High-efficient degradation of benzene over Pt/TiO2 by adding a small amount of H2 under a mild condition
High-efficient degradation of benzene over Pt/TiO2 by adding a small amount of H2 under a mild condition
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DOI：
10.1016/j.catcom.2010.12.004
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发表时间：
2011-03
影响因子：
3.7
通讯作者：
Xi Li;Jiandong Zhuang;Liyan Xie;Ping Liu;Rusheng Yuan;Xicheng Shi;Donghui Wang
中科院分区：
文献类型：
--
作者：
Xi Li;Jiandong Zhuang;Liyan Xie;Ping Liu;Rusheng Yuan;Xicheng Shi;Donghui Wang
在低温条件下，在富氧氧化体系中加入少量h2o2，苯在Pt/ tio2上快速分解。在120℃时，苯的转化率为86%，矿化率为68%。研究了H2amount、反应温度和Pt颗粒的分散对Pt/ tio2活性和稳定性的影响。在Pt分散度高的催化剂上，h2的加入不仅产生苯降解的能量，而且促进羟基自由基的生成，使苯矿化。因此，可以提高Pt/ tio2的活性和稳定性。
At low temperature, benzene is decomposed rapidly over Pt/TiO2by adding a small amount of H2into an O2-rich oxidation system. At 120°C, the conversion and mineralization ratio of benzene is 86% and 68% respectively. Effects of H2amount, reaction temperature and dispersion of Pt particles on the activity and stability of Pt/TiO2are studied. Over the catalyst with high Pt dispersion, the addition of H2is supposed to not only produce the energy for the benzene degradation but also promote the generation of hydroxyl radicals to mineralize benzene. Therefore, the activity and stability of Pt/TiO2can be enhanced.