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Effect of Cu substitution on promoted benzene oxidation over porous CuCo-based catalysts derived from layered double hydroxide with resistance of water vapor
Alternative TitleAppl. Catal. B-Environ.
Li, S. D.; Wang, H. S.; Li, W. M.; Wu, X. F.; Tang, W. X.; Chen, Y. F.
2015
Source PublicationApplied Catalysis B-Environmental
Issue0Pages:260-269
Abstract

Porous and dispersed CuCo-based mixed metal oxides catalysts (denoted as CuxCo3-xAl-MMO) are obtained via the calcination of ternary CuxCo3-xAl-layered double hydroxide (LDH) precursors, which exhibit excellent catalytic activity towards complete oxidation of benzene. The Cu0.5Co2,5Al-MMO sample shows the maximum activity of 2.41 mmol g(cat)(-1) h(-1) with 90% benzene conversion at 290 degrees C at a high space velocity (SV=60,000 mLg(-1) h(-1)), comparable to that of only 8% conversion for Cu3Al-MMO sample. The significantly enhanced activity is correlated with higher surface area, narrower pore size, low-temperature reducibility and rich oxygen vacancies and lattice oxygen derived from the synergistic effect over porous and dispersive CuxCo3-xAl-MMO catalysts containing CuO and Co3O4 spinel mixed oxides verified by XRD, BET, H-2-TPR, TEM and XPS measurements. Stability with prolonged time on benzene stream and the resistance to water vapor are further investigated. In addition, a monolithic CuCoAl-MMO film catalyst is fabricated by an in situ growth-calcination method, which displays comparable catalytic activity with CuxCo3-xAl-MMO powder. Therefore, this work provides a facile method for the preparation of CuCo-based catalysts with excellent characters responsible for better catalytic activities, which can be used as promising candidates for practical VOCs oxidation. (C) 2014 Elsevier B.V. All rights reserved.

KeywordCuco-based Catalysts Layered Double Hydroxide Catalytic Oxidation Benzene Water Vapor Volatile Organic-compounds Mixed Oxides Composite Oxides Cobalt Oxide Co Toluene Nanoparticles Combustion Removal Decomposition
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Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11775
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Li, S. D.,Wang, H. S.,Li, W. M.,et al. Effect of Cu substitution on promoted benzene oxidation over porous CuCo-based catalysts derived from layered double hydroxide with resistance of water vapor[J]. Applied Catalysis B-Environmental,2015(0):260-269.
APA Li, S. D.,Wang, H. S.,Li, W. M.,Wu, X. F.,Tang, W. X.,&Chen, Y. F..(2015).Effect of Cu substitution on promoted benzene oxidation over porous CuCo-based catalysts derived from layered double hydroxide with resistance of water vapor.Applied Catalysis B-Environmental(0),260-269.
MLA Li, S. D.,et al."Effect of Cu substitution on promoted benzene oxidation over porous CuCo-based catalysts derived from layered double hydroxide with resistance of water vapor".Applied Catalysis B-Environmental .0(2015):260-269.
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