CeO2 crystal plane engineering to modulate CuO-CeO2 interactions and modify the CO-PROX reaction pathway

Hou, Xinglin; Zhao, Qinyang; Liu, Xiaoling; Chong, Mingben; Cheng, Dang-guo; Chen, Fengqiu; Zhan, Xiaoli

doi:10.1016/j.cej.2023.147982

Cited by 8 publications

(2 citation statements)

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“…Moreover, the O 1s spectra indicated a peak position intermediate between those of Fe 2 O 3 -300 and CuO-300. These shifts suggested the presence of a chemical interaction between Fe and Cu species, likely involving electron redistribution in Fe–O–Cu bonds . This redistribution resulted in an increased valence state of Fe, yielding more abundant Lewis acidic sites.…”

Section: Resultsmentioning

confidence: 99%

“…These shifts suggested the presence of a chemical interaction between Fe and Cu species, likely involving electron redistribution in Fe−O−Cu bonds. 50 This redistribution resulted in an increased valence state of Fe, yielding more abundant Lewis acidic sites. Additionally, the O 1s spectra distinguished between lattice oxygen species (O lat ) at a lower energy and surface oxygen species (O sur ) serving as Brønsted base sites at a higher energy.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Fan,

Qin,

et al. 2024

ACS Sustainable Chem. Eng.

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The development of sustainable and economical catalytic systems for the hydration of nitriles into amides is of great industrial significance. In this work, amorphous Fe 0.7 Cu 0.3 O x -300, synthesized by a simple melting method, presented high activity for nitrile hydration in water, without any additives. Characterization and mechanism experiments indicated that the surface oxygen of amorphous Fe 0.7 Cu 0.3 O x -300 acts as Brønsted base sites, enhancing the dissociation of H 2 O. The Fe−Cu interaction within the catalyst facilitates the formation of active Fe species with higher valence states, serving as Lewis acidic sites for nitrile molecule adsorption and activation. Notably, amorphous Fe 0.7 Cu 0.3 O x -300 achieved efficient synthesis of various aromatic, aliphatic, and heteroaromatic amides with high yields (20 products), also showcasing good scalability and stability. Moreover, the limited solubility of most amides in water further simplifies the process, allowing for simultaneous synthesis and purification. This study manifests the potential of amorphous Fe 0.7 Cu 0.3 O x -300 for large-scale industrial applications in amide synthesis, aligned with the principles of sustainable chemistry.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Fan,

Qin,

et al. 2024

ACS Sustainable Chem. Eng.

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Study on a novel hydrogen purification approach base on methane steam reforming process with CO-preferential oxidation and CO2 removal

Sun,

Duan,

Zhou

et al. 2025

Applied Energy

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Ultra-pure hydrogen from chemical looping preferential oxidation of CO over a Cu–O–Ce based dual function material

Zheng,

Jiang,

et al. 2024

Chemical Engineering Journal

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CeO2 crystal plane engineering to modulate CuO-CeO2 interactions and modify the CO-PROX reaction pathway

Cited by 8 publications

References 45 publications

Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Study on a novel hydrogen purification approach base on methane steam reforming process with CO-preferential oxidation and CO2 removal

Ultra-pure hydrogen from chemical looping preferential oxidation of CO over a Cu–O–Ce based dual function material

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CeO2 crystal plane engineering to modulate CuO-CeO2 interactions and modify the CO-PROX reaction pathway

Cited by 8 publications

References 45 publications

Amorphous Fe0.7Cu0.3Ox as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Amorphous Fe0.7Cu0.3Ox as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Study on a novel hydrogen purification approach base on methane steam reforming process with CO-preferential oxidation and CO2 removal

Ultra-pure hydrogen from chemical looping preferential oxidation of CO over a Cu–O–Ce based dual function material

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Product

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Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water

Amorphous Fe_0.7Cu_0.3O_x as a Bifunctional Catalyst for Selective Hydration of Nitriles to Amides in Water