Selective catalytic reduction of NO with NH3 at low temperatures over iron and manganese oxides supported on mesoporous silica

Autor:	Yan Huang, Zhiquan Tong, Junfeng Zhang, Jihui Huang
Rok vydání:	2008
Předmět:	Process Chemistry and Technology Inorganic chemistry Oxide chemistry.chemical_element Selective catalytic reduction Manganese Mesoporous silica Catalysis law.invention Ammonia chemistry.chemical_compound chemistry law Calcination General Environmental Science Space velocity
Zdroj:	Applied Catalysis B: Environmental. 78:309-314
ISSN:	0926-3373
DOI:	10.1016/j.apcatb.2007.09.031
Popis:	A series of catalysts of iron–manganese oxide supported on mesoporous silica (MPS) with different Mn/Fe ratio were studied for low-temperature selective catalytic reduction (SCR) of NO with ammonia in the presence of excess oxygen. Effects of amounts of iron–manganese oxide and calcination temperatures on NO conversion were also investigated. It was found that the Mn–Fe/MPS with Mn/Fe = 1 at the calcination temperature of 673 K showed the highest activity. The results showed that this catalyst yielded 99.1% NO conversion at 433 K at a space velocity of 20,000 h −1 . H 2 O has no adverse impact on the activity when the SCR reaction temperature is above 413 K. In addition, the SCR activity was suppressed gradually in the presence of SO 2 and H 2 O, while such effect was reversible after heating treatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6dc56507487e4cd43ce986ef2509fc94 https://doi.org/10.1016/j.apcatb.2007.09.031 Zobrazit plný text záznamu Full Text from ScienceDirect