MnOx catalysts supported on SBA-15 and MCM-41 silicas for a competitive VOCs mixture oxidation: In-situ DRIFTS investigations

Moreno-Román, E.J.; Can, F.; Meille, V.; Guilhaume, N.; González-Cobos, J.; Gil, S.

doi:10.1016/j.apcatb.2023.123613

Cited by 9 publications

(1 citation statement)

References 90 publications

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“…Meanwhile, VOCs can be converted into secondary pollutants, thus generating near-surface ozone, photochemical smog, PM2.5, etc., posing severe threats to the ecological environment [ 2 ]. To achieve an efficient VOC abatement, catalyst-aided oxidation at low temperature has been perceived to be one of the most advanced approaches [ 3 , 4 ]. Among VOCs, propane is typified as an ultra-stable light alkane and is often used as a probe molecule to screen high-performance VOC elimination catalysts [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Xu,

Zhou,

Liu

et al. 2024

Nanomaterials

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Defect manipulation in metal oxide is of great importance in boosting catalytic performance for propane oxidation. Herein, a selective atom removal strategy was developed to construct a defective manganese oxide catalyst, which involved the partial etching of a Mg dopant in MnOx. The resulting MgMnOx-H catalysts exhibited superior low-temperature catalytic activity (T50 = 185 °C, T90 = 226 °C) with a propane conversion rate of 0.29 μmol·gcat.−1·h−1 for the propane oxidation reaction, which is 4.8 times that of pristine MnOx. Meanwhile, a robust hydrothermal stability was guaranteed at 250 °C for 30 h of reaction time. The comprehensive experimental characterizations revealed that the catalytic performance improvement was closely related to the defective structures including the abundant (metal and oxygen) vacancies, distorted crystals, valence imbalance, etc., which prominently weakened the Mn-O bond and stimulated the mobility of surface lattice oxygen, leading to the elevation in the intrinsic oxidation activity. This work exemplifies the significance of defect engineering for the promotion of the oxidation ability of metal oxide, which will be valuable for the further development of efficient non-noble metal catalysts for propane oxidation.

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Section: Introductionmentioning

confidence: 99%

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Xu,

Zhou,

Liu

et al. 2024

Nanomaterials

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Insight into the Better Collaboration of NiO and MnO_x in NiMn₂O₄ Spinel for Enhanced the Catalytic Oxidation Performance of Toluene

Zhang,

Xin,

Deng

et al. 2024

ChemCatChem

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NiMn oxides with different ratios (NixMnyOz) as well as spinel‐type NiMn2O4 oxides were synthesized and utilized in the catalytic oxidation of toluene. The results indicate that NiMn2Ox synthesized by the oxygen‐only roasting method exhibits superior catalytic activity due to the appropriate metal valence distribution. The catalytic activity is strongly related with the crystalline phase structures, NiMn2O4 spinel oxides catalyst shows the best low‐temperature performance with 90% conversion (T90) at 230 °C. Characterization results reveal that the superb catalytic performance of NiMn2O4 spinel oxide is mainly profit by the larger surface area, more abundant surface fugacious oxygen, stronger toluene adsorption capacity than that of the other NixMnyOz catalysts, which in favor of the speedy conversion of benzoic acid, improving the toluene catalytic performance. This finding provides a novel design strategy of NiMn composite oxides for synthesis of high‐efficiency performance toluene catalysts.

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Mechanistic insight into the mutual-effect and key intermediate during methanol accelerating toluene decomposition over Co-spinel catalyst revealed by PTR-TOF-MS and DFT calculation

Zhong,

Yin,

et al. 2024

Applied Catalysis B: Environment and Energy

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MnOx catalysts supported on SBA-15 and MCM-41 silicas for a competitive VOCs mixture oxidation: In-situ DRIFTS investigations

Cited by 9 publications

References 90 publications

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Insight into the Better Collaboration of NiO and MnO_x in NiMn₂O₄ Spinel for Enhanced the Catalytic Oxidation Performance of Toluene

Mechanistic insight into the mutual-effect and key intermediate during methanol accelerating toluene decomposition over Co-spinel catalyst revealed by PTR-TOF-MS and DFT calculation

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MnOx catalysts supported on SBA-15 and MCM-41 silicas for a competitive VOCs mixture oxidation: In-situ DRIFTS investigations

Cited by 9 publications

References 90 publications

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Less Is More: Selective-Atom-Removal-Derived Defective MnOx Catalyst for Efficient Propane Oxidation

Insight into the Better Collaboration of NiO and MnOx in NiMn2O4 Spinel for Enhanced the Catalytic Oxidation Performance of Toluene

Mechanistic insight into the mutual-effect and key intermediate during methanol accelerating toluene decomposition over Co-spinel catalyst revealed by PTR-TOF-MS and DFT calculation

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Product

Resources

About

Insight into the Better Collaboration of NiO and MnO_x in NiMn₂O₄ Spinel for Enhanced the Catalytic Oxidation Performance of Toluene