PTFE-Modified Mn-Co-Based Catalytic Ceramic Filters with H2O Resistance for Low-Temperature NH3-SCR

被引：8
|
作者：
Li, Kun [1 ]
Zhou, Tao [1 ]
Xu, Xinqiang [1 ]
Han, Changye [1 ]
Zhang, Hua [1 ]
Jin, Jiang [1 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China
来源：
SUSTAINABILITY | 2022年 / 14卷 / 09期
关键词：
NH3-SCR; catalytic ceramic filter; PTFE-modified; H2O resistance; COMBINED PARTICLE SEPARATION; NO; REDUCTION; REMOVAL; NH3; ENHANCEMENT; MEMBRANE; BEHAVIOR; ELEMENTS; SURFACE;
D O I：
10.3390/su14095353
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Mn-Co-based catalysts were loaded to ceramic filters element by impregnation for the coprocessing of dust and nitrogen oxide (NOx) in flue gas. The influence of the Mn/Co ratio and loading on the catalytic performance was investigated. The Mn-Co-based catalytic ceramic filter with a Mn/Co molar ratio of 2/1 can achieve 99% NO conversion by selective catalytic reduction of NOx with NH3 (NH3-SCR) in the temperature range of 100-180 degrees C, but its resistance to H2O was relatively poor. The filter element was modified by PTFE to improve the H2O resistance. After modification, the catalytic ceramic filter showed superior resistance to H2O and SO2 at low temperatures (100-180 degrees C) and satisfactory self-cleaning performance.
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页数：11
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