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
  • [41] Towards solvothermal upcycling of mixed plastic wastes: Depolymerization pathways of waste plastics in sub- and supercritical toluene
    Saha, Nepu
    Banivaheb, Soudeh
    Reza, M. Toufiq
    ENERGY CONVERSION AND MANAGEMENT-X, 2022, 13
  • [42] Vapor-liquid equilibrium of toluene-polycyclic aromatic hydrocarbon system in sub- and supercritical state
    Kim, CJ
    Won, DB
    Han, KJ
    Park, SJ
    CHINESE JOURNAL OF CHEMICAL ENGINEERING, 2002, 10 (06) : 657 - 660
  • [43] Experimental investigation on the degradation of polymer-containing oily sludge in sub-/supercritical water
    Peng, Pai
    Wang, Gaoyun
    Li, Linhu
    Ge, Hui
    Jin, Hui
    Guo, Liejin
    ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 2023, 45 (01) : 1983 - 1993
  • [44] Hydrolysis of vegetable oils in sub- and supercritical water
    Holliday, RL
    King, JW
    List, GR
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (03) : 932 - 935
  • [45] The partial oxidation of isobutene in sub- and supercritical water
    Richter, T
    Vogel, H
    CHEMICAL ENGINEERING & TECHNOLOGY, 2003, 26 (06) : 688 - 690
  • [46] Waste recycling techniques with sub- or supercritical fluids
    Okajima, Idzumi
    Sako, Takeshi
    Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, 2009, 88 (12): : 1055 - 1059
  • [47] Solubility of Solids in Sub- and Supercritical Fluids: a Review
    Skerget, Mojca
    Knez, Zeljko
    Knez-Hrncic, Masa
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2011, 56 (04): : 694 - 719
  • [48] Extraction of lignite with water in sub- and supercritical states
    Hu, HQ
    Guo, SC
    Hedden, K
    FUEL PROCESSING TECHNOLOGY, 1998, 53 (03) : 269 - 277
  • [49] Liquefaction of Cornstalk in Sub-/Supercritical Cyclohexane with Zeolite
    Tao, Hongxiu
    Xie, Xin'an
    Li, Xian
    Zheng, Chaoyang
    CHEMICAL ENGINEERING & TECHNOLOGY, 2013, 36 (03) : 459 - 466
  • [50] Liquefaction of rice stalk in sub- and supercritical ethanol
    Li, R.-D. (leerd@sau.edu.cn), 1600, Science Press (41):
12345