Promotional effect of acidic oxide on catalytic activity and N 2  selectivity over CeO 2  for selective catalytic reduction of NO  x   by NH 3 | Zendy

Song Zhongxian | Zendy; Liu Pan | Zendy; Fu Yongmei | Zendy; Liu Hongpan | Zendy; Huang Zhenzhen | Zendy; Kang Haiyan | Zendy; Mao Yanli | Zendy; Liu Biao | Zendy; Guo Yifei | Zendy

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Promotional effect of acidic oxide on catalytic activity and N 2 selectivity over CeO 2 for selective catalytic reduction of NO x by NH 3

Author(s) -

Song Zhongxian,

Liu Pan,

Fu Yongmei,

Liu Hongpan,

Huang Zhenzhen,

Kang Haiyan,

Mao Yanli,

Liu Biao,

Guo Yifei

Publication year - 2019

Publication title -

applied organometallic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.53

H-Index - 71

eISSN - 1099-0739

pISSN - 0268-2605

DOI - 10.1002/aoc.4919

Subject(s) - chemistry , catalysis , selectivity , lewis acids and bases , selective catalytic reduction , inorganic chemistry , oxide , hydrothermal circulation , nuclear chemistry , chemical engineering , organic chemistry , engineering

The CeO 2 , CeO 2 ‐ZrO 2 and CeO 2 ‐WO 3 catalysts were prepared by hydrothermal method and used to the selective catalytic reduction of NO x by NH 3 . The addition of ZrO 2 or WO 3 into CeO 2 was favorable for pore structure, and then improved the number of active sites. Besides, the introduction of ZrO 2 into CeO 2 could improve the Lewis acid sites while WO 3 could contribute to the generation of Brønsted and Lewis acid sites, which could improve the catalytic performance and N 2 selectivity. The CeO 2 ‐WO 3 catalyst exhibited optimal catalytic activity with above 90% NO x conversion performance at 220–425 °C and approximately 100% N 2 selectivity at 150–425 °C.

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