catalytic Hydrogenation

Shen

et al. 2020

ACS Sustainable Chem. Eng.

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In the past few decades, metal–organic frameworks (MOFs) have gradually become attractive materials in various fields due to their unique properties (adjustable pore size, large specific surface area, highly ordered structure, uniformly distributed metal nodes, good modifiability). MOF-derived porous carbon materials have also attracted great interest in many application fields due to their adjustable chemical and physical properties. The hydrogenation reaction is an important type of reaction in the chemical industry. The catalysts play an important role in the hydrogenation reaction. In recent years, MOFs and derived porous carbon materials have had extensive application in catalytic hydrogenation reactions. Compared with other traditional catalysts, MOFs and derived porous carbon materials have some unique advantages as hydrogenation catalysts, which are described in this review. In addition, we have expounded the rational design of MOF hydrogenation catalysts from the following four aspects: choosing suitable MOFs with coordinated unsaturated metal sites, good stability, and precise control and optimizing the structure of MOF materials and hydrogen storage characteristics of MOF materials. The application of nitrogen-doped carbon materials and MOF-derived porous carbon materials in hydrogenation reactions has also been compared. Moreover, various MOFs and derived porous carbon materials with excellent performance are discussed in detail in various catalytic hydrogenation reactions including olefins, alkynes, alcohols and phenols, aldehydes, carboxylic acids, esters, nitro compounds, and other hydrogenation reactions. Finally, the challenges of MOFs and derived porous carbon materials as hydrogenation catalysts are objectively summarized, and the application and development trends in catalytic hydrogenation reactions are prospected.

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“…Co@Co x N@C prepared by a dual-ligand MOF pyrolysis strategy with a suitable content of Co x N achieved high selectivity to α,β-unsaturated alcohols. 15 Cu/ CuAl-MMO catalysts gave more than 96% selectivity to furfuryl alcohol in the transfer hydrogenation of furfural. 16 However, non-noble metal catalysts present a relatively low catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Hydrogenation of α,β-Unsaturated Aldehydes to Unsaturated Alcohols over Defective MOF-808 with Constructed Frustrated Lewis Pairs

Zhong,

Liao,

Cui

et al. 2024

ACS Catal.

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Solid frustrated Lewis pair (FLP) catalysts have received much attention. In this work, MOF-808 with rich defects was constructed using a facile monocarboxylic acid modulatorinduced defect strategy and applied in the transfer hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohol using cyclohexanol as the hydrogen source. MOF-808 was prepared from different zirconium precursors, and it was found that MOF-808-ZT obtained from ZrCl 4 and H 3 BTC forms abundant surface hydroxyl groups (Zr−OH, base sites). Moreover, MOF-808-PA with missing linker defects was constructed by introducing monocarboxylic acid to preoccupy the coordination sites of MOF-808-ZT, leading to abundant Zr−OH 2 . The coordinated water molecules are removed by the dehydration of MOF-808-PA at 180 °C, and the underlying coordinatively unsaturated Zr 4+ (Zr-CUS) is exposed and acts as a Lewis acid site. Characterizations and DFT calculations show that the Zr-CUS/Zr−OH FLPs sites can efficiently activate the C�O of aldehydes and −OH of cyclohexanol and reduce their activation energy barrier, thus exhibiting good catalytic performance. Moreover, these FLP sites can easily easily dissociate the H−H bond with a lower activation energy of 0.15 eV, thereby achieving a better catalytic reactivity in the direct hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols. A possible reaction mechanism was proposed based on in situ DRIFT, vacuum FTIR, and DFT calculations.

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Construction of highly-dispersed and composition-adjustable CoxN in stable Co@CoxN@C nanocomposite catalysts via a dual-ligand-MOF strategy for the selective hydrogenation of citral

Cited by 13 publications

References 53 publications

Encapsulating Cobalt into N-Doping Hollow Frameworks for Efficient Cascade Catalysis

Encapsulating Cobalt into N-Doping Hollow Frameworks for Efficient Cascade Catalysis

Application of Metal–Organic Framework Materials and Derived Porous Carbon Materials in Catalytic Hydrogenation

Highly Efficient Hydrogenation of α,β-Unsaturated Aldehydes to Unsaturated Alcohols over Defective MOF-808 with Constructed Frustrated Lewis Pairs

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