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.
引用
收藏
页码：45 / 51
页数：7
相关论文
共 50 条
  • [41] Reforming of CH4/CO2 over Pt catalysts supported on CeO2 and CexZr1-ixO2 oxides
    Liaw, BJ
    Chen, YT
    Chen, YZ
    JOURNAL OF THE CHINESE INSTITUTE OF CHEMICAL ENGINEERS, 2005, 36 (03): : 253 - 262
  • [42] Ce-incorporation in mixed oxides obtained by the self-combustion method for the preparation of high performance catalysts for the CO2 reforming of methane
    Enrique Daza, Carlos
    Moreno, Sonia
    Molina, Rafael
    CATALYSIS COMMUNICATIONS, 2010, 12 (03) : 173 - 179
  • [43] Modeling plasma-induced surface charge effects on CO2 activation by single atom catalysts supported on reducible and irreducible metal oxides
    Doherty, Francis
    Goldsmith, Bryan R.
    PLASMA SOURCES SCIENCE & TECHNOLOGY, 2023, 32 (03):
  • [44] Effect of Mo content on oxidative dehydrogenation of propane with CO2 over ZnOx catalysts supported on Mo-Zr mixed-oxides
    Chung, Iljun
    Jeong, Hyunjun
    Lee, Dongmin
    Oh, Jungmok
    Seo, Okkyun
    Tayal, Akhil
    Yun, Yongju
    CATALYSIS TODAY, 2024, 425
  • [45] Bimetallic alkaline thermal treatment catalysts for enhanced H2 production with suppressed CO2 formation from unconventional biomass
    Li, Wanlu
    Chen, Jingguang
    Park, Ah-Hyung
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2019, 258
  • [46] Alkali/alkaline-earth metal-modified MnOx supported on three-dimensionally ordered macroporous–mesoporous TixSi1-xO2 catalysts:Preparation and catalytic performance for soot combustion
    Chao Peng
    Di Yu
    Chunlei Zhang
    Maozhong Chen
    Lanyi Wang
    Xuehua Yu
    Xiaoqiang Fan
    Zhen Zhao
    Kai Cheng
    Yongsheng Chen
    Yuechang Wei
    Jian Liu
    Journal of Environmental Sciences, 2023, 125 (03) : 82 - 94
  • [47] Interface interaction induced oxygen activation of cactus-like Co3O4/OMS-2 nanorod catalysts in situ grown on monolithic cordierite for diesel soot combustion
    Yang, Yuexi
    Zhao, Dongyue
    Gao, Zhongnan
    Tian, Ye
    Ding, Tong
    Zhang, Jing
    Jiang, Zheng
    Li, Xingang
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2021, 286
  • [48] Alkali/alkaline-earth metal-modified MnOx supported on three-dimensionally ordered macroporous-mesoporous TixSi1-xO2 catalysts: Preparation and catalytic performance for soot combustion
    Peng, Chao
    Yu, Di
    Zhang, Chunlei
    Chen, Maozhong
    Wang, Lanyi
    Yu, Xuehua
    Fan, Xiaoqiang
    Zhao, Zhen
    Cheng, Kai
    Chen, Yongsheng
    Wei, Yuechang
    Liu, Jian
    JOURNAL OF ENVIRONMENTAL SCIENCES, 2023, 125 : 82 - 94
  • [49] Operando Raman spectroscopy on CO2 methanation over alumina-supported Ni, Ni3Fe and NiRh0.1 catalysts: Role of carbon formation as possible deactivation pathway
    Mutz, Benjamin
    Sprenger, Paul
    Wang, Wu
    Wang, Di
    Kleist, Wolfgang
    Grunwaldt, Jan-Dierk
    APPLIED CATALYSIS A-GENERAL, 2018, 556 : 160 - 171
  • [50] Ordered mesoporous MgO-Al2O3 composite oxides supported Ni based catalysts for CO2 reforming of CH4: Effects of basic modifier and mesopore structure
    Xu, Leilei
    Song, Huanling
    Chou, Lingjun
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2013, 38 (18) : 7307 - 7325
12345