Low-temperature SCR of NO with NH3 over activated semi-coke composite-supported rare earth oxides
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- 作者：Jinping Wang ; Zheng Yan ; Lili Liu ; Yingyi Zhang ; Zuotai Zhang ; Xidong Wang ; xidong@pku.edu.cn" class="auth_mail
- 关键词：Rare earth oxides ; Selective catalytic reduction (SCR) ; Activated semi-coke ; NO conversion
- 刊名：Applied Surface Science
- 出版年：1 August 2014
- 年：2014
- 卷：309
- 期：Complete
- 页码：1-10
- 全文大小：3789 K
文摘
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High NO conversion rate is obtained at low temperature when composite rare earth oxide are loaded onto the activated semi-coke surface for NO removal.
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The concentration of oxygen vacancy in the catalysts could be promoted by the doping process and the vacancy is favored for the adsorption of O2 and the oxidation of NO in the denitration process.
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It is detected that both ammonia and NO molecules are absorbed on the catalysts surface and the characterization results elucidate that the SCR process over the RE-CeO2/ASC catalysts at low temperature (150–300 °C) follows the Langmuir–Hinshlwood (L–H) mechanism.