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
  • [1] Continuous distribution kinetics for degradation of polystyrene in sub- and supercritical toluene
    Huang, K
    Tang, LH
    Zhu, ZB
    Ying, WY
    [J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2006, 76 (1-2) : 186 - 190
  • [2] Continuous distribution kinetics for the degradation of polystyrene in supercritical benzene
    Karmore, V
    Madras, G
    [J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (11) : 4020 - 4023
  • [3] Phase behavior and kinetics of polystyrene degradation in supercritical toluene
    Jie, H.
    Ke, H.
    Lihua, T.
    Jiachun, W.
    Zibin, Z.
    Weiyong, Y.
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2008, 109 (06) : 3596 - 3602
  • [4] Treatment of Polystyrene in Sub- and Supercritical Media
    Zalepugin, D. Yu.
    Tilkunova, N. A.
    Chernyshova, I. V.
    Vlasov, M. I.
    [J]. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B, 2018, 12 (07) : 1125 - 1131
  • [5] Treatment of Polystyrene in Sub- and Supercritical Media
    D. Yu. Zalepugin
    N. A. Tilkunova
    I. V. Chernyshova
    M. I. Vlasov
    [J]. Russian Journal of Physical Chemistry B, 2018, 12 : 1125 - 1131
  • [6] Degradation processes in sub- and supercritical water
    Hirth, T
    Schweppe, R
    Jahnke, S
    Bunte, G
    Eisenreich, N
    Krause, H
    [J]. HIGH PRESSURE CHEMICAL ENGINEERING, 1996, 12 : 163 - 168
  • [7] Muonium kinetics in sub- and supercritical water
    Ghandi, K
    Addison-Jones, B
    Brodovitch, JC
    Kecman, S
    McKenzie, I
    Percival, PW
    [J]. PHYSICA B-CONDENSED MATTER, 2003, 326 (1-4) : 55 - 60
  • [8] Polymer degradation in sub- and supercritical water phase
    Gronwald, P
    Chen, YS
    Kunz, U
    Hoffmann, U
    [J]. CHEMIE INGENIEUR TECHNIK, 1998, 70 (08) : 1030 - 1035
  • [9] Kinetics of the degradation of polystyrene in supercritical acetone
    Oh, Sea Cheon
    Han, Dong Ill
    Kwak, Hyun
    Bae, Seong-Yeol
    Lee, Kyong-Hwan
    [J]. POLYMER DEGRADATION AND STABILITY, 2007, 92 (08) : 1622 - 1625
  • [10] Mechanism and kinetics of cellobiose decomposition in sub- and supercritical water
    Kabyemela, B.M.
    Takigawa, M.
    Adschiri, T.
    Malaluan, R.M.
    Arai, K.
    [J]. Industrial and Engineering Chemistry Research, 1998, 37 (02): : 357 - 361
12345