Catalytic hydrodechlorination of chlorinated olefins over a Pd/Al2O3 catalyst:: Kinetics and inhibition phenomena

被引:42
|
作者
Ordóñez, S [1 ]
Díez, FV [1 ]
Sastre, H [1 ]
机构
[1] Univ Oviedo, Dept Environm Chem & Engn, E-33006 Oviedo, Spain
关键词
D O I
10.1021/ie010679v
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The gas-phase hydrodechlorination of tetrachloroethene (TTCE), trichloroethene (TCE), and 1,1-dichloroethene (DCE) dissolved in toluene over a commercial Pd/Al2O3 (0.15% Pd) catalyst has been studied in a fixed-bed reactor working at space times in the range of 0-5 min(.)g/mmol of organochlorinated compound. The study includes both the influence of the temperature (in the range of 175-300 degreesC) on the kinetics of the hydrodechlorination of the single compounds and the kinetics for mixtures of these compounds at 250 degreesC. The observed order in reactivity is DCE > TCE > TTCE. The influence of the temperature on the kinetics can be satisfactorily modeled by a pseudo-first-order model and by considering an Arrhenius dependence for the kinetic constant. Important inhibition phenomena have been found by working with mixtures of organochlorinated compounds. These phenomena can be modeled considering a Langmuir-Hinshelwood model in which hydrogen (dissociatively chemisorbed) and all of the organochlorinated compounds are adsorbed in the same active sites.
引用
收藏
页码:505 / 511
页数:7
相关论文
共 50 条
  • [41] Mechanism and kinetics of NO oxidation over Pt/γ-Al2O3 catalyst
    Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
    Huagong Xuebao, 2008, 5 (1156-1164):
  • [42] Reaction kinetics of thiophene catalytic hydrodesulfurization over Co-Mo/Al2O3 catalyst
    2001, Beijing University of Chemical Technology (28):
  • [43] Regeneration of Pd/Al2O3 catalysts used for tetrachloroethylene hydrodechlorination
    Ordonez, Salvador
    Diaz, Eva
    Diez, Fernando V.
    Sastre, Herminio
    REACTION KINETICS AND CATALYSIS LETTERS, 2007, 90 (01): : 101 - 106
  • [44] A comparison of the catalytic hydrogenation of 2-amylanthraquinone and 2-ethylanthraquinone over a Pd/Al2O3 catalyst
    Enxian Yuan
    Xiangwei Ren
    Li Wang
    Wentao Zhao
    Frontiers of Chemical Science and Engineering, 2017, 11 : 177 - 184
  • [45] A comparison of the catalytic hydrogenation of 2-amylanthraquinone and 2-ethylanthraquinone over a Pd/Al2O3 catalyst
    Yuan, Enxian
    Ren, Xiangwei
    Wang, Li
    Zhao, Wentao
    FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING, 2017, 11 (02) : 177 - 184
  • [46] Regeneration of Pd/Al2O3 catalysts used for tetrachloroethylene hydrodechlorination
    Salvador Ordóñez
    Eva Díaz
    Fernando V. Díez
    Herminio Sastre
    Reaction Kinetics and Catalysis Letters, 2007, 90 : 101 - 106
  • [47] Kinetics of dicyclopentadiene hydrogenation over Pd/Al2O3Catalyst
    Liu, GZ
    Mi, ZT
    Wang, L
    Zhang, XW
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (11) : 3846 - 3851
  • [48] Liquid phase catalytic hydrodechlorination of 2,4-dichlorophenol over Pd/Al2O3: Batch vs. continuous operation
    Gomez-Quero, Santiago
    Cardenas-Lizana, Fernando
    Keane, Mark A.
    CHEMICAL ENGINEERING JOURNAL, 2011, 166 (03) : 1044 - 1051
  • [49] Methane Combustion over Pd/Al2O3 Catalyst: Effects of Chlorine Ions and Water on Catalytic Activity
    Gao Diannan
    Wang Sheng
    Zhang Chunxi
    Yuan Zhongshan
    Wang Shudong
    CHINESE JOURNAL OF CATALYSIS, 2008, 29 (12) : 1221 - 1225
  • [50] Pd-Re/Al2O3:: Characterization and catalytic activity in hydrodechlorination of CCl2F2
    Malinowski, A
    Juszczyk, W
    Bonarowska, M
    Pielaszek, J
    Karpinski, Z
    JOURNAL OF CATALYSIS, 1998, 177 (02) : 153 - 163