TG-MS与Py-GC相结合法研究惰性气氛下含硫模型化合物热解过程中硫的脱除及释放行为研究

郭慧卿 谢丽丽 王鑫龙 刘粉荣 王美君 胡瑞生

引用本文: 郭慧卿, 谢丽丽, 王鑫龙, 刘粉荣, 王美君, 胡瑞生. TG-MS与Py-GC相结合法研究惰性气氛下含硫模型化合物热解过程中硫的脱除及释放行为研究[J]. 燃料化学学报, 2014, 42(10): 1160-1166. shu
Citation:  GUO Hui-qing, XIE Li-li, WANG Xin-long, LIU Fen-rong, WANG Mei-jun, HU Rui-sheng. Sulfur removal and release behaviors of sulfur-containing model compounds during pyrolysis under inert atmosphere by TG-MS connected with Py-GC[J]. Journal of Fuel Chemistry and Technology, 2014, 42(10): 1160-1166. shu

TG-MS与Py-GC相结合法研究惰性气氛下含硫模型化合物热解过程中硫的脱除及释放行为研究

    通讯作者: 刘粉荣,Tel/Fax:+86-471-4992981;E-mail:fenrongl@163.com,nmgwmj1985@163.com.
  • 基金项目:

    Supported by Natural Science Foundation of China (21466025) (21466025)

    the Natural Science Foundation of Inner Mongolia (2013MS0205) (2013MS0205)

    the State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology(2014). (2014)

摘要: 采用热重-质谱法(TG-MS)和热解-气相色谱法(Py-MS)相结合的方法对模型化合物(十四硫醇、二丁基硫醚、苯硫醚、二甲基噻吩、苯并噻吩和二苯并噻吩等)在惰性气氛下硫的脱除及释放行为进行研究。惰性气氛下硫的脱除顺序为:十四硫醇>二丁基硫醚>二甲基噻吩>苯并噻吩>苯硫醚>二苯并噻吩,苯硫醚除外,该顺序与含硫官能团的热分解顺序一致。在热解过程中,所有模型化合物在质谱和气相色谱仪上均被检测到SO2;除苯硫醚和二苯并噻吩外,其他模型化合物中均检测到了COS;而只在十四硫醇、二丁基硫醚和二甲基噻吩中检测到了H2S。且热解气中SO2含量要显著高于H2S和COS。这是由于活性炭作载体时,惰性气氛下内部氢的含量显著小于内部氧的含量,所以大多数的含硫自由基易与内部氧结合以SO2的形式逸出。对于苯硫醚、苯并噻吩和二苯并噻吩中没有检测到H2S,是由于内部氢的不足,使得含硫自由基不能与内部氢结合,所以没有检测到H2S逸出。

English

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  • 收稿日期:  2014-05-20
  • 网络出版日期:  2014-08-08
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