Continuous distribution kinetics for degradation of polystyrene in sub- and supercritical toluene

被引：0
|
作者：
Huang, Ke [1 ]
Tang, Li-Hua [1 ]
Zhu, Zi-Bin [1 ]
Ying, Wei-Yong [1 ]
机构：
[1] Institute of Chemical Technology, East China University of Science and Technology, Shanghai 200237, China
来源：
Journal of Analytical and Applied Pyrolysis | 2006年 / 76卷 / 1-2期
关键词：
When the degradation of polystyrene is carried out above 300 °C; the process of degradation is very complex with concurrent random scission and chain-end scission including depolymerization; intramolecular transfer and followed β-scission which produce volatile products. A quick- depolymerization assumption was proposed to simplify the reaction mechanism of this process. Based on this assumption; continuous distribution kinetics was used to describe the model of polystyrene degradation at the mechanistic level. Toluene was used as solvent to study the sub- and supercritical degradation of polystyrene at 310-370 °C and high yields of volatile products were obtained. The experimental data supported the assumption and determined rate coefficients of random scission and chain-end scission. The activation energies of random scission and chain-end scission; determined from the temperature dependence of the rate coefficients; were; 43.2; and; 42.7; kcal/mol; respectively;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：186 / 190
相关论文
共 50 条
  • [21] Reaction kinetics of D-xylose in sub- and supercritical water
    Aida, Taku Michael
    Shiraishi, Naohiro
    Kubo, Masaki
    Watanabe, Masaru
    Smith, Richard L., Jr.
    [J]. JOURNAL OF SUPERCRITICAL FLUIDS, 2010, 55 (01): : 208 - 216
  • [22] Kraft lignin depolymerisation in sub- and supercritical water using ultrafast continuous reactors. Optimization and reaction kinetics
    Abad-Fernandez, Nerea
    Perez, Eduardo
    Martin, Angel
    Cocero, Maria J.
    [J]. JOURNAL OF SUPERCRITICAL FLUIDS, 2020, 165
  • [23] Continuous-distribution kinetics for degradation of polybutylene terephthalate (PBT) in supercritical methanol
    Huang, Jie
    Yang, Junhe
    Chyu, Minking K.
    Wang, Qingming
    Zhu, Zibin
    [J]. POLYMER DEGRADATION AND STABILITY, 2009, 94 (12) : 2142 - 2148
  • [24] Radical kinetics in sub- and supercritical carbon dioxide: thermodynamic rate tuning
    Ghandi, Khashayar
    McFadden, Ryan M. L.
    Cormier, Philip J.
    Satija, Paras
    Smith, Marisa
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (24) : 8502 - 8505
  • [25] The kinetics of thermal decomposition of ozone dissolved in sub- and supercritical carbon dioxide
    Timofeev, VV
    Lemenovskii, DA
    Zhitnev, YN
    Lunin, VV
    Avdeev, MV
    Popov, VK
    Bagratashvili, VN
    [J]. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY, 2003, 77 (08): : 1293 - 1297
  • [26] The kinetics of thermal decomposition of ozone dissolved in sub- and supercritical carbon dioxide
    Timofeev, V.V.
    Lemenovskij, D.A.
    Zhitnev, Yu.N.
    Lunin, V.V.
    Avdeev, M.V.
    Popov, V.K.
    Bagratashvili, V.N.
    [J]. Zhurnal Fizicheskoj Khimii, 2003, 77 (08): : 1445 - 1451
  • [27] Continuous synthesis of tin and indium oxide nanoparticles in sub- and supercritical water
    Fang, Zhen
    Assaaoudi, Hassane
    Guthrie, Roderick I. L.
    Kozinski, Janusz A.
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (08) : 2367 - 2371
  • [28] Muonium in sub- and supercritical water
    Percival, PW
    Brodovitch, JC
    Ghandi, K
    Addison-Jones, B
    Schüth, J
    Bartels, DM
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (21) : 4999 - 5004
  • [29] Sub- and supercritical jet disintegration
    DeSouza, Shaun
    Segal, Corin
    [J]. PHYSICS OF FLUIDS, 2017, 29 (04)
  • [30] Decrosslinking reaction kinetics of silane-crosslinked polyethylene in sub- and supercritical fluids
    Baek, Bum Ki
    La, Yun Ho
    Lee, Albert S.
    Han, Haksoo
    Kim, Seong Hun
    Hong, Soon Man
    Koo, Chong Min
    [J]. POLYMER DEGRADATION AND STABILITY, 2016, 130 : 103 - 108
12345