Remarkable promoting effect of rhodium on the catalytic performance of Ag/Al2O3 for the selective reduction of NO with decane

被引：101
作者：
Sato, K
Yoshinari, T
Kintaichi, Y
Haneda, M
Hamada, H
机构：
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan
[2] Tsukuba Lab, Petr Energy Ctr, Tsukuba, Ibaraki 3058565, Japan
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2003年 / 44卷 / 01期
关键词：
nitrogen monoxide; selective reduction; decane; silver alumina catalyst; rhodium additive; SO2; infrared study;
D O I：
10.1016/S0926-3373(03)00020-1
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 addition of small amounts of rhodium enhanced the activity of Ag/Al2O3 catalyst for the selective reduction of NO with decane at low temperatures. The Rh-promoted Ag/Al2O3 showed its high performance even in the presence of low concentrations Of SO2. Based on the catalytic activity for elementary reactions, it was suggested that the role of added rhodium is to enhance the reaction between NOx and decane-derived species, leading to NO reduction. Catalyst characterization by UV-Vis spectroscopy indicated that the major silver species on Rh-promoted Ag/Al2O3 is Ag-n(delta+) clusters, which would be responsible for the high activity. FT-IR measurements revealed that the formation rate of isocyanate species, which is a major reaction intermediate, is higher on Rh-promoted Ag/Al2O3. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：67 / 78
页数：12
相关论文
共 36 条
[1]   Effect of SO2 on NOx reduction by ethanol over Ag/Al2O3 catalyst [J].
Abe, A ;
Aoyama, N ;
Sumiya, S ;
Kakuta, N ;
Yoshida, K .
CATALYSIS LETTERS, 1998, 51 (1-2) :5-9
[2]   SELECTIVE REDUCTION OF NITRIC-OXIDE WITH PROPENE OVER PLATINUM-GROUP BASED CATALYSTS - STUDIES OF SURFACE SPECIES AND CATALYTIC ACTIVITY [J].
BAMWENDA, GR ;
OGATA, A ;
OBUCHI, A ;
OI, J ;
MIZUNO, K ;
SKRZYPEK, J .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 6 (04) :311-323
[3]   SELECTIVE REDUCTION OF NITROGEN-OXIDES UNDER OXIDIZING EXHAUST-GAS CONDITIONS [J].
BENNETT, CJ ;
BENNETT, PS ;
GOLUNSKI, SE ;
HAYES, JW ;
WALKER, AP .
APPLIED CATALYSIS A-GENERAL, 1992, 86 (02) :L1-L6
[4]   Supported Ag catalysts for the lean reduction of NO with C3H6 [J].
Bethke, KA ;
Kung, HH .
JOURNAL OF CATALYSIS, 1997, 172 (01) :93-102
[5]   Evidence by in situ FTIR spectroscopy and isotopic effect of new assignments for isocyanate species vibrations on Ag/Al2O3 [J].
Bion, N ;
Saussey, J ;
Hedouin, C ;
Seguelong, T ;
Daturi, M .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2001, 3 (21) :4811-4816
[6]   On the nature of the silver phases of Ag/Al2O3 catalysts for reactions involving nitric oxide [J].
Bogdanchikova, N ;
Meunier, FC ;
Avalos-Borja, M ;
Breen, JP ;
Pestryakov, A .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 36 (04) :287-297
[7]   In situ diffuse reflectance infrared Fourier transform spectroscopy study of surface species involved in NOx reduction by ethanol over alumina-supported silver catalyst [J].
Chafik, T ;
Kameoka, S ;
Ukisu, Y ;
Miyadera, T .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 136 (02) :203-211
[8]   SELECTIVITY CHANGES IN THE RING-OPENING REACTION OF METHYLCYCLOPENTANE OVER RHODIUM CATALYSTS CAUSED BY THE ADDITION OF SILVER AND METAL SUPPORT INTERACTIONS [J].
FENOGLIO, RJ ;
NUNEZ, GM ;
RESASCO, DE .
APPLIED CATALYSIS, 1990, 63 (02) :319-332
[9]   Identification of neutral and charged NxOy surface species by IR spectroscopy [J].
Hadjiivanov, KI .
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2000, 42 (1-2) :71-144
[10]   Infrared study of catalytic reduction of nitrogen monoxide by propene over Ag/TiO2-ZrO2 [J].
Haneda, M ;
Kintaichi, Y ;
Inaba, M ;
Hamada, H .
CATALYSIS TODAY, 1998, 42 (1-2) :127-135
1234