The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Comparative study of α-, β-, γ- and δ-MnO2 on toluene oxidation: Oxygen vacancies and reaction intermediates
Abstract
Abstract The structure-performance relationship of α-, β-, γ- and δ-MnO2 catalysts were studied. The four samples exhibited different activities of toluene oxidation in terms of distinct tunnel sizes, surface-active oxygen and redox properties. δ-MnO2 catalyst with K+ in the mezzanines of its layers presented the highest toluene oxidation activity under a GHSV of 60,000 mL·g−1 h−1, as well as good water resistance. HAADF images and EELS results showed that oxygen vacancies preferred to form on δ-MnO2 lattice with layer stack dislocations via Mn4+ reduction rather than β-MnO2 with good crystallization. These inherent-distorted structures with heterocations K+ improved the emerge-annihilate cycling of oxygen vacancies. In-situ DRIFTS results showed that toluene adsorption was facilitated via rapid dehydrogenation of methyl due to abundant surface adsorbed oxygen on δ-MnO2. In addition, benzoate, maleic and manganese carbonate on δ-MnO2 were the key intermediate species during toluene oxidation at relatively low temperatures.
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Metadata
- Authors
- Yang, W., Su, Z., Xu, Z., Yang, W., Peng, Y., & Li, J.
- Venue
- Applied Catalysis B: Environmental
- Publisher
- Elsevier BV
- Published
- 2020-01
- Volume
- 260
- Pages
- 118150
- ISSN
- 0926-3373 (ISSN-L)
- OpenAlex
- W2971679305
- Cited by
- 746
- References
- 31
- FWCI
- 20.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yang, W., Su, Z., Xu, Z., Yang, W., Peng, Y., & Li, J. (2020). Comparative study of α-, β-, γ- and δ-MnO2 on toluene oxidation: Oxygen vacancies and reaction intermediates. Applied Catalysis B: Environmental. https://doi.org/10.1016/j.apcatb.2019.118150
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