Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 6, Issue 21, Pages 7718-7728Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cy00677a
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Funding
- R&D Project for Environmental Protection of Jiangsu of China [2015002]
- Foundation from State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University [ZK201305]
- Research and Innovation Training Project for Graduate in General Universities of Jiangsu Province [KYZZ15_0227]
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Three-dimensionally ordered macroporous (3DOM) silicon-doped La0.8K0.2CoO3 perovskite catalysts were prepared by a colloidal crystal templating method. The as-prepared samples were characterized by XRD, FT-IR, FESEM, N-2 adsorption-desorption, XRF, XPS and H-2-TPR techniques to investigate the physical-chemical properties of the catalysts. The silica sol added into the perovskite precursor solution could be solidified at a relatively low temperature, which prevented the 3DOM structure from collapsing during calcination. Meanwhile, the specific surface areas and redox abilities of the catalysts could also be enhanced. The catalytic performance for soot combustion was evaluated in a temperature programmed oxidation device using NO/O-2 as an oxidant. Among all the as-prepared catalysts, 3DOM La0.8K0.2CoO3 perovskite doped with 5.89 wt% Si (3DOM LKC-S2) exhibited the best catalytic performance for soot removal.
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