Open AccessCatalytic N2O Decomposition over Cu/Mn/Zn Doped Ceo2 Composite Oxides
Author(s) -
Yuanyang Zhang,
Yijing Guo,
Na Li,
Yaoyu Feng
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/281/1/012001
Subject(s) - decomposition , manganese , zinc , coprecipitation , catalysis , copper , doping , nuclear chemistry , molar ratio , materials science , space velocity , inorganic chemistry , chemistry , analytical chemistry (journal) , metallurgy , selectivity , biochemistry , optoelectronics , organic chemistry , chromatography
Cu/Mn/Zn oxides were firstly prepared by coprecipitation with molar ratio of Cu/Zn, 0.17, and Mn/(Cu+Zn) by 0.0∼0.06, respectively. The temperature of N 2 O conversion ca. 10% over Cu/Zn and Cu/Mn 0.03 /Zn was 370°C and 325°C, respectively, by using 6.8(v)% N 2 O+balanced N 2 , and GHSV of 30000h −1 , indicating the addition of manganese oxide could improve Cu/Zn oxide activity on N 2 O decomposition. The Cu/Mn/Zn doped CeO 2 composite oxides were further prepared with molar ratio of Ce/Cu by 0.0∼1.4. The temperature of N 2 O conversion ca . 10% over Ce 1.0 /Cu/Mn 0.03 /Zn was 260°C as same conditions applied over Cu/Zn and Cu/Mn 0.03 /Zn samples. Stability test by using simulated mixture, 6.8(v)% N 2 O+5.0(v)% O 2 +3.0(v)% H 2 O+balanced N 2 , 580°C, GHSV of 30000h −1 , showed that N 2 O conversion remained stable. Characterization demonstrated that the synergistic action of active components was the main origin of Ce 1.0 /Cu/Mn 0.03 /Zn sample had good performance on N 2 O abatement.