Conversion of CHF3 to CH2=CF2 via reaction with CH4 in the presence of CBrF3: An experimental and kinetic modelling study

被引：21

作者：

Han, Wenfeng ^{[1
]}

Kennedy, Eric M. ^{[1
]}

Mackie, John C. ^{[1
]}

Dlugogorski, Bogdan Z. ^{[1
]}

机构：

[1] Univ Newcastle, PRCfE Sch Engn, Proc Safety & Environm Protect Res Grp, Callaghan, NSW 2308, Australia

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 180卷 / 1-3期

基金：

澳大利亚研究理事会;

关键词：

Trifluoromethane; Greenhouse gas; Methane; Halon; Vinylidene fluoride; Hydrofluorocarbon; GAS-PHASE REACTION; REAL-TIME; BROMINATION; PYROLYSIS; METHANE; TRIFLUOROMETHANE; DISSOCIATION; FLUOROFORM; DECOMPOSITION; SELECTIVITY;

D O I：

10.1016/j.jhazmat.2010.04.011

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 CHF3 (HFC 23) with CH4 in the presence of CBrF3 (halon 1301) to produce CH2=CF2 (VDF) is presented. Experiments were carried out in a plug-flow reactor at temperatures between 873 and 1173 K. Under these conditions, CH2=CF2 was a dominant product observed, with CH2F2, C2H2, CH2CHF, C2F4, C2H6 and CHFCF2 also detected. In the presence of less than 6000 ppm of CBrF3, the rate of formation of CH2=CF2 is significantly enhanced, and a much lower rate of formation of the major by-product, C2F4 is observed. Further increasing the proportion of CBrF3 in the feed resulted in an even higher rate of formation of CH2=CF2. Experimental results are fitted very well by a model derived from the NIST and GRI-Mech 3.0 mechanisms, modified to include additional published kinetic data. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：181 / 187

页数：7

共 44 条

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