Yi-jun Zhang, Wen-hao Yuan, Jiang-huai Cai, Li-dong Zhang, Fei Qi, Yu-yang Li. Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure[J]. Chinese Journal of Chemical Physics , 2013, 26(2): 151-156. doi: 10.1063/1674-0068/26/02/151-156
Citation: Yi-jun Zhang, Wen-hao Yuan, Jiang-huai Cai, Li-dong Zhang, Fei Qi, Yu-yang Li. Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure[J]. Chinese Journal of Chemical Physics , 2013, 26(2): 151-156. doi: 10.1063/1674-0068/26/02/151-156

Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure

doi: 10.1063/1674-0068/26/02/151-156
Funds:  This work is supported by the National Nat-ural Science Foundation of China (No.51106146, No.51036007, No.U1232127), the China Postdoc-toral Science Foundation (No.20100480047 and No.201104326), the Chinese Universities Scientific Fund (No.WK2310000010), the Anhui Science & Technology Department (No.11040606Q49), and the Chinese Academy of Sciences.
  • Received Date: 2013-01-08
  • The pyrolysis of n-butane and i-butane at low pressure was investigated from 823-1823 K in an electrically heated flow reactor using synchrotron vacuum ultraviolet photoionization mass spectrometry. More than 20 species, especially several radicals and isomers, were detected and identified from the measurements of photoionization efficiency (PIE) spectra. Based on the mass spectrometric analysis, the characteristics of n-butane and i-butane pyrolysis were discussed, which provided experimental evidences for the discussion of decomposition pathways of butane isomers. It is concluded that the isomeric structures of n-butane and i-butane have strong influence on their main decomposition pathways, and lead to dramatic differences in their mass spectra and PIE spectra such as the different dominant products and isomeric structures of butene products. Furthermore, compared with n-butane, i-butane can produce strong signals of benzene at low temperature in its pyrolysis due to the enhanced formation of benzene precursors like propargyl and C4 species, which provides experimental clues to explain the higher sooting tendencies of iso-alkanes than n-alkanes.
  • 加载中
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(3222) PDF downloads(1854) Cited by()

Proportional views
Related

Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure

doi: 10.1063/1674-0068/26/02/151-156
Funds:  This work is supported by the National Nat-ural Science Foundation of China (No.51106146, No.51036007, No.U1232127), the China Postdoc-toral Science Foundation (No.20100480047 and No.201104326), the Chinese Universities Scientific Fund (No.WK2310000010), the Anhui Science & Technology Department (No.11040606Q49), and the Chinese Academy of Sciences.

Abstract: The pyrolysis of n-butane and i-butane at low pressure was investigated from 823-1823 K in an electrically heated flow reactor using synchrotron vacuum ultraviolet photoionization mass spectrometry. More than 20 species, especially several radicals and isomers, were detected and identified from the measurements of photoionization efficiency (PIE) spectra. Based on the mass spectrometric analysis, the characteristics of n-butane and i-butane pyrolysis were discussed, which provided experimental evidences for the discussion of decomposition pathways of butane isomers. It is concluded that the isomeric structures of n-butane and i-butane have strong influence on their main decomposition pathways, and lead to dramatic differences in their mass spectra and PIE spectra such as the different dominant products and isomeric structures of butene products. Furthermore, compared with n-butane, i-butane can produce strong signals of benzene at low temperature in its pyrolysis due to the enhanced formation of benzene precursors like propargyl and C4 species, which provides experimental clues to explain the higher sooting tendencies of iso-alkanes than n-alkanes.

Yi-jun Zhang, Wen-hao Yuan, Jiang-huai Cai, Li-dong Zhang, Fei Qi, Yu-yang Li. Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure[J]. Chinese Journal of Chemical Physics , 2013, 26(2): 151-156. doi: 10.1063/1674-0068/26/02/151-156
Citation: Yi-jun Zhang, Wen-hao Yuan, Jiang-huai Cai, Li-dong Zhang, Fei Qi, Yu-yang Li. Product Identification and Mass Spectrometric Analysis of n-Butane and i-Butane Pyrolysis at Low Pressure[J]. Chinese Journal of Chemical Physics , 2013, 26(2): 151-156. doi: 10.1063/1674-0068/26/02/151-156

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return