Gas-phase reaction of CCl2F2 (CFC-12) with methane

被引：17
|
作者：
Uddin, MA [1 ]
Kennedy, EM [1 ]
Dlugogorski, BZ [1 ]
机构：
[1] Univ Newcastle, Sch Engn, Proc Safety & Environm Protect Grp, Callaghan, NSW 2308, Australia
来源：
CHEMOSPHERE | 2003年 / 53卷 / 09期
关键词：
CFC-12; methane; dehydrohalogenation; difluoroethylene;
D O I：
10.1016/S0045-6535(03)00658-1
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Gas-phase reaction of CFC-12 (CCl2F2) with methane was carried out in a plug flow reactor over the temperature range of 873-1123 K. The major organic halocarbons formed during the reaction were C2F4, C2H2F2, CHClF2, CH3Cl, C3H2F6 and CCl3F. The formation of all products except C2H2F2 decreased with temperature, while the selectivity to C2H2F2 (difluoroethylene) increased with temperature and reached approximate to80% at 1123 K. Under these reaction conditions, methane acts as hydrogen and carbon source, resulting in the formation of an unsaturated C-2 hydrofluorocarbon from two C-1 precursors. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1189 / 1191
页数：3
相关论文
共 50 条
  • [21] Mechanistic study of the selective hydrogenolysis of CCl2F2 (CFC-12) into CH2F2 (HFC-32) over palladium on activated carbon
    vandeSandt, EJAX
    Wiersma, A
    Makkee, M
    vanBekkum, H
    Moulijn, JA
    RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS-JOURNAL OF THE ROYAL NETHERLANDS CHEMICAL SOCIETY, 1996, 115 (11-12): : 505 - &
  • [22] Development of a satisfactory palladium on activated carbon catalyst for the selective hydrogenolysis of CCl2F2 (CFC-12) into CH2F2 (HFC-32)
    Makkee, M
    van de Sandt, EJAX
    Wiersma, A
    Moulijn, JA
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 134 (1-3) : 191 - 200
  • [23] Development of a palladium on activated carbon for a conceptual process in the selective hydrogenolysis of CCl2F2 (CFC-12) into CH2F2 (HFC-32)
    Makkee, M
    Wiersma, A
    van de Sandt, EJAX
    van Bekkum, H
    Moulijn, JA
    CATALYSIS TODAY, 2000, 55 (1-2) : 125 - 137
  • [24] AN INVESTIGATION OF CFC12 (CCL2F2) DECOMPOSITION ON TIO2 CATALYST
    KARMAKAR, S
    GREENE, HL
    JOURNAL OF CATALYSIS, 1995, 151 (02) : 394 - 406
  • [25] Hydrodechlorination of CH2Cl2 over Pd/γ-Al2-O3.: Correlation with the hydrodechlorination of CCl2F2 (CFC-12)
    Malinowski, A
    Lomot, D
    Karpinski, Z
    APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 19 (02) : L79 - L86
  • [26] Selection of activated carbon for the selective hydrogenolysis of CCl2F2 (CFC-12) into CH2F2 (HFC-32) over palladium-supported catalysts
    van de Sandt, EJAX
    Wiersma, A
    Makkee, M
    van Bekkum, H
    Moulijn, JA
    APPLIED CATALYSIS A-GENERAL, 1998, 173 (02) : 161 - 173
  • [27] Conversion of CCl2F2 (CFC-12) in the presence and absence of H2 on sol-gel derived Pd/Al2O3 catalysts
    Öcal, M
    Maciejewski, M
    Baiker, A
    APPLIED CATALYSIS B-ENVIRONMENTAL, 1999, 21 (04) : 279 - 289
  • [28] Gas-phase and Pd-catalyzed hydrodehalogenation of CBrClF2, CCl2F2, CHClF2, and CH2F2
    Yu, H
    Kennedy, EM
    Uddin, MA
    Sakata, Y
    Dlugogorski, BZ
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (10) : 3442 - 3452
  • [29] HCN FORMATION FROM CCL2F2 (CFC12) OVER IRON GROUP METAL-CATALYSTS
    TAKITA, Y
    IMAMURA, T
    MIZUHARA, Y
    ISHIHARA, T
    JOURNAL OF CATALYSIS, 1992, 136 (02) : 617 - 620
  • [30] Reaction Mechanisms in Both a CCl2F2/O2/Ar and a CCl2F2/H2/Ar RF Plasma Environment
    Ya-Feng Wang
    Wen-Jhy Lee
    Chuh-Yung Chen
    Yo-Ping Greg Wu
    Guo-Ping Chang-Chien
    Plasma Chemistry and Plasma Processing, 2000, 20 : 469 - 494
12345