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Preparation of active coke combining coal with biomass and its denitrification performance
Journal of Iron and Steel Research International ( IF 2.5 ) Pub Date : 2021-05-14 , DOI: 10.1007/s42243-021-00605-2
Xiao-hu Zhou , Sheng-fu Zhang , Yu-yang Wei , Farooq Sher , Yang Li , Wen-zhou Yu , Liang-ying Wen

To improve the selective catalytic reduction of NO with NH3 over active coke (AC), coal–biomass ACs were prepared from the mixture of poplar and 1/3 coking coal for increasing the active sites. The resultant ACs were characterized by N2 adsorption and X-ray photoelectron spectroscopy. Furthermore, the denitrification performance was tested at laboratory scale. In addition, density functional theory was used to analyze active sites on the surface of AC. The result revealed that, with an increase in poplar content, the decrease in micropores volume appeared in the reduction of denitrification space. However, C−O group including hydroxyl and ether increased with the increase in poplar content, which was found to be most likely responsible for the promoted catalytic activity of AC toward NO reduction mainly because of enhancing NH3 adsorption. The comprehensive effect of two factors made the denitrification ability of AC increased first and then decreased.



中文翻译:

煤与生物质结合的活性焦的制备及其反硝化性能。

为了提高用NH 3较活性焦(AC)选择性催化还原NO的效果,由杨木和1/3焦煤的混合物制备了煤生物质AC,以增加活性位。生成的AC的特征在于N 2吸附和X射线光电子能谱。此外,在实验室规模测试了反硝化性能。另外,使用密度泛函理论分析了AC表面的活性位点。结果表明,随着杨树含量的增加,反硝化空间的减小导致微孔体积的减小。但是,随着杨树含量的增加,包括羟基和醚在内的C-O基团也随之增加,这主要是由于AC对NO还原的催化活性增强,这主要是由于NH 3的吸附增强。两个因素的综合作用使得AC的反硝化能力先升高后降低。

更新日期:2021-05-14
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