Study of configuration and coating thickness of vanadium on carbon-coated monoliths in the SCR of NO at low temperature

被引:18
作者
García-Bordejé, E [1 ]
Calvillo, L [1 ]
Lázaro, MJ [1 ]
Moliner, R [1 ]
机构
[1] CSIC, Inst Carboquim, Zaragoza 50015, Spain
关键词
D O I
10.1021/ie0498854
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Different vanadium loadings, viz., 3, 4, 6, and 8 wt %, have been supported on mesoporous carbon-coated monoliths. These catalysts have been tested in the SCR of NO at low temperature. Experiments with different monolith configurations and area velocities have been performed. The conversions of the monoliths placed in series, in parallel, and ground were found to be similar. The latter result indicates that the reaction rate in the monolith is not controlled by diffusion. A one-dimensional model has been applied that predicts reasonably well the results of these experiments. Finally, with this model, we have simulated the effects of varying the carbon coating thickness and cell density on the geometric parameters of the monolith, the pressure drop, the area velocity, and the conversion. As a result, an optimal coating thickness of around 30-40 mum was found.
引用
收藏
页码:4073 / 4079
页数:7
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共 46 条
[11]   Preparation and characterisation of carbon-coated monoliths for catalyst supports [J].
García-Bordejé, E ;
Kapteijn, F ;
Moulijn, JA .
CARBON, 2002, 40 (07) :1079-1088
[12]   Supported manganese catalysts for the selective catalytic reduction of nitrogen oxides with ammonia - Part II. Catalytic experiments [J].
Grzybek, T ;
Pasel, J ;
Papp, H .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (02) :341-348
[13]   SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE BY AMMONIA ON FE3+-PROMOTED ACTIVE-CARBON [J].
GRZYBEK, T ;
PAPP, H .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1992, 1 (04) :271-283
[14]  
GULATI ST, 1998, STRUCTURED CATALYSTS, P15
[15]  
Heck R. M., 2002, CATALYTIC AIR POLLUT
[16]   The application of monoliths for gas phase catalytic reactions [J].
Heck, RM ;
Gulati, S ;
Farrauto, RJ .
CHEMICAL ENGINEERING JOURNAL, 2001, 82 (1-3) :149-156
[17]   MECHANISM OF THE REACTION OF NO AND NH3 ON VANADIUM-OXIDE CATALYST IN THE PRESENCE OF OXYGEN UNDER THE DILUTE GAS CONDITION [J].
INOMATA, M ;
MIYAMOTO, A ;
MURAKAMI, Y .
JOURNAL OF CATALYSIS, 1980, 62 (01) :140-148
[18]  
IRANDOUST S, 1998, STRUCTURED CATALYSTS, P239
[19]   KINETICS OF THE SELECTIVE CATALYTIC REDUCTION OF NO WITH NH3 OVER MN2O3-WO3/GAMMA-AL2O3 [J].
KAPTEIJN, F ;
SINGOREDJO, L ;
DEKKER, NJJ ;
MOULIJN, JA .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1993, 32 (03) :445-452
[20]   VANADIUM-OXIDES (V2OX) CATALYSTS FOR DRY-TYPE AND SIMULTANEOUS REMOVAL OF SULFUR-OXIDES AND NITROGEN-OXIDES WITH AMMONIA AT LOW-TEMPERATURE [J].
KASAOKA, S ;
SASAOKA, E ;
IWASAKI, H .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1989, 62 (04) :1226-1232