An investigation of the role of surface nitrate species in the oxidation of propene on a Pt-based diesel oxidation catalyst

被引：9
作者：
Chansai, Sarayute [1 ]
Burch, Robbie [1 ]
Hardacre, Christopher [1 ]
Oh, Harry [2 ]
Epling, William S. [3 ]
机构：
[1] Queens Univ Belfast, Sch Chem & Chem Engn, CenTACat, Belfast BT9 5AG, Antrim, North Ireland
[2] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
[3] Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77204 USA
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 09期
基金：
英国工程与自然科学研究理事会;
关键词：
SITU FTIR SPECTROSCOPY; NOX STORAGE; SELECTIVE REDUCTION; SORPTION-DESORPTION; NITROGEN-OXIDES; CO OXIDATION; SHORT-TIME; ALUMINA; DISPERSION; SCR;
D O I：
10.1039/c3cy00349c
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：
Enhancing the low temperature activity of diesel oxidation catalysts is important for cold-start conditions and the possible importance of nitrate species in oxidation reactions has been proposed although definitive evidence has not been reported. To investigate the possible role of surface nitrates, their adsorption and reactivity on a Pt-based diesel oxidation catalyst have been investigated using the Short Time on Stream (STOS) transient kinetic technique. The results provide for the first time definitive evidence for the oxidation of propene by some of these nitrate-type species.
引用
收藏
页码：2349 / 2356
页数：8
相关论文
共 45 条
[1]  
Anderson J.A., 2000, Studies in Surface Science Catalysis, V130B, P1331
[2]   Supported platinum catalysts for nitrogen oxide sensors [J].
Benard, S ;
Retailleau, L ;
Gaillard, F ;
Vernoux, P ;
Giroir-Fendler, A .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 55 (01) :11-21
[3]   Study by in situ FTIR spectroscopy of the SCR of NO, by ethanol on Ag/Al2O3 -: Evidence of the role of isocyanate species [J].
Bion, N ;
Saussey, J ;
Haneda, M ;
Daturi, M .
JOURNAL OF CATALYSIS, 2003, 217 (01) :47-58
[4]   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
[5]   Infrared studies of CO oxidation by oxygen and by water over Pt/Al2O3 and Pd/Al2O3 catalysts [J].
Busca, Guido ;
Finocchio, Elisabetta ;
Sanchez Escribano, Vicente .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 113 :172-179
[6]   The storage of nitrogen oxides on alumina-supported barium oxide [J].
Cant, NW ;
Patterson, MJ .
CATALYSIS TODAY, 2002, 73 (3-4) :271-278
[7]   Simultaneous removal of NOx and soot on Pt-Ba/Al2O3 NSR catalysts [J].
Castoldi, L ;
Matarrese, R ;
Lietti, L ;
Forzatti, P .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 64 (1-2) :25-34
[8]   The use of Short Time on Stream (STOS) transient kinetics to investigate the role of hydrogen in enhancing NOx reduction over silver catalysts [J].
Chansai, Sarayute ;
Burch, Robbie ;
Hardacre, Christopher .
JOURNAL OF CATALYSIS, 2012, 295 :223-231
[9]   The use of short time-on-stream in situ spectroscopic transient kinetic isotope techniques to investigate the mechanism of hydrocarbon selective catalytic reduction (HC-SCR) of NOx at low temperatures [J].
Chansai, Sarayute ;
Burch, Robbie ;
Hardacre, Christopher ;
Breen, John ;
Meunier, Frederic .
JOURNAL OF CATALYSIS, 2011, 281 (01) :98-105
[10]   Investigating the mechanism of the H2-assisted selective catalytic reduction (SCR) of NOx with octane using fast cycling transient in situ DRIFTS-MS analysis [J].
Chansai, Sarayute ;
Burch, Robbie ;
Hardacre, Christopher ;
Breen, John ;
Meunier, Frederic .
JOURNAL OF CATALYSIS, 2010, 276 (01) :49-55
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