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
[21]   Promotional effect of Mn on Pt/Al2O3 catalysts in HC, CO, and NOx oxidation for controlling diesel emission [J].
Jang, Eun Jeong ;
Kim, Eunseok ;
Oh, Dong Gun ;
Kim, Youngseon ;
Jeon, Jun Hong ;
Han, Hyun Sik ;
Kim, Ji Man ;
Lee, Jaekyoung ;
Kwak, Ja Hun .
CATALYSIS TODAY, 2024, 425
[22]   Pt/MOx/SiO2, Pt/MOx/TiO2, and Pt/MOx/Al2O3 Catalysts for CO Oxidation [J].
Qin, Hongmei ;
Qian, Xiaoshuang ;
Meng, Tao ;
Lin, Yi ;
Ma, Zhen .
CATALYSTS, 2015, 5 (02) :606-633
[23]   2-Propanol dehydration and dehydrogenation on Pt/Al2O3 and Pt/Al2O3-CeO2 catalysts [J].
Perez-Pastenes, H. ;
Nunez-Correa, S. ;
Perez-Lopez, G. ;
Ricardez-Sandoval, L. ;
Viveros-Garcia, T. .
REVISTA MEXICANA DE INGENIERIA QUIMICA, 2021, 20 (02) :1047-1058
[24]   Mechanistic Insights into the NH3 Oxidation Rate and Selectivity Hysteresis on Pt/Al2O3 Catalysts [J].
Bolton, Brandon K. ;
Chovatiya, Amish ;
Russell, Christopher K. ;
Daya, Rohil ;
Trandal, Dylan S. ;
Wei, Lai ;
Reddy, Gunugunuri K. ;
Kamasamudram, Krishna ;
Miller, Jeffrey T. ;
Schneider, William F. ;
Gounder, Rajamani .
ACS CATALYSIS, 2025, :3350-3362
[25]   Oscillatory CO Oxidation Over Pt/Al2O3 Catalysts Studied by In situ XAS and DRIFTS [J].
Alexey Boubnov ;
Andreas Gänzler ;
Sabrina Conrad ;
Maria Casapu ;
Jan-Dierk Grunwaldt .
Topics in Catalysis, 2013, 56 :333-338
[26]   Oscillatory CO Oxidation Over Pt/Al2O3 Catalysts Studied by In situ XAS and DRIFTS [J].
Boubnov, Alexey ;
Gaenzler, Andreas ;
Conrad, Sabrina ;
Casapu, Maria ;
Grunwaldt, Jan-Dierk .
TOPICS IN CATALYSIS, 2013, 56 (1-8) :333-338
[27]   Influence of ammonia on CO and methanol oxidation over Pt/γ-Al2O3 catalysts modified by Mg [J].
Arnby, K ;
Törncrona, A ;
Skoglundh, M .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 49 (01) :51-59
[28]   A transient in situ FTIR and XANES study of CO oxidation over Pt/Al2O3 catalysts [J].
Carlsson, PA ;
Österlund, L ;
Thormählen, P ;
Palmqvist, A ;
Fridell, E ;
Jansson, J ;
Skoglundh, M .
JOURNAL OF CATALYSIS, 2004, 226 (02) :422-434
[29]   Improvement of propane oxidation activity over Pt/Al2O3 by the use of MIXED γ- and χ-Al2O3 supports [J].
Glinrun, Thongchai ;
Mekasuwandumrong, Okorn ;
Panpranot, Joongjai ;
Chaisuk, Choowong ;
Praserthdam, Piyasan .
REACTION KINETICS MECHANISMS AND CATALYSIS, 2010, 100 (02) :441-448
[30]   Stability of Pt/γ-Al2O3 Catalysts in Model Biomass Solutions [J].
Ravenelle, Ryan M. ;
Copeland, John R. ;
Van Pelt, Adam H. ;
Crittenden, John C. ;
Sievers, Carsten .
TOPICS IN CATALYSIS, 2012, 55 (3-4) :162-174
12345