XPS STUDIES OF NO SELECTIVE REDUCTION CATALYSTS AFTER SO2 POISONING

被引:12
作者
GRZYBEK, T
KLINIK, J
BUCZEK, B
机构
[1] Faculty of Fuels and Energy, University of Mining and Metallurgy, Kraków
关键词
D O I
10.1002/sia.740231204
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effect of an SO2-water vapour-air mixture on the structure of Fe3+-, CU2+-, CO2+- or Ni2+-active carbon catalysts used for selective catalytic reduction of NO with ammonia was studied by low-temperature argon sorption and XPS. Active material reacted with oxidation products of SO2 to form appropriate sulphates. The reaction rate, expressed as surface sulphur-to-cation ratio, depended on the distribution of active material on the starting samples. The distribution of Fe3+, Cu2+, Ni2+ and Co2+ changed during the reaction as a result of movement of the cations into the porous system and was accompanied by some decrease in specific surface area and partial blocking of micropores.
引用
收藏
页码:815 / 822
页数:8
相关论文
共 31 条
[1]  
Bosch H., 1988, CATAL TODAY, V2, P369, DOI DOI 10.1016/0920-5861(88)80002-6
[2]   CORE AND VALENCE LEVEL PHOTOEMISSION STUDIES OF IRON-OXIDE SURFACES AND OXIDATION OF IRON [J].
BRUNDLE, CR ;
CHUANG, TJ ;
WANDELT, K .
SURFACE SCIENCE, 1977, 68 (01) :459-468
[3]   COMBINED DESOX DENOX REACTIONS ON A COPPER ON ALUMINA SORBENT CATALYST .3. DENOX BEHAVIOR AS A FUNCTION OF THE SURFACE COVERAGE WITH SULFATE SPECIES [J].
CENTI, G ;
PASSARINI, N ;
PERATHONER, S ;
RIVA, A ;
STELLA, G .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (08) :1963-1970
[4]   GENERAL FORMALISM FOR QUANTITATIVE AUGER ANALYSIS [J].
CHANG, CC .
SURFACE SCIENCE, 1975, 48 (01) :9-21
[5]   X-RAY PHOTOEMISSION OF PB AND SN PARTICLES SUPPORTED ON CARBON [J].
CHEUNG, TTP .
CHEMICAL PHYSICS LETTERS, 1984, 110 (02) :219-222
[6]  
DWYER DJ, 1984, APPL SURF SCI, V19, P14
[7]   XPS INTENSITIES AND BINDING-ENERGY SHIFTS AS METAL DISPERSION PARAMETERS IN NI/SIO2 CATALYSTS [J].
GONZALEZELIPE, AR ;
MUNUERA, G ;
ESPINOS, JP .
SURFACE AND INTERFACE ANALYSIS, 1990, 16 (1-12) :375-379
[8]   THE INFLUENCE OF THE SUPPORT STRUCTURE ON THE IRON DISTRIBUTION FOR FE-3+-ACTIVE CARBON CATALYSTS [J].
GRZYBEK, T .
FUEL, 1990, 69 (05) :604-607
[9]   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
[10]  
GRZYBEK T, 1994, POL J CHEM, V68, P1649