Catalytic combustion of diesel soot over perovskite-type catalyst: Potassium titanates |
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| Authors: | Xiuhong?Meng Qiang?Wang Email author" target="_blank">Linhai?DuanEmail author Jong-Shik?Chung |
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| Institution: | (1) National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440020, India;(2) Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Řež, Prague, 250 68, Czech Republic;(3) Advanced Materials Laboratory, National Institute for Materials Science, 1-1Namiki, Tsukuba Ibaraki , 3050044, Japan; |
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| Abstract: | Potassium titanates with a high crystallinity were successfully prepared by the sol-gel method and characterized by XRD, SEM, and BET surface area measurements. K6Ti4O11, K2Ti2O5, K2Ti4O9 were found to have better soot oxidation performance compared with Pt/TiO2 and CeO2 based catalysts. K2Ti2O5 may be an excellent candidate for soot oxidation due to its high oxidation activity, water-stability, resistance to sulfur poisoning and economical advantages. Certain amount of NO x can contribute to the catalytic combustion of diesel over potassium titanates, implying that K2TiO5 may be a kind of catalyst for simultaneous removal of NO x and soot. |
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