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Paper-Structured Catalyst Based on CeO2–ZrO2 Fibers for Soot Combustion

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Abstract

In the present work, we proposed a facile route to fabricate massive continuous CeO2–ZrO2 fibers that can be used as matrix for the paper catalyst. The morphology, phase structure and physicochemical properties of CeO2–ZrO2 fibers with different Ce/Zr ratios(1/9 ~ 1/1) were studied extensively. Results showed that the sample CZ-2-700(Ce/Zr = 1/3) fibers possessed the highest Osurf (51.8%) and OSC value (245 μmol O2/g of CeO2–ZrO2), as well as desirable amount of oxygen defects from CeO2 lattice (Ov/F2g), which was very adaptive and chosen as matrix fibers for paper catalyst with an open mat with numerous macro-pores. Through proportional adjustment of matrix fibers (CZ fibers and mullite fibers), high soot/catalyst contact degree and well dispersed active ingredients, as well as uniform interconnected network with macropores can be achieved for the paper catalysts, which was favored by the efficient transfer of abundant active oxygen species and exhaust gas diffusion for soot catalytic combustion. The sample (CZ fibers: mullite fibers = 2: 1, in weight) exhibited the highest catalytic activities among all the samples (T50 = 389 °C, Tm = 363 °C).

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Acknowledgments

The authors gratefully appreciate the financial support from National Natural Science Foundation (51602208, 51502179), Hebei Provincial Natural Science Foundation (E2017210065, E2017210096), and Key project of science and technology research in Hebei University (ZD2017067).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, People’s Republic of China

    Gang Yu, Jing Wang, Jiao Liu, Xiao Cheng, Hongmei Ma, Hongya Wu, Zhigang Yang, Guanglei Zhang & Xiuguo Sun

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  1. Gang Yu
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  2. Jing Wang
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  3. Jiao Liu
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  4. Xiao Cheng
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  8. Guanglei Zhang
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  9. Xiuguo Sun
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Correspondence to Gang Yu.

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Yu, G., Wang, J., Liu, J. et al. Paper-Structured Catalyst Based on CeO2–ZrO2 Fibers for Soot Combustion. Catal Lett 149, 3543–3555 (2019). https://doi.org/10.1007/s10562-019-02891-8

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  • DOI: https://doi.org/10.1007/s10562-019-02891-8

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