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Si-doped Al2O3 nanosheet supported Pd for catalytic combustion of propane: effects of Si doping on morphology, thermal stability, and water resistance

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Abstract

Catalytic combustion of propane as typical light alkanes was important for the purification of industrial VOCs and automobile hydrocarbon emissions. Si-doped Al2O3 nanosheet was synthesized by a hydrothermal method, and effects of Si content on the morphology and thermal stability of Al2O3 were investigated. The doping of SiO2 could tune the thickness of Al2O3 nanosheets and significantly improve its thermal stability, the θ phase was still maintained, and the specific surface area was as high as 56.3 m2 g−1 after calcination at 1200 °C. And then the Si-doped Al2O3 nanosheets were used as support of Pd catalysts (Pd/Si-Al2O3 nanosheets) for catalytic combustion of propane, especially Pd/3.6Si-Al2O3 nanosheets, which presented high activity, stability, and resistance to sintering and H2O due to the promotion of Si on the thermal stability of Al2O3 and the stabilization (dispersion, isolation, and strong interaction) of PdOx species.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the National Key Research and Development Program of China (No. 2016YFC0204300), National Natural Science Foundation of China (No. 21922602, 21777043, 22076047), and Natural Science Foundation of Shanghai (19ZR1412900). Additional support was provided by Fundamental Research Funds for the Central Universities.

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Mingxiang Jiang: investigation, methodology, writing—original draft. Qingqing Wu: investigation, methodology, validation, writing—review and editing. Jiaorong Yan: formal analysis, writing—review and editing. Jun Pan: supervision, formal analysis, writing—review and editing. Qiguang Dai: supervision, formal analysis, writing—review and editing. Wangcheng Zhan: supervision, funding acquisition, writing—review and editing.

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Correspondence to Qiguang Dai or Wangcheng Zhan.

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The authors declare no competing interests.

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Responsible Editor: Santiago V. Luis

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Jiang, M., Wu, Q., Yan, J. et al. Si-doped Al2O3 nanosheet supported Pd for catalytic combustion of propane: effects of Si doping on morphology, thermal stability, and water resistance. Environ Sci Pollut Res 28, 56480–56490 (2021). https://doi.org/10.1007/s11356-021-14646-3

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  • DOI: https://doi.org/10.1007/s11356-021-14646-3

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