Insight of platinum poisoning Cu/SAPO-34 during NH₃-SCR and its promotion on catalysts regeneration after hydrothermal treatment

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• 作者：Tie Yu^a ; ^b ; ^d ; Minhong Xu^a ; ¹ ; Yu Huang^a ; Jianqiang Wang^a ; Jun Wang^a ; ^{wangjun@tju.edu.cn} ; Liangfang Lv^a ; Gongshin Qi^d ; ^{Gongshin.qi@gm.com} ; Wei Li^d ; Meiqing Shen^a ; ^c
• 关键词：NH3-SCR ; SAPO-34 ; Hydrothermal treatment ; Regeneration ; Platinum
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：5 May 2017
• 年：2017
• 卷：204
• 期：Complete
• 页码：525-536
• 全文大小：3808 K
• 卷排序：204

文摘

Pt greatly increases N2O and NO2 generation during SCR process. Pt benefits copper species reduction but shows less impact on structure. Hydrothermal treatment promotes rejuvenation of poisoned Cu/SAPO-34 by Pt. Platinum-copper oxo-complexes weaken ammonia oxidation and improve SCR activity. Pt enhances copper oxides further distribution during hydrothermal treatment.