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Gold-vanadia catalysts supported on ceria-alumina for complete benzene oxidation

被引：80
作者：
Andreeva, D
Nedyalkova, R
Ilieva, L
Abrashev, MV
机构：
[1] Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, Bulgaria
[2] Univ Sofia, Fac Phys, Sofia 1164, Bulgaria
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2004年 / 52卷 / 03期
关键词：
gold-vanadia supported catalysts; ceria-alumina; complete benzene oxidation; X-ray; TPR; Raman spectroscopy;
D O I：
10.1016/j.apcatb.2004.03.019
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：
Gold-vanadia catalysts supported on ceria:alumina with different ratios (1: 1 and 1:4) for complete benzene oxidation (CBO) were studied and compared with the same type of catalysts on pure ceria. These were characterized by means of X-ray, TPR, Raman and ESR spectroscopy. It was established that the catalysts based on ceria:alumina (1:1) exhibited higher activity than that on ceria-alumina (1:4). A correlation between the reducibility of vanadia surface layers in the presence of gold and CBO activity was found. The observed by Raman spectra increased FWHM values of the dominated ceria line in the presence of alumina could be related to the oxygen vacancies formation. The highest stability and activity was exhibited by the gold-vanadia catalyst on ceria-alumina (1:1) and the lowest vanadia loading. Alumina in the mixed support prevents the gold and ceria agglomeration at the extreme operation conditions during the test of stability. (C) 2004 Elsevier B.V. All rights reserved.
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页码：157 / 165
页数：9
相关论文
共 28 条
[1]   Low-temperature water-gas shift reaction over Au/CeO2 catalysts [J].
Andreeva, D ;
Idakiev, V ;
Tabakova, T ;
Ilieva, L ;
Falaras, P ;
Bourlinos, A ;
Travlos, A .
CATALYSIS TODAY, 2002, 72 (1-2) :51-57
[2]   Nanosize gold-ceria catalysts promoted by vanadia for complete benzene oxidation [J].
Andreeva, D ;
Nedyalkova, R ;
Ilieva, L ;
Abrashev, MV .
APPLIED CATALYSIS A-GENERAL, 2003, 246 (01) :29-38
[3]   Complete oxidation of benzene over Au-V2O5/TiO2 and Au-V2O5/ZrO2 catalysts [J].
Andreeva, D ;
Tabakova, T ;
Idakiev, V ;
Naydenov, A .
GOLD BULLETIN, 1998, 31 (03) :105-106
[4]   Nanosize gold catalysts promoted by vanadium oxide supported on titania and zirconia for complete benzene oxidation [J].
Andreeva, D ;
Tabakova, T ;
Ilieva, L ;
Naydenov, A ;
Mehanjiev, D ;
Abrashev, MV .
APPLIED CATALYSIS A-GENERAL, 2001, 209 (1-2) :291-300
[5]  
BOCCUZZI F, 2000, P 9 INT S HET CAT VA, P725
[6]   VANADIUM-OXIDE MONOLAYER CATALYSTS - PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY [J].
BOND, GC ;
TAHIR, SF .
APPLIED CATALYSIS, 1991, 71 (01) :1-31
[7]   Studies of the water-gas-shift reaction on ceria-supported Pt, Pd, and Rh: implications for oxygen-storage properties [J].
Bunluesin, T ;
Gorte, RJ ;
Graham, GW .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 15 (1-2) :107-114
[8]   Catalytic combustion of volatile organic compounds on Au/CeO2/Al2O3 and Au/Al2O3 catalysts [J].
Centeno, MA ;
Paulis, M ;
Montes, M ;
Odriozola, JA .
APPLIED CATALYSIS A-GENERAL, 2002, 234 (1-2) :65-78
[9]   Lanthanide doped V2O5/Al2O3 catalysts:: Structure-activity relationship in the SCR of NOx [J].
Centeno, MA ;
Malet, P ;
Carrizosa, I ;
Odriozola, JA .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (14) :3310-3319
[10]   Oxygen storage capacity measurements of three-way catalysts under transient conditions [J].
Descorme, C ;
Taha, R ;
Mouaddib-Moral, N ;
Duprez, D .
APPLIED CATALYSIS A-GENERAL, 2002, 223 (1-2) :287-299
123