Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/11037
Title: Catalyst for the reduction of NO to N2 with ethanol or ethanol and hydrogen under lean DENOx conditions
Inventor: Costa, Costas
Valanidou, Lilian
Savva, Petros G.
Theologides, Christodoulos P.
Keywords: Catalyst;Nitric oxide;Gas nitrogen;Silver crystals
Category: Chemical Sciences
Field: Natural Sciences
Issue Date: 23-Dec-2010
Link: https://patents.google.com/patent/EP2468399A1/en?inventor=Costas+N.+Costa&oq=Costas+N.+Costa
Abstract: The invention relates to a novel catalyst having excellent activity, selectivity and stability for reducing nitric oxide to gas nitrogen, with ethanol or an ethanol-hydrogen mixture being used as a reducing agent, in the low temperature range of 150-300 °C and in the presence of an excess of oxygen (e.g., 5 % vol), H2O (5 % vol) and SO2 (50 ppm) in the supply. The inventive catalyst consists of silver crystals which are in contact with the phases of a mixed MgO, CeO2 and Al2O3 medium. The Ag/MgO-CeO2-Al2O3 catalyst can be used to obtain NO conversion levels which are greater than 40 %, nitrogen selectivity values of greater than 95 % and CO2 selectivity values greater than 97% under NOx oxidation conditions in the 150-400 °C temperature range and for a surface contact time of 0.09 s. In particular, 90% NO conversion is obtained as well as N2 and CO2 selectivity levels of 99 % at 250 °C with a reaction mixture of 500 ppm NO/1000 ppm C2H5OH /5% O2 /5% H2O / 50ppm SO2/He:
URI: http://ktisis.cut.ac.cy/handle/10488/11037
Type: Patents
Classification: B01J23/66 Silver or gold
Application: EP20100390001
Appears in Collections:Διπλώματα ευρεσιτεχνίας/ Patents

Show full item record

Page view(s) 50

55
checked on Dec 10, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.