期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 2, 期 9, 页码 1806-1810出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cy20238g
关键词
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资金
- National Natural Science Foundation of China [21106071]
- Ministry of Education of China [20113221120004]
- National High-Tech Research and Development Program of China (863 Program) [2009AA05Z313]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Research Subject of Environmental Protection Department of Jiangsu Province of China [201016]
Potassium additives slightly decreased catalytic activity for NH3-SCR of NO when the mass amount of K2O was less than 1.0%, but dramatically decreased the catalytic activity when the mass amount of K2O was more than 3.0%. The deactivation mechanism was that potassium additives directly decreased the specific surface area, the total acid amount and the acid strength of the strong acid sites, and induced the KCl-rich crystallization and the formation of non-active K2ZrO3, K2TiO3 and K2CeO3.
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