Reactivation of sintered Pt/Al2O3 oxidation catalysts

被引：55
作者：
Galisteo, FC
Mariscal, R
Granados, ML
Fierro, JLG
Daley, RA
Anderson, JA
机构：
[1] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain
[2] Univ Aberdeen, Kings Coll, Dept Chem, Surface Chem & Catalysis Grp, Aberdeen AB24 3UE, Scotland
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2005年 / 59卷 / 3-4期
关键词：
diesel oxidation catalyst; sintering; platinum; reactivation; oxychlorination;
D O I：
10.1016/j.apcatb.2005.02.004
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 reactivation of thermally sintered Pt/Al2O3 catalysts used in the simultaneous oxidation of CO and propene has been achieved by an oxychlorination treatment. The catalyst can be considered to model the active component of the catalytic converter fitted to diesel driven cars. Platinum crystallites redispersion was verified by XRD, H-2 chemisorption, TEM and FTIR. The extent of regeneration reflects the platinum particle redispersion achieved by such a treatment. Oxychlorination also introduced electronic effects in the Pt particle caused by the presence of chlorine at the Pt-Al2O3 interface but no detrimental result of this was observed in the oxidation reactions. The results indicate that the deactivation of the diesel oxidation catalysts (DOCs) can be reverted by this simple treatment resulting in a remarkable recovery of the catalytic activity. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：227 / 233
页数：7
相关论文
共 50 条
[11]   Reactivation of CoMo/Al2O3 Hydrotreating Catalysts by Citric Acid [J].
Budukva, Sergey V. ;
Klimov, Oleg V. ;
Chesalov, Yuriy A. ;
Prosvirin, Igor P. ;
Larina, Tatyana V. ;
Noskov, Alexander S. .
CATALYSIS LETTERS, 2018, 148 (05) :1525-1534
[12]   Reactivation of CoMo/Al2O3 Hydrotreating Catalysts by Citric Acid [J].
Sergey V. Budukva ;
Oleg V. Klimov ;
Yuriy A. Chesalov ;
Igor P. Prosvirin ;
Tatyana V. Larina ;
Alexander S. Noskov .
Catalysis Letters, 2018, 148 :1525-1534
[13]   Oxidation of Dichloromethane over Au, Pt, and Pt-Au Containing Catalysts Supported on γ-Al2O3 and CeO2-Al2O3 [J].
Nevanpera, Tuomas K. ;
Pitkaaho, Satu ;
Ojala, Satu ;
Keiski, Riitta L. .
MOLECULES, 2020, 25 (20)
[14]   Investigation of Pt/γ-Al2O3 catalysts with locally high Pt concentrations for oxidation of CO at low temperatures [J].
Arnby, K ;
Törncrona, A ;
Andersson, B ;
Skoglundh, M .
JOURNAL OF CATALYSIS, 2004, 221 (01) :252-261
[15]   Naphthalene oxidation over vanadium-modified Pt catalysts supported on γ-Al2O3 [J].
Edwin Ntainjua Ndifor ;
Tomas Garcia ;
Stuart H. Taylor .
Catalysis Letters, 2006, 110 :125-128
[16]   Naphthalene oxidation over vanadium-modified Pt catalysts supported on γ-Al2O3 [J].
Ndifor, Edwin Ntainjua ;
Garcia, Tomas ;
Taylor, Stuart H. .
CATALYSIS LETTERS, 2006, 110 (1-2) :125-128
[17]   Complete oxidation of ethanol over alkali-promoted Pt/Al2O3 catalysts [J].
Avgouropoulos, George ;
Oikonomopoulos, Evaggelos ;
Kanistras, Dimitrios ;
Ioannides, Theophilos .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 65 (1-2) :62-69
[18]   Characterization of Pt/-γ-Al2O3 catalysts deactivated by hexamethyldisiloxane [J].
Arnby, K ;
Rahmani, M ;
Sanati, M ;
Cruise, N ;
Carlsson, AA ;
Skoglundh, M .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 54 (01) :1-7
[19]   Selective ring opening of methylcyclopentane over Pt/γ-Al2O3, Ir/γ-Al2O3 and Pt-Ir/γ-Al2O3 catalysts with hydrogen at atmospheric pressure [J].
Djeddi, Amel ;
Fechete, Ioana ;
Garin, Francois .
APPLIED CATALYSIS A-GENERAL, 2012, 413 :340-349
[20]   Methane oxidation hysteresis over Pt/Al2O3 [J].
Amin, Ashraf ;
Abedi, Ali ;
Hayes, Robert ;
Votsmeier, Martin ;
Epling, William .
APPLIED CATALYSIS A-GENERAL, 2014, 478 :91-97
12345