Catalysts of alkaline nitrates supported on oxides for the diesel soot combustion. Deactivation by hydro-treatment and CO2

被引：9
作者：
Lucia Ruiz, Maria [1 ]
Daniela Lick, Ileana [2 ]
Isabel Ponzi, Marta [1 ]
Natalia Ponzi, Esther [2 ]
机构：
[1] CONICET UNSL, INTEQUI, RA-5730 San Luis, Argentina
[2] CCT La Plata CONICET UNLP, CINDECA, Dept Quim, Fac Ciencias Exactas, RA-1900 La Plata, Buenos Aires, Argentina
来源：
CATALYSIS COMMUNICATIONS | 2013年 / 34卷
关键词：
Diesel soot; Alkali nitrates; Deactivation; Catalytic combustion; ACTIVE OXYGEN; OXIDATION; CEO2;
D O I：
10.1016/j.catcom.2013.01.011
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 deactivation of supported catalysts CsNO3 and LiNO3 for diesel soot combustion is studied in this work. The effect of hydro-treatment at high temperature and presence of CO2 in feed flow were investigated. Catalysts were characterized by means of X ray diffraction, DSC technique and FTIR. A fixed bed reactor was used to measure activity of fresh and deactivated catalysts with NO2/O-2 feed. Thermogravimetrical system with air/CO2 feed was used to study the deactivation with CO2. Catalysts with LiNO3 were the most resistant to deactivation by hydro-treatment, and they are not deactivated by CO2. It is postulated that the cesium nitrate solubilizes in water and is eliminated during the hydro-treatment, instead, lithium species interacted more strongly with the support and generate more resistance species. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：45 / 51
页数：7
相关论文
共 25 条
  • [1] VOCs removal in the presence of NOx on Cs-Cu/ZrO2 catalysts
    Aissat, Aissa
    Courcot, Dominique
    Cousin, Renaud
    Siffert, Stephane
    [J]. CATALYSIS TODAY, 2011, 176 (01) : 120 - 125
  • [2] Thermally stable ceria-zirconia catalysts for soot oxidation by O2
    Atribak, I.
    Bueno-Lopez, A.
    Garcia-Garcia, A.
    [J]. CATALYSIS COMMUNICATIONS, 2008, 9 (02) : 250 - 255
  • [3] High-throughput approach to the catalytic combustion of diesel soot II: Screening of oxide-based catalysts
    Bassou, Badr
    Guilhaume, Nolven
    Iojoiu, Eduard Emil
    Farrusseng, David
    Lombaert, Karine
    Bianchi, Daniel
    Mirodatos, Claude
    [J]. CATALYSIS TODAY, 2011, 159 (01) : 138 - 143
  • [4] Enhanced soot oxidation by lattice oxygen via La3+-doped CeO2
    Bueno-López, A
    Krishna, K
    Makkee, M
    Moulijn, JA
    [J]. JOURNAL OF CATALYSIS, 2005, 230 (01) : 237 - 248
  • [5] Active oxygen from CeO2 and its role in catalysed soot oxidation
    Bueno - López, A
    Krishna, K
    Makkee, M
    Moulijn, J
    [J]. CATALYSIS LETTERS, 2005, 99 (3-4) : 203 - 205
  • [6] Carrascull A., 2003, THERMOCHIM ACTA, V4, P124
  • [7] Diesel soot combustion.: KNO3 and KOH catalysts supported on zirconia
    Carrascull, Alfredo
    Lick, Ileana D.
    Ponzi, Marta I.
    Ponzi, Esther N.
    [J]. REACTION KINETICS AND CATALYSIS LETTERS, 2008, 94 (01): : 91 - 98
  • [8] Performances of a catalytic foam trap for soot abatement
    Ciambelli, P
    Palma, V
    Russo, P
    Vaccaro, S
    [J]. CATALYSIS TODAY, 2002, 75 (1-4) : 471 - 478
  • [9] Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
    Gross, Martin S.
    Ulla, Maria A.
    Querini, Carlos A.
    [J]. APPLIED CATALYSIS A-GENERAL, 2009, 360 (01) : 81 - 88
  • [10] Comparison of alkali-promoted ZrO2 catalysts towards carbon black oxidation
    Hleis, D.
    Labaki, M.
    Laversin, H.
    Courcot, D.
    Aboukais, A.
    [J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2008, 330 (2-3) : 193 - 200
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