Methane partial oxidation by monomeric Cu active center confined on ZIF-7

Lee, Hyesung; Kwon, Choah; Keum, Changjoon; Kim, Hee‐Eun; Lee, Hyunjoo; Han, Byungchan; Lee, Sang-Yup

doi:10.1016/j.cej.2022.138472

Cited by 22 publications

(16 citation statements)

References 70 publications

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“…, 0.08 eV for the C–H bond dissociation and 0.0 eV for the C–O bond recombination. 23 It is worth mentioning here that transition barriers are negligible regardless of whether the methane oxidation proceeds via either pathways.…”

Section: Resultsmentioning

confidence: 97%

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Nguyen

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 97%

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Nguyen

et al. 2023

RSC Adv.

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“…However, the peaks of CH 3 OOH, CH 3 OH and HCOOH were all cracked (Figure S7b-S7d). [23] In addition, no oxygenates were formed without the introduction of methane, which suggested methane was the only carbon source for the generation of oxygenates.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

Effective SrWO₄/TiO₂ Heterojunction with Enhanced Carriers Separation and Transfer for Photocatalytic Methane Oxidation

Huang

Zhang

Gan

et al. 2023

Chemistry A European J

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Photocatalytic methane oxidation to oxygenates with promising performance remains as a grand challenge due to the low productivity and severe overoxidation. Herein, SrWO4/TiO2 heterojunction was developed for photocatalytic methane oxidation with O2 to liquid oxygenates ( Please replace “oxygenates” with “oxygenated”)products under mild reaction conditions. The optimized SrWO4/TiO2 catalyst exhibited high productivity of 13365 μmol/g with high selectivity of 98.7 % for oxygenates. Benefited from the intimate heterojunction interface of SrWO4/TiO2, the constructed I‐type heterostructure improved the separation and transfer of photogenerated carriers, and a high‐speed transfer channel for photogenerated carriers was fabricated. Simultaneously, the special band structure can increase the amount of photogenerated electrons and holes on the TiO2 surface, which promoted the formation of reactive oxygen species to enhance liquid oxygenates productivity.

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“…Combining the XAS spectroscopies and DFT calculations, they claimed that the mononuclear CuN 4 center was the active site in Cu-ZIF-7 for the methane conversion reaction ( Figure 10 ). In addition, they found that the CuN 4 site could reduce the strong acidity of ZIF-7 as well, which contributed to the high methanol selectivity by avoiding the side-reaction that lead to formic acid forming [ 63 ].…”

Section: Cu-mofsmentioning

confidence: 99%

Recent Insights into Cu-Based Catalytic Sites for the Direct Conversion of Methane to Methanol

Mao

Liu

2022

Molecules

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Direct conversion of methane to methanol is an effective and practical process to improve the efficiency of natural gas utilization. Copper (Cu)-based catalysts have attracted great research attention, due to their unique ability to selectively catalyze the partial oxidation of methane to methanol at relatively low temperatures. In recent decades, many different catalysts have been studied to achieve a high conversion of methane to methanol, including the Cu-based enzymes, Cu-zeolites, Cu-MOFs (metal-organic frameworks) and Cu-oxides. In this mini review, we will detail the obtained evidence on the exact state of the active Cu sites on these various catalysts, which have arisen from the most recently developed techniques and the results of DFT calculations. We aim to establish the structure–performance relationship in terms of the properties of these materials and their catalytic functionalities, and also discuss the unresolved questions in the direct conversion of methane to methanol reactions. Finally, we hope to offer some suggestions and strategies for guiding the practical applications regarding the catalyst design and engineering for a high methanol yield in the methane oxidation reaction.

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Methane partial oxidation by monomeric Cu active center confined on ZIF-7

Cited by 22 publications

References 70 publications

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Effective SrWO₄/TiO₂ Heterojunction with Enhanced Carriers Separation and Transfer for Photocatalytic Methane Oxidation

Recent Insights into Cu-Based Catalytic Sites for the Direct Conversion of Methane to Methanol

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Methane partial oxidation by monomeric Cu active center confined on ZIF-7

Cited by 22 publications

References 70 publications

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Insight into the direct conversion of methane to methanol on modified ZIF-204 from the perspective of DFT-based calculations

Effective SrWO4/TiO2 Heterojunction with Enhanced Carriers Separation and Transfer for Photocatalytic Methane Oxidation

Recent Insights into Cu-Based Catalytic Sites for the Direct Conversion of Methane to Methanol

Contact Info

Product

Resources

About

Effective SrWO₄/TiO₂ Heterojunction with Enhanced Carriers Separation and Transfer for Photocatalytic Methane Oxidation