Combustion of Methane in Lean Mixtures over Bulk Transition-Metal Oxides: Evaluation of the Activity and Self-Deactivation

被引：68
作者：
Paredes, Jose R. [1 ]
Diaz, Eva [1 ]
Diez, Fernando V. [1 ]
Ordonez, Salvador [1 ]
机构：
[1] Univ Oviedo, Dept Chem Engn & Environm Technol, E-33006 Oviedo, Spain
来源：
ENERGY & FUELS | 2009年 / 23卷 / 1-2期
关键词：
PROGRAMMED REDUCTION PROFILES; HIGH-TEMPERATURE COMBUSTION; VOLATILE ORGANIC-COMPOUNDS; CATALYTIC COMBUSTION; RED MUD; OXIDATION; NICKEL; IRON; MN; LA;
D O I：
10.1021/ef800704e
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Different bulk transition-metal oxides (NiO, CuO, Mn2O3, Cr2O3, and C0304) were prepared, by precipitation from nitrate precursors, and tested for the combustion of methane-air lean mixtures (1000-5000 ppmv of CH4). Catalyst performances were compared in terms of both intrinsic activity and resistance to self-deactivation. Methane combustion experiments were carried out at ambient pressure and a space velocity of 62 h(-1) [weight hourly space velocity (WHSV)]. The activity of the studied catalysts (determined by the recording of light-off curves in the interval of 250-600 degrees C decreases in the order: Co3O4 > Mn2O2 > Cr2O3 > CuO > NiO. However, deactivation studies, carried out both at constant temperature (620 degrees C) and in hysteresis experiments, reveal that Mn2O3 is the most stable catalyst.
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收藏
页码：86 / 93
页数：8
相关论文
共 39 条
[11]   Transient oxidation of volatile organic compounds on a CuO/Al2O3 catalyst [J].
Cordi, EM ;
O'Neill, PJ ;
Falconer, JL .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 14 (1-2) :23-36
[12]   Preparation and characterisation of SrTi1-x-yZrxMnyO3 solid solution powders in relation to their use in combustion catalysis [J].
Daturi, M ;
Busca, G ;
Groppi, G ;
Forzatti, P .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 12 (04) :325-337
[13]   Catalytic combustion of hexane over transition metal modified zeolites NaX and CaA [J].
Díaz, E ;
Ordóñez, S ;
Vega, A ;
Coca, J .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 56 (04) :313-322
[14]   Oxidation of methane over palladium catalysts:: effect of the support [J].
Escandón, LS ;
Ordóñez, S ;
Vega, A ;
Díez, FV .
CHEMOSPHERE, 2005, 58 (01) :9-17
[15]   Hydrothermal stabilization by lanthanum of mixed metal oxides and noble metal catalysts for volatile organic compound removal [J].
Ferrandon, M ;
Björnbom, E .
JOURNAL OF CATALYSIS, 2001, 200 (01) :148-159
[16]   A STUDY OF ANOMALOUS TEMPERATURE-PROGRAMMED REDUCTION PROFILES OF CU2O, CUO, AND CUO-ZNO CATALYSTS [J].
FIERRO, G ;
LOJACONO, M ;
INVERSI, M ;
PORTA, P ;
LAVECCHIA, R ;
CIOCI, F .
JOURNAL OF CATALYSIS, 1994, 148 (02) :709-721
[17]   THE ACTIVATION OF HYDROCARBON C-H BONDS OVER TRANSITION-METAL OXIDE CATALYSTS - A FTIR STUDY OF HYDROCARBON CATALYTIC COMBUSTION OVER MGCR2O4 [J].
FINOCCHIO, E ;
BUSCA, G ;
LORENZELLI, V ;
WILLEY, RJ .
JOURNAL OF CATALYSIS, 1995, 151 (01) :204-215
[18]   Complete oxidation of methane at low temperature over noble metal based catalysts:: a review [J].
Gélin, P ;
Primet, M .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 39 (01) :1-37
[19]  
Golodets G.I., 1983, Heterogeneous Catalytic Reactions Involving Molecular Oxygen
[20]   Combustion of medium concentration CH4-air mixtures in non-stationary reactors [J].
Hevia, Miguel A. G. ;
Fissore, Davide ;
Ordonez, Salvador ;
Diez, Fernando V. ;
Barresi, Antonello A. .
CHEMICAL ENGINEERING JOURNAL, 2007, 131 (1-3) :343-349
1234