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Interaction of Na, K, and Fe with porous cordierite at elevated temperatures

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Abstract

The effects of Na, K, and Fe with porous cordierite were investigated at elevated temperatures. Samples of unused diesel particulate filter cordierite substrates were doped with sodium, potassium, and iron. The doped samples were heated in a thermal gravimetric analyzer to 300, 500, 900, and 1100 °C. The resulting interactions were analyzed with scanning electron microscopy, wavelength-dispersive X-ray spectroscopy (WDS), and X-ray diffraction. The alkalis and iron induced corrosion and degradation to the cordierite substrate at temperatures lower than pristine cordierite substrate samples. The corrosion and degradation pathway followed the porous structure as observed with WDS.

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Acknowledgements

The authors would like to thank the financial support provided by Lehigh University and Hunsicker Emissions Services LLC through Research for Advanced Manufacturing in Pennsylvania Program (RAMP) Project and Pennsylvania Infrastructure Technology Alliance (PITA).

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Authors and Affiliations

  1. Lehigh University, 1 W. Packer Avenue, Bethlehem, PA, 18015, USA

    Kun Yang & John T. Fox

  2. Hunsicker Emissions Services, LLC, P.O. Box 44, Earlington, PA, 18918, USA

    Robert Hunsicker

Authors
  1. Kun Yang
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  2. John T. Fox
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  3. Robert Hunsicker
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Correspondence to John T. Fox.

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Yang, K., Fox, J.T. & Hunsicker, R. Interaction of Na, K, and Fe with porous cordierite at elevated temperatures. J Mater Sci 52, 4025–4041 (2017). https://doi.org/10.1007/s10853-016-0665-2

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  • DOI: https://doi.org/10.1007/s10853-016-0665-2

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