Polytetrafluoroethylene modifying: A low cost and easy way to improve the H2O resistance ability over MnOx for low-temperature NH3-SCR

被引：39

作者：

Zhang, Ningqiang ^{[1
]}

Li, Lingcong ^{[1
]}

Zhang, Bingbing ^{[3
]}

Sun, Yanming ^{[1
]}

Song, Liyun ^{[1
]}

Wu, Rui ^{[1
]}

He, Hong ^{[1
,2
]}

机构：

[1] Beijing Univ Technol, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China

[2] Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China

[3] Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010021, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2019年 / 7卷 / 03期

关键词：

SCR; MnOx; Polytetrafluoroethylene; H2O resistance; Hydrophobic surface; SELECTIVE CATALYTIC-REDUCTION; NO; NH3; MECHANISM; SO2;

D O I：

10.1016/j.jece.2019.103044

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Herein, an easy and low cost way is proposed to improve the H2O resistance ability of MnOx catalyst for low-temperature selective catalytic reduction (SCR), via PTFE modifying. The introduction of PTFE to MnOx promoted more tightly packed nanowires, generating a more hydrophobic surface. Mn-PTFE catalysts displayed H2O and SO2 resistance, lowering the probability of surface active sites being consumed. This work provides a new insight into the design of novel Mn-based composite catalysts with H2O and SO2 resistance ability, as well as promoting practical applications of Mn-based catalysts in low temperature SCR.

引用

页数：3

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