Catalytic performance of Pt-Sn/γ-Al2O3 for particulates emission prevention

被引：2
作者：
Corro, G
Fierro, JLG
Montiel, R
Bañuelos, F
机构：
[1] Benemerita Univ Autonoma Puebla, Inst Ciencias, Puebla 72570, Mexico
[2] CSIC, Inst Catalisis & Petr Quim, Madrid 28049, Spain
来源：
CATALYSIS COMMUNICATIONS | 2004年 / 5卷 / 09期
关键词：
particulate emissions; SO2; sulfated Pt-Sn catalysts; carbon residues deposition; coke;
D O I：
10.1016/j.catcom.2004.06.006
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：
Carbon residues deposited on Pt/gamma-Al2O3 and Pt-Sn/gamma-Al2O3 both pre-sulfated, after 12 h Of C3H8-NO-O-2-SO2 reaction were evaluated to determine the effect of Sn addition and of sulfates formation over Pt/gamma-Al2O3. XPS results revealed that while the presence of surface Sn species that may be responsible of the lowering of carbon deposits on the Pt surface, sulfate formation prevents carbon deposition on the support. Results suggest that pre-sulfated 1%Pt-2%Sn/gamma-AI(2)O(3) catalyst can prevent further contributions to particulate formation over the catalyst and can increase catalyst resistance to deactivation during automotive exhaust control. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：547 / 552
页数：6
相关论文
共 25 条
[1]   Lean NOx catalysis for diesel passenger cars: Investigating effects of sulfur dioxide and space velocity [J].
Adams, KM ;
Cavataio, JV ;
Hammerle, RH .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1996, 10 (1-3) :157-181
[2]   A CHEMISORPTION AND XPS STUDY OF BIMETALLIC PT-SN/AL2O3 CATALYSTS [J].
BALAKRISHNAN, K ;
SCHWANK, J .
JOURNAL OF CATALYSIS, 1991, 127 (01) :287-306
[3]   COKE FORMATION ON PLATINUM-ALUMINA CATALYST OF WIDE VARYING DISPERSION [J].
BARBIER, J ;
CORRO, G ;
ZHANG, Y ;
BOURNONVILLE, JP ;
FRANCK, JP .
APPLIED CATALYSIS, 1985, 13 (02) :245-255
[4]  
BARBIER J, 1985, REACT KINET CATAL LE, V29, P77
[5]   PT-SN/AL2O3 CATALYSTS - STUDIES OF THE IMPREGNATION STEP [J].
BARONETTI, GT ;
DEMIGUEL, SR ;
SCELZA, OA ;
FRITZLER, MA ;
CASTRO, AA .
APPLIED CATALYSIS, 1985, 19 (01) :77-85
[6]   A highly sulfur resistant Pt-Sn/γ-Al2O3 catalyst for C3H8-NO-O2 reaction under lean conditions [J].
Corro, G ;
Fierro, JLG ;
Montiel, R ;
Castillo, S ;
Moran, M .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 46 (02) :307-317
[7]   Improved effect on the reduction of NO by propane under oxidizing conditions on sulfated Pt-Sn/Al2O3 catalysts [J].
Corro, G ;
Montiel, R .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2002, 184 (1-2) :443-449
[8]   Method for metal dispersion measurements on Pt-Sn/γ-Al2O3 [J].
Corro, G ;
Aguilar, G ;
Montiel, R ;
Bernes, S .
REACTION KINETICS AND CATALYSIS LETTERS, 2001, 73 (02) :317-323
[9]   Effects of potassium on silica-supported Pt and Pt/Sn catalysts for isobutane dehydrogenation [J].
Cortright, RD ;
Dumesic, JA .
JOURNAL OF CATALYSIS, 1995, 157 (02) :576-583
[10]   Monolithic diesel oxidation catalysts [J].
Farrauto, RJ ;
Voss, KE .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1996, 10 (1-3) :29-51
123