MnOx–CeO2/Activated Carbon Honeycomb Catalyst for Selective Catalytic Reduction of NO with NH3 at Low Temperatures

Autor:	Chuanzhang Ge, Yanli Wang, Licheng Ling, Wenming Qiao, Cui Li, Liang Zhan
Rok vydání:	2012
Předmět:	inorganic chemicals Chemistry General Chemical Engineering chemistry.chemical_element Selective catalytic reduction General Chemistry Manganese Manganese oxide Industrial and Manufacturing Engineering Catalysis Cerium medicine Honeycomb Selectivity Nuclear chemistry Activated carbon medicine.drug
Zdroj:	Industrial & Engineering Chemistry Research. 51:11667-11673
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie300555f
Popis:	Activated carbon honeycomb supported manganese and cerium oxides (MnOx–CeO2/ACH) catalysts were investigated for selective catalytic reduction (SCR) of NO at low temperatures of 80–200 °C. Compared with ACH supported manganese oxide catalyst (MnOx/ACH), MnOx–CeO2/ACH catalysts show much higher SCR activity and higher selectivity to N2. NO conversion can be improved by the addition of CeO2 from less than 50% to 100% at 80–160 °C. The N2 selectivity of higher than 99.8% is obtained over the Ce(1)Mn/ACH catalyst at 80–200 °C. Results indicate that the addition of CeO2 improves the distribution of MnOx and enhances the oxidation of NO to NO2, producing more absorbed NO3– on the catalyst surface, which is then reduced into N2 by NH3. These behaviors account for the promoting effect of CeO2 on the SCR activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fdec9e8b4aaae559a648bdfb82f843b8 https://doi.org/10.1021/ie300555f Zobrazit plný text záznamu