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RSC Adv

Title:		A citric acid-assisted deposition strategy to synthesize mesoporous SiO(2)-confined highly dispersed LaMnO(3) perovskite nanoparticles for n-butylamine catalytic oxidation
Author(s):		Chen H; Yang Y; Liu Q; Cui M; Chen X; Fei Z; Tao Z; Wang M; Qiao X;
Address:		"State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University Nanjing 210009 PR China zhaoyangfei@njtech.edu.cn qct@njtech.edu.cn +86 25 83587168 +86 25 83172298 +86 25 83587168 +86 25 83172298"
Journal Title:		RSC Adv
Year:		2019
Volume:		20190314
Issue:		15
Page Number:		8454 - 8462
DOI:		10.1039/c8ra10636c
ISSN/ISBN:		2046-2069 (Electronic) 2046-2069 (Linking)
Abstract:		"Catalytic oxidation can efficiently eliminate nitrogen-containing volatile organic compounds (NVOCs) and suppress the generation of toxic NO (x) in order to avoid secondary pollution. In this study, mesoporous SiO(2)-confined LaMnO(3) perovskite nanoparticles with high dispersion were successfully prepared by a citric acid-assisted deposition method (LMO/SiO(2)-SD) and tested for the oxidation of n-butylamine. The method utilized the synergistic effect of abundant active hydroxyl groups existing on the SiO(2) gel surface and citric acid, rendering the metal ions more uniformly scattered on the SiO(2) surface. Strikingly, the LMO/SiO(2)-SD sample exhibited the optimum catalytic performance (T (90) at 246 degrees C) and the highest N(2) selectivity, which was mainly ascribed to its abundant surface acid sites, superior low-temperature reducibility and higher ratio of surface Mn(4+) species. The apparent activation energy (E (a)) for n-butylamine oxidation over LMO/SiO(2)-SD sample was 29.0 kJ mol(-1). Furthermore, the reaction mechanism of n-butylamine oxidation was investigated by in situ FITR and a reasonable reaction route for n-butylamine oxidation over the LMO/SiO(2)-SD sample was proposed"
Keywords:
Notes:		"PubMed-not-MEDLINEChen, Huawei Yang, Yanran Liu, Qing Cui, Mifen Chen, Xian Fei, Zhaoyang Tao, Zuliang Wang, Minghong Qiao, Xu eng England 2019/03/14 RSC Adv. 2019 Mar 14; 9(15):8454-8462. doi: 10.1039/c8ra10636c. eCollection 2019 Mar 12"