SO2 adsorption and desorption characteristics of bimetallic Pd-Pt catalysts: Pd: Pt ratio dependency

被引：30
|
作者：
Wilburn, Monique Shaunta [1 ,2 ]
Epling, William S. [1 ,2 ]
机构：
[1] Univ Virginia, Dept Chem Engn, Charlottesville, VA 22901 USA
[2] Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77004 USA
来源：
CATALYSIS TODAY | 2019年 / 320卷
基金：
美国国家航空航天局;
关键词：
Pt-Pd bimetallic catalyst; Sulfur poisoning; DIESEL OXIDATION CATALYSTS; SUPPORTED PALLADIUM CATALYSTS; METHANE EMISSIONS ABATEMENT; FAST SCR REACTION; GAMMA-ALUMINA; PT-PD/AL2O3; CATALYSTS; CLAUS CATALYSIS; SULFUR-DIOXIDE; CO ADSORPTION; NOX STORAGE;
D O I：
10.1016/j.cattod.2017.08.054
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
SO2 adsorption and desorption, and species formed, on Pd/Pt bimetallic, gamma-Al2O3 supported catalysts were characterized as a function of Pd/Pt ratio using DRIFTS and TPD studies. Catalysts with a high Pd content tended to form a greater amount of aluminum sulfate species, which decomposed at high temperature. In contrast, low Pd content catalysts tended to form a greater amount of low-temperature decomposing and desorbing species, such as molecular SO2 and alumina surface sulfite. The amount of SO2 adsorbed and later desorbed during TPD decreased with increasing Pt content in the bimetallic Pd-Pt/Al2O3 catalysts.
引用
收藏
页码：11 / 19
页数：9
相关论文
共 50 条
  • [1] A Summary of Sulfur Deactivation, Desorption, and Regeneration Characteristics of Mono- and Bimetallic Pd-Pt Methane Oxidation Catalysts: Pd:Pt Mole Ratio and Particle Size Dependency
    Wilburn M.S.
    Epling W.S.
    Emission Control Science and Technology, 2018, 4 (2) : 78 - 89
  • [2] SO2 adsorption and desorption characteristics of Pd and Pt catalysts: Precious metal crystallite size dependence
    Wilburn, Monique Shaunta
    Epling, William S.
    APPLIED CATALYSIS A-GENERAL, 2017, 534 : 85 - 93
  • [3] SO2 oxidation over monometallic and bimetallic Pt and Pd catalysts
    Epling, William
    Wilburn, Monique
    Cortez-Reyes, Marina
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2019, 257
  • [4] Bimetallic Pd-Pt/γ-Al2O3 catalysts for complete methane oxidation: the effect of the Pt: Pd ratio
    Khudorozhkov, A. K.
    Bukhtiyarov, A. V.
    Gerasimov, E. Yu.
    Prosvirin, I. P.
    Bukhtiyarov, V. I.
    RUSSIAN CHEMICAL BULLETIN, 2015, 64 (12) : 2802 - 2805
  • [5] Effect of Pd/Pt ratio on the reactivity of methane catalytic combustion in bimetallic Pd-Pt catalyst
    Geng, Haojie
    Zhang, Li
    Yang, Zhongqing
    Yan, Yunfei
    Ran, Jingyu
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2018, 43 (24) : 11069 - 11078
  • [6] Characterisation and microstructure of Pd and bimetallic Pd-Pt catalysts during methane oxidation
    Persson, Katarina
    Jansson, Kjell
    Jaras, Sven G.
    JOURNAL OF CATALYSIS, 2007, 245 (02) : 401 - 414
  • [7] In situ Activation of Bimetallic Pd-Pt Methane Oxidation Catalysts
    Karinshak, Kyle A.
    Lott, Patrick
    Harold, Michael P.
    Deutschmann, Olaf
    CHEMCATCHEM, 2020, 12 (14) : 3712 - 3720
  • [8] Kinetic consequences of methane combustion on Pd, Pt and Pd-Pt catalysts
    Qi, Wenjie
    Ran, Jingyu
    Wang, Ruirui
    Du, Xuesen
    Shi, Jun
    Niu, Juntian
    Zhang, Peng
    Ran, Mingchu
    RSC ADVANCES, 2016, 6 (111): : 109834 - 109845
  • [9] The role of Pd-Pt Interactions in the Oxidation and Sulfur Resistance of Bimetallic Pd-Pt/γ-Al2O3 Diesel Oxidation Catalysts
    Phuoc Hoang Ho
    Woo, Jung-Won
    Ilmasani, Rojin Feizie
    Han, Joonsoo
    Olsson, Louise
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2021, 60 (18) : 6596 - 6612
  • [10] The role of Pd-Pt interactions in the oxidation and sulfur resistance of bimetallic Pd-Pt/γ-Al2O3diesel oxidation catalysts
    Ho, Phuoc Hoang
    Woo, Jung-Won
    Ilmasani, Rojin Feizie
    Han, Joonsoo
    Olsson, Louise
    Industrial and Engineering Chemistry Research, 2021, 60 (18): : 6596 - 6612
12345