Atmospheric plasma-driven catalysis for the low temperature decomposition of dilute aromatic compounds
Atmospheric plasma-driven catalysis for the low temperature decomposition of dilute aromatic compounds
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DOI：
10.1088/0022-3727/38/8/029
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发表时间：
2005-04-21
影响因子：
3.4
通讯作者：
Futamura, S
中科院分区：
文献类型：
--
作者：
Kim, HH;Ogata, A;Futamura, S
采用等离子体驱动催化（PDC）系统，在常压下研究了苯系物和甲酸等6种芳香族化合物对挥发性有机物的降解。在PDC反应器中，挥发性有机化合物的分解效率主要取决于比输入能（SIE）以及对11 000 ~ 55 000 h（-1）范围内的气时空速的不敏感性。甲酸（HCOOH）是由测试的芳香族化合物分解形成的常见中间体。甲酸也被发现是二氧化碳形成的重要中间体。除苯乙烯外，所有测试的挥发性有机物均表现出零级动力学，这证实了PDC反应器在挥发性有机物分解中的催化反应的主导作用。一个简单的动力学模型很好地代表了所观察到的零级动力学相对于SIE。与传统的等离子体反应器，没有发现与PDC反应器的电离电位和分解之间的相关性。连续运行试验表明，催化剂性能稳定，在150 h以上催化活性没有下降。
The decomposition of volatile organic compounds (VOCs)-six aromatic compounds of benzene derivatives and formic acid-was investigated using a plasma-driven catalysis (PDC) system at atmospheric pressure. In the PDC reactor, the decomposition efficiency of VOCs was mostly determined by the specific Input energy (SIE) and insensitivity to the gas hourly space velocity from 11 000 to 55 000 h(-1). Formic acid (HCOOH) was formed as a common intermediate from the decomposition of the tested aromatic compounds. Formic acid was also found to be an important intermediate for CO2 formation. Except for styrene, all the tested VOCs indicated zero-order kinetics, which confirm the dominant role of the catalytic reaction in the decomposition of VOCs using the PDC reactor. A simple kinetic model represents well the observed zero-order kinetics with respect to the SIE. Unlike conventional plasma reactors, no correlation between the ionization potential and the decomposition was found with the PDC reactor. Continuous operation tests indicated stable performance without deterioration of catalytic activity over 150 h.