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.
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收藏
页码：1189 / 1191
页数：3
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