Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
228873 | Journal of Industrial and Engineering Chemistry | 2010 | 6 Pages |
Abstract
Pure phase K4Zr5O12 is synthesized via solid state method in the present work. Various K/Zr ratios and temperatures are applied, and the synthesis process is investigated in detail by means of X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Its catalytic activity for soot oxidation is studied by temperature programmed oxidation with different types of soot/catalyst contacts. It is revealed that K4Zr5O12 is very active in the presence of 2–10% O2 for both tight and loose contacts (Tp(tight) = 335 °C, Tp(ethanol) = 355 °C and Tp(shaking) = 370 °C). Thermal stability study shows that K4Zr5O12 is highly stable up to at least 900 °C.
Related Topics
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Authors
Qiang Wang, Ji Hyang Sohn, So Ye Park, Jin Seong Choi, Joo Young Lee, Jong Shik Chung,