A stable Cu-polyatomic-cluster catalyst: Critical for methanol reforming deNOx at mild temperature

Zhang, Hao; Zhou, Jiacheng; Sun, Wei; Ma, Linghui; Cao, Limei; Yang, Jie

doi:10.1016/j.apsusc.2021.150321

Cited by 6 publications

(2 citation statements)

References 53 publications

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“…Figure 2(b), (f) show Cu‐BTC‐derived Cu/CuO x @C catalysts calcined at 350 ~ 600°C. Some parts of Cu/CuO x @C catalysts obtained at various calcination temperatures retained the octahedral morphology of the precursor, and most of their structures collapsed because the organic framework's oxygen atoms were lost in the nitrogen atmosphere, leaving Cu clusters fixed by C. Otherwise, with the burning and consumption of carbon, the Cu bulk phase encapsulated by carbon films was gradually exposed and uniformly adhered to the octahedron surface, so the octahedral surface became rough 36 …”

Section: Resultsmentioning

confidence: 99%

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Wang

Suo

et al. 2022

J of Chemical Tech & Biotech

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Background Catalytic transfer hydrogenation has been increasingly employed as an effective and safe method for biomass upgrading; however, relying on biomass‐derived formic acid (FA) as hydrogen source has rarely been studied, especially in the production of furfuryl alcohol (FOL) from biomass‐derived furfural (FF) via selective hydrogenation, which is challenging due to diverse unsaturated groups. Herein, in situ encapsulation and stabilization of Cu/CuOx in a porous carbon matrix (Cu/CuOx@C) was reported for the first time and applied in the hydrogenation of FF to FOL with FA. Results Various analytical techniques were used to characterize the effect of pyrolysis temperature on Cu/CuOx@C, since the temperature can be adjusted to control the reduction of the catalyst to give different Cu0/Cun+ ratios. The optimal catalyst Cu/CuOx@C‐450 gave a 99.1% FF conversion and 98% FOL selectivity under suitable reaction conditions, exhibiting excellent activity that was even better than those of noble metal catalysts. Further, density functional theory calculations were used to reveal the effect of Cu species on FA decomposition and final catalytic performance. Conclusion The catalytic activity of Cu/CuOx@C was influenced by the pyrolysis temperature of the catalyst precursor, and its good performance was mainly attributed to a high dispersion of accessible catalytic Cu/CuOx nanoparticles on the porous carbon and to an appropriate Cu0/Cun+ ratio. © 2022 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Wang

Suo

et al. 2022

J of Chemical Tech & Biotech

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“…By using COF with metal chelating sites and an ordered porous structure as a support, the migration agglomeration of Cu ions during pyrolysis was limited and a homogeneous distribution of Cu nanoclusters was achieved. Xie et al [59] prepared Cu-based MACCs (Cu x /C-MnPdOy@Ni) by high-temperature pyrolysis using MOFs as supports. The stable structure of the MOFs fixed the position of the Cu clusters, and after the high-temperature pyrolysis, the MOFs could expose more unsaturated sites, which led to the improvement of the catalytic activity.…”

Section: High-temperature Pyrolysis Methodsmentioning

confidence: 99%

Atomic‐Level Regulation of Cu‐Based Electrocatalyst for Enhancing Oxygen Reduction Reaction: From Single Atoms to Polymetallic Active Sites

Zhang,

Li,

Zeng

et al. 2023

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The slow kinetics of cathodic oxygen reduction reactions (ORR) in fuel cells and the high cost of commercial Pt‐based catalysts limit their large‐scale application. Cu‐based single‐atom catalysts (SACs) have received increasing attention as a promising ORR catalyst due to their high atom utilization, high thermodynamic activity, adjustable electronic structure, and low cost. Herein, the recent research progress of Cu‐based catalysts is reviewed from single atom to polymetallic active sites for ORR. First, the design and synthesis method of Cu‐based SACs are summarized. Then the atomic‐level structure regulation strategy of Cu‐based catalyst is proposed to improve the ORR performance. The different ORR catalytic mechanism based on the different Cu active sites is further revealed. Finally, the design principle of high‐performance Cu‐based SACs is proposed for ORR and the opportunities and challenges are further prospected.

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Highly reactive methyl group drives selective catalytic reduction of NOx by methanol on bismuth oxide nanoparticle implanted FER zeolite

Sun

Han

Sun

et al. 2022

Applied Catalysis B: Environmental

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A stable Cu-polyatomic-cluster catalyst: Critical for methanol reforming deNOx at mild temperature

Cited by 6 publications

References 53 publications

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Atomic‐Level Regulation of Cu‐Based Electrocatalyst for Enhancing Oxygen Reduction Reaction: From Single Atoms to Polymetallic Active Sites

Highly reactive methyl group drives selective catalytic reduction of NOx by methanol on bismuth oxide nanoparticle implanted FER zeolite

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A stable Cu-polyatomic-cluster catalyst: Critical for methanol reforming deNOx at mild temperature

Cited by 6 publications

References 53 publications

Cu/CuOx@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Cu/CuOx@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Atomic‐Level Regulation of Cu‐Based Electrocatalyst for Enhancing Oxygen Reduction Reaction: From Single Atoms to Polymetallic Active Sites

Highly reactive methyl group drives selective catalytic reduction of NOx by methanol on bismuth oxide nanoparticle implanted FER zeolite

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Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid

Cu/CuO_x@C for efficient selective transfer hydrogenation of furfural to furfuryl alcohol with formic acid