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| Study on catalytic performance of vanadate for the oxidation of soot from diesel exhaust |
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| 中国科学院金属研究所 |
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Cite this article:
. Study on catalytic performance of vanadate for the oxidation of soot from diesel exhaust. Chin J Mater Res, 2004, 18(2): 205-211.
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Abstract The catalysts of KVO$_{3}$, K$_{4}$V$_{2}$O$_{7}$, KVO$_{3}$+KCl and K$_{4}$V$_{2}$O$_{7}$+KCl were prepared and characterized. Their catalytic activity was investigated by a fixed--bed reactor for the soot obtained from the diesel emissions under the tight and loose contact mode. The thermal stability of catalysts and catalytic
performance of catalysts supported on foam ceramic were also studied. The results show that the catalysts of KVO$_{3}$, K$_{4}$V$_{2}$O$_{7}$, KVO$_{3}$+KCl and K$_{4}$V$_{2}$O$_{7}$+KCl have high thermal stability and catalytic activity for the soot. The molten salt catalysts of KVO$_{3}$+KCl and K$_{4}$V$_{2}$O$_{7}$+KCl have higher activity than that of KVO$_{3}$, K$_{4}$V$_{2}$O$_{7}$ because their mobility increases the contact
chance of catalysts and soot. The contact mode between catalyst and soot is an important factor that influences the catalytic performance of tight contact, which increases the contact chance of catalyst and soot.
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Received: 27 May 2004
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