The thermal decomposition of 2,5-dimethylfuran
The thermal decomposition of 2,5-dimethylfuran
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DOI：
10.1016/j.proci.2012.05.066
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发表时间：
2013-01-01
影响因子：
3.4
通讯作者：
Marin, Guy B.
中科院分区：
文献类型：
--
作者：
Djokic, Marko;Carstensen, Hans-Heinrich;Marin, Guy B.
在配备专用在线分析部分（包括 GC x GC-FID/(TOF-MS)）的小型热解装置中研究了 2,5-二甲基呋喃的热分解。该分析部分可以对整个反应器流出物进行定性和定量在线分析，分析的详细程度是前所未见的。反应器温度在 873 K 至 1098 K 之间变化，固定压力为 1.7 bar，停留时间为 300-400 ms，涵盖了 2,5-二甲基呋喃的完整转化范围。低转化率的主要产品是氢气、CO、甲烷、苯酚、2-甲基呋喃、1,3-环戊二烯和C7H10O异构体。转化率越高，形成的单芳烃和多芳烃如苯、甲苯、茚和萘的量就会增加。这些物质似乎是 1,3-环戊二烯的二次反应产物。在最高温度下，超过 10 mol% 的 2,5-二甲基呋喃转化为单、二、三和四芳香族产品，这些产品是已知的烟灰前体。即使在稀释条件下，这种形成分子量增长物质的高趋势也会对 2,5-二甲基呋喃作为燃料的使用构成威胁。 (C) 2012 年燃烧研究所。由爱思唯尔公司出版。保留所有权利。
The thermal decomposition of 2,5-dimethylfuran is studied in a bench-scale pyrolysis set-up equipped with a dedicated on-line analysis section including a GC x GC-FID/(TOF-MS). This analysis section enables both qualitative and quantitative on-line analysis of the entire reactor effluent with an unseen level of detail. The reactor temperature was varied from 873 K to 1098 K at a fixed pressure of 1.7 bar and a residence time of 300-400 ms, covering the complete conversion range of 2,5-dimethylfuran. The main products at low conversions are hydrogen, CO, methane, phenol, 2-methylfuran, 1,3-cyclopentadiene and a C7H10O isomer. At higher conversions increasing amounts of mono-and poly-aromatics such as benzene, toluene, indene and naphthalene are formed. These species appear to be secondary reaction products of 1,3-cyclopentadiene. At the highest temperatures more than 10 mol% of 2,5-dimethylfuran is converted into mono-, di-, tri- and tetra-aromatic products, which are known soot precursors. This high tendency to form molecular weight growths species even under diluted conditions can pose a threat for the use of 2,5-dimethylfuran as a fuel. (C) 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.