PTFE-Modified Mn-Co-Based Catalytic Ceramic Filters with H 2 O Resistance for Low-Temperature NH 3 -SCR

Kun Li, Tao Zhou, Xinqiang Xu, Changye Han, Hua Zhang and Jiang Jin
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Kun Li: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
Tao Zhou: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
Xinqiang Xu: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
Changye Han: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
Hua Zhang: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China
Jiang Jin: College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China

Sustainability, 2022, vol. 14, issue 9, 1-11

Abstract: Mn-Co-based catalysts were loaded to ceramic filters element by impregnation for the coprocessing of dust and nitrogen oxide (NO x ) 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 NO x with NH 3 (NH 3 -SCR) in the temperature range of 100−180 °C, but its resistance to H 2 O was relatively poor. The filter element was modified by PTFE to improve the H 2 O resistance. After modification, the catalytic ceramic filter showed superior resistance to H 2 O and SO 2 at low temperatures (100–180 °C) and satisfactory self-cleaning performance.

Keywords: NH 3 -SCR; catalytic ceramic filter; PTFE-modified; H 2 O resistance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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