TY - JOUR
T1 - Sulfur and water resistance of mn-based catalysts for low-temperature selective catalytic reduction of NOx
T2 - A review
AU - Gao, Chen
AU - Shi, Jian Wen
AU - Fan, Zhaoyang
AU - Gao, Ge
AU - Niu, Chunming
N1 - Publisher Copyright:
© 2018 by the authors; licensee MDPI, Basel, Switzerland.
PY - 2018/1
Y1 - 2018/1
N2 - Selective catalytic reduction (SCR) with NH3 is the most efficient and economic flue gas denitrification technology developed to date. Due to its high low-temperature catalytic activity, Mn-based catalysts present a great prospect for application in SCR de-NOx at low temperatures. However, overcoming the poor resistance of Mn-based catalysts to H2O and SO2 poison is still a challenge. This paper reviews the recent progress on the H2O and SO2 resistance of Mn-based catalysts for the low-temperature SCR of NOx. Firstly, the poison mechanisms of H2O and SO2 are introduced in detail, respectively. Secondly, Mn-based catalysts are divided into three categories—single MnOx catalysts, Mn-based multi-metal oxide catalysts, and Mn-based supported catalysts—to review the research progress of Mn-based catalysts for H2O and SO2 resistance. Thirdly, several strategies to reduce the poisonous effects of H2O and SO2, such as metal modification, proper support, the combination of metal modification and support, the rational design of structure and morphology, are summarized. Finally, perspectives and future directions of Mn-based catalysts for the low-temperature SCR of NOx are proposed.
AB - Selective catalytic reduction (SCR) with NH3 is the most efficient and economic flue gas denitrification technology developed to date. Due to its high low-temperature catalytic activity, Mn-based catalysts present a great prospect for application in SCR de-NOx at low temperatures. However, overcoming the poor resistance of Mn-based catalysts to H2O and SO2 poison is still a challenge. This paper reviews the recent progress on the H2O and SO2 resistance of Mn-based catalysts for the low-temperature SCR of NOx. Firstly, the poison mechanisms of H2O and SO2 are introduced in detail, respectively. Secondly, Mn-based catalysts are divided into three categories—single MnOx catalysts, Mn-based multi-metal oxide catalysts, and Mn-based supported catalysts—to review the research progress of Mn-based catalysts for H2O and SO2 resistance. Thirdly, several strategies to reduce the poisonous effects of H2O and SO2, such as metal modification, proper support, the combination of metal modification and support, the rational design of structure and morphology, are summarized. Finally, perspectives and future directions of Mn-based catalysts for the low-temperature SCR of NOx are proposed.
KW - De-NO
KW - HO and SO resistance
KW - Low-temperature
KW - Mn-based catalysts
KW - Selective catalytic reduction
UR - https://www.scopus.com/pages/publications/85040729268
U2 - 10.3390/catal8010011
DO - 10.3390/catal8010011
M3 - 文献综述
AN - SCOPUS:85040729268
SN - 2073-4344
VL - 8
JO - Catalysts
JF - Catalysts
IS - 1
M1 - 11
ER -