NO catalytic oxidation over an ultra-large surface area LaMnO3+δ perovskite synthesized by an acid-etching method
作者： Baohuai Zhao , Rui Ran , Li Sun , Xingguo Guo , Xiaodong Wu
DOI: 10.1039/C6RA12308B
关键词: Ion 、 Activated oxygen 、 Catalysis 、 Acid etching 、 Materials science 、 Inorganic chemistry 、 Perovskite (structure) 、 Valence (chemistry) 、 Catalytic oxidation 、 Specific surface area
摘要: The perovskite oxides LaMnO3+δ were prepared by a citrate method and then etched acid solution with different times. After etching, the structures of all catalysts remained, surface area enlarged apparently, NO catalytic oxidation activities obviously promoted increasing etching time. Long-term experiments revealed acceptable stability catalysts. favorable mainly due to their high specific area, abundant activated oxygen species vacancies, as well higher valence state Mn ions resulting from loss La3+ in structure.
rsc.org
sci-hub.se 参考文章(34)
A. Glisenti, M. Pacella, M. Guiotto, M.M. Natile, P. Canu, Largely Cu-doped LaCo1−xCuxO3 perovskites for TWC: Toward new PGM-free catalysts Applied Catalysis B-environmental. ,vol. 180, pp. 94- 105 ,(2016) , 10.1016/J.APCATB.2015.06.017
Oxana P. Taran, Artemiy B. Ayusheev, Olga L. Ogorodnikova, Igor P. Prosvirin, Lyubov A. Isupova, Valentin N. Parmon, Perovskite-like catalysts LaBO3 (B = Cu, Fe, Mn, Co, Ni) for wet peroxide oxidation of phenol Applied Catalysis B-environmental. ,vol. 180, pp. 86- 93 ,(2016) , 10.1016/J.APCATB.2015.05.055
K.-S. Song, S.-K. Kang, S.D. Kim, Preparation and characterization of Ag/MnOx/perovskite catalysts for CO oxidation Catalysis Letters. ,vol. 49, pp. 65- 68 ,(1997) , 10.1023/A:1019072314394
Meiqing SHEN, Zhen ZHAO, Jiahao CHEN, Yugeng SU, Jun WANG, Xinquan WANG, Effects of calcium substitute in LaMnO3 perovskites for NO catalytic oxidation Journal of Rare Earths. ,vol. 31, pp. 119- 123 ,(2013) , 10.1016/S1002-0721(12)60244-0
W. Wang, G. McCool, N. Kapur, G. Yuan, B. Shan, M. Nguyen, U. M. Graham, B. H. Davis, G. Jacobs, K. Cho, X. Hao, Mixed-Phase Oxide Catalyst Based on Mn-Mullite (Sm, Gd)Mn2O5 for NO Oxidation in Diesel Exhaust Science. ,vol. 337, pp. 832- 835 ,(2012) , 10.1126/SCIENCE.1225091
Hanfeng Lu, Pengfei Zhang, Zhen-An Qiao, Jinshui Zhang, Huiyuan Zhu, Jihua Chen, Yinfei Chen, Sheng Dai, Ionic liquid-mediated synthesis of meso-scale porous lanthanum-transition-metal perovskites with high CO oxidation performance Chemical Communications. ,vol. 51, pp. 5910- 5913 ,(2015) , 10.1039/C5CC00534E
S Ponce, M.A Peña, J.L.G Fierro, Surface properties and catalytic performance in methane combustion of Sr-substituted lanthanum manganites Applied Catalysis B-environmental. ,vol. 24, pp. 193- 205 ,(2000) , 10.1016/S0926-3373(99)00111-3
M. Alifanti, J. Kirchnerova, B. Delmon, Effect of substitution by cerium on the activity of LaMnO3 perovskite in methane combustion Applied Catalysis A-general. ,vol. 245, pp. 231- 243 ,(2003) , 10.1016/S0926-860X(02)00644-0
Kazuya Tsujino, Michio Matsumura, Morphology of nanoholes formed in silicon by wet etching in solutions containing HF and H2O2 at different concentrations using silver nanoparticles as catalysts Electrochimica Acta. ,vol. 53, pp. 28- 34 ,(2007) , 10.1016/J.ELECTACTA.2007.01.035
Gang Liu, Jiaqi Li, Kun Yang, Wenxiang Tang, Haidi Liu, Jun Yang, Renliang Yue, Yunfa Chen, None, Effects of cerium incorporation on the catalytic oxidation of benzene over flame-made perovskite La1−xCexMnO3 catalysts Particuology. ,vol. 19, pp. 60- 68 ,(2015) , 10.1016/J.PARTIC.2014.07.001