Effect of Calcination Temperature on the Textural Properties and Catalytic Behavior of the Al2O3 Doped Mesoporous Monometallic Cu Catalysts in Dimethyl Oxalate Hydrogenation

Kong, Xiangpeng; Wu, Yuehuan; Yuan, Peihong; Wang, Man; Wu, Peng; Ding, Lifeng; Wang, Ruihong; Chen, Jiangang

doi:10.1007/s10562-020-03453-z

Cited by 5 publications

(2 citation statements)

References 59 publications

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“…The chemical states of Cu were further analyzed with the Cu LMM Auger spectra, which characterized Cu 0 at 918.0-918.7 eV, Cu + at 913.3-915.5 eV, and Cu 2+ at 916.7-917.9 eV. [48][49][50][51][52] Fresh 3%Cu/CeO 2 contains 37.5% of Cu 2+ and 62.5% of Cu + (Fig. 3b).…”

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Dynamics of the Cu/CeO₂catalyst during methanol steam reforming

Jin

Wang

et al. 2022

Catal. Sci. Technol.

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confidence: 99%

Dynamics of the Cu/CeO₂catalyst during methanol steam reforming

Jin

Wang

et al. 2022

Catal. Sci. Technol.

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“…The high temperature calcination sometimes changes the nature of the support, such as how the high‐temperature calcination of Cu/ZrO 2 /Al 2 O 3 composite catalyst caused the surface enrichment of CuO species with the formation of CuAl 2 O 4 spinel, the crystallization of ZrO 2 from amorphous to a monoclinic phase, and increased surface acid sites. [ 135 ] In another study, [ 136 ] monometallic Cu catalyst doped with Al 2 O 3 showed the presence of Cu 0 and Cu + active surface species while Al 2 O 3 had amorphous nature.…”

Section: Hydrogenation Of Dialkyl Oxalatementioning

confidence: 99%

An overview of mono‐ethylene glycol synthesis via CO coupling reaction: Catalysts, kinetics, and reaction pathways

et al. 2023

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Monoethylene glycol (MEG) is a promising chemical and a useful feedstock for the synthesis of several industrial products. The current commercial process of MEG production utilizes petroleum feedstock (ethylene) and an expensive catalyst, and the yield is low. Syngas is an attractive alternate feedstock for MEG. Syngas to MEG proceeds in two steps: the self‐closing, green step of carbonylation of alkyl nitrile to produce dialkyl oxalate, and further hydrogenation of oxalate to MEG. Many reviews which focused on catalyst development, reaction mechanisms, and process variables were published earlier. The present work covers the developments in the syngas‐to‐MEG synthesis process after 2014. It overviews the performance of novel catalyst systems reported in literature. A discussion on reaction pathways and kinetic models is also presented. This work will provide useful insight into syngas‐to‐MEG conversion.

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Mesoporous Cu Catalysts for Dimethyl Oxalate Selective Hydrogenation: Impact of the Cu/Al interface on the Textural Properties and Catalytic Behavior

et al. 2022

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In this paper, mesoporous monometallic Cu catalysts reinforced by the Al 3 + dopants with different chemical features were successfully synthesized by controlling the preparation process. The N 2 -Adsorption/Desorption, XRD, H 2 -TPR, SEM, TEM, H 2 -TPD and XPS were conducted to explore the structure evolution of the as-synthesized samples focusing on the interface effect between Cu nano-particles (NPs) and Al 3 + dopants. It is found that the precipitants used for preparing precursors show drastically effect on the Al 3 + chemical form and Cu/Al bonding manners of the as-synthesized CuAl catalysts, further determining the resultant physicochemical properties and catalytic behavior in dimethyl oxalate (DMO) hydrogenation. In gasphase DMO hydrogenation, 98.0 % ethylene glycol (EG) and 90.0 % ethanol (EtOH) yield from DMO selective hydrogenation can be achieved over the CuAl catalyst by regulating the reaction temperature. The correlation between the catalytic behavior and physicochemical features shows that the surface Cu + sites generated in the Cu/(hydr)oxide interface should be essential for DMO selective hydrogenation in presence of the adequate Cu 0 sites. Additionally, the CuÀ OÀ Al patterns in the Cu/Al interface intend to promote more electron transferred from the Al 3 + dopants to Cu species through the O bridging, facilitating the CuAl(O) stronger Cu/Al interaction than that of the CuAl(C) catalyst in form of CuÀ AlÀ OH mode. Thus, the Cu NPs growth of the CuAl(O) catalyst was effectively retarded, favoring enhanced catalytic stability.

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Effect of Calcination Temperature on the Textural Properties and Catalytic Behavior of the Al2O3 Doped Mesoporous Monometallic Cu Catalysts in Dimethyl Oxalate Hydrogenation

Cited by 5 publications

References 59 publications

Dynamics of the Cu/CeO₂catalyst during methanol steam reforming

Dynamics of the Cu/CeO₂catalyst during methanol steam reforming

An overview of mono‐ethylene glycol synthesis via CO coupling reaction: Catalysts, kinetics, and reaction pathways

Mesoporous Cu Catalysts for Dimethyl Oxalate Selective Hydrogenation: Impact of the Cu/Al interface on the Textural Properties and Catalytic Behavior

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Effect of Calcination Temperature on the Textural Properties and Catalytic Behavior of the Al2O3 Doped Mesoporous Monometallic Cu Catalysts in Dimethyl Oxalate Hydrogenation

Cited by 5 publications

References 59 publications

Dynamics of the Cu/CeO2catalyst during methanol steam reforming

Dynamics of the Cu/CeO2catalyst during methanol steam reforming

An overview of mono‐ethylene glycol synthesis via CO coupling reaction: Catalysts, kinetics, and reaction pathways

Mesoporous Cu Catalysts for Dimethyl Oxalate Selective Hydrogenation: Impact of the Cu/Al interface on the Textural Properties and Catalytic Behavior

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Product

Resources

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Dynamics of the Cu/CeO₂catalyst during methanol steam reforming

Dynamics of the Cu/CeO₂catalyst during methanol steam reforming