Revealing the mechanism differences of diverse strategies in boosting the low-temperature hydrothermal durability of Cu-SAPO-34 NH3-SCR catalysts

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成果类型：

期刊论文

作者：

Zhang, Shoute;Meng, Ying;Kemp, K. Christian;Pan, Chuanqi;Ding, Qianzhao;...

通讯作者：

Li, T

作者机构：

[Li, T; Meng, Ying; Li, Tao; Zhang, Shoute; Ding, Qianzhao] Huazhong Univ Sci & Technol, Key Lab Mat Chem Energy Convers & Storage, Hubei Key Lab Mat Chem & Serv Failure, Sch Chem & Chem Engn,Minist Educ, Wuhan 430074, Peoples R China.

[Kemp, K. Christian] POSTECH, Div Environm Sci & Engn, Ctr Ordered Nanoporous Mat Synth, Pohang 37673, South Korea.

[Pan, Chuanqi] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Inst Environm & Appl Chem,Coll Chem, Wuhan 430079, Peoples R China.

[Pang, Lei] DongFeng Trucks R&D Ctr, Zhushanhu Rd 653, Wuhan 430056, Peoples R China.

[Cai, Weiquan] Guangzhou Univ, Guangzhou Higher Educ Mega Ctr, Sch Chem & Chem Engn, 230 Wai Huan Xi Rd, Guangzhou 510006, Peoples R China.

通讯机构：

[Li, T ] H

Huazhong Univ Sci & Technol, Key Lab Mat Chem Energy Convers & Storage, Hubei Key Lab Mat Chem & Serv Failure, Sch Chem & Chem Engn,Minist Educ, Wuhan 430074, Peoples R China.

语种：

英文

关键词：

Cu-SAPO-34;Hydrothermal stability;NH3-SCR;Protective mechanisms

期刊：

Chemical Engineering Journal

ISSN：

1385-8947

年：

2023

卷：

452

页码：

139143

DOI：

10.1016/j.cej.2022.139143

基金类别：

We appreciate that the National Natural Science Foundation of China of No. 21473064 financially supports this study. Huazhong University of Science and Technology Analytical and Testing Center is also acknowledged for catalyst characterizations.

机构署名：

本校为其他机构

院系归属：

化学学院

摘要：

The low-temperature hydrothermal instability of Cu-SAPO-34 is an unresolved issue, thus jeopardizing its commercial application in NH3-SCR due to severe structural damage and loss of activity. Herein, we reported that efficient strategies i.e., rare earth metal (REM, denotes Ce, La, and Sm) incorporation, alkali metal (AM, denotes Na, K, and Cs) exchange, and NH3 pre-adsorption were utilized to boost the moisture stability of Cu-SAPO-34 through various protective mechanisms. Our extensive characterizations revealed that AM ions readily exchange...

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Revealing the mechanism differences of diverse strategies in boosting the low-temperature hydrothermal durability of Cu-SAPO-34 NH3-SCR catalysts

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