Catalytic depolymerization of waste polyethylene terephthalate plastic in supercritical ethanol by ZnO/?-Al2O3 catalyst

被引：18
|
作者：
Yang, Yayong [1 ]
Chen, Feng [1 ]
Shen, Tianchi [1 ]
Pariatamby, Agamuthu [3 ]
Wen, Xiaoqiang [1 ]
Yan, Mi [1 ,2 ]
Kanchanatip, Ekkachai [4 ,5 ]
机构：
[1] Zhejiang Univ Technol, Inst Energy & Power Engn, Hangzhou 310014, Peoples R China
[2] Zhejiang Univ Technol, Zhejiang Carbon Neutral Innovat Inst, Hangzhou 310014, Peoples R China
[3] Sunway Univ, Jeffrey Sachs Ctr Sustainable Dev, Bandar Sunway 47500, Malaysia
[4] Kasetsart Univ Chalaermphrakiat Sakon Nakhon Prov, Fac Sci & Engn, Dept Civil & Environm Engn, Sakon Nakhon 47000, Thailand
[5] Thammasat Univ, Fac Engn, Ctr Excellence Environm Catalysis & Adsorpt, Pathum Thani 12120, Thailand
来源：
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2023年 / 173卷
基金：
中国国家自然科学基金;
关键词：
Waste PET; Diethyl terephthalate; Supercritical ethanol; ZnO; Recycling; POLY(ETHYLENE-TEREPHTHALATE); PET; DEGRADATION; TEMPERATURE;
D O I：
10.1016/j.psep.2023.04.001
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In order to minimize the environmental impact from polyethylene terephthalate (PET) plastic waste, catalytic depolymerization was employed to break down PET into useful diethyl terephthalate (DET) monomers. This research investigated the depolymerization of waste PET in supercritical ethanol (SCE) catalyzed by ZnO/gamma-Al2O3 catalysts. The effect of the types of gamma-Al2O3 (neutral and acidic) support, ZnO loading and catalyst dosage were studied. The catalytic efficiency of the catalysts was evaluated by the yield of DET obtained from the catalytic depolymerization of waste PET in SCE at 270 degrees C and 60 min reaction time. The results revealed that the highest DET yield of 92.2% could be obtained with 7.5 wt% ZnO supported on acidic gamma-Al2O3 with catalyst dosage of 5% by weight of waste PET. NMR analysis indicated that the catalytic depolymerization process was complete since there were no PET polymer residues in the liquid. In addition, the ZnO/gamma-Al2O3 catalyst also had good stability after five cycles of reuse, its catalytic activity was still satisfactory. The findings suggested that catalytic depo-lymerization in SCE is a promising alternative for converting waste PET into valuable materials.
引用
收藏
页码：881 / 892
页数：12
相关论文
共 50 条
  • [1] Monomer production from supercritical ethanol depolymerization of PET plastic waste using Ni-ZnO/Al2O3 catalyst
    Yang, Yayong
    Sun, Hongyu
    Liu, Zihao
    Wang, Haocheng
    Zheng, Rendong
    Kanchanatip, Ekkachai
    Yan, Mi
    WASTE MANAGEMENT, 2024, 190 : 318 - 328
  • [2] Conversion of Sapropel on СоМо/Al2O3 Catalyst in Supercritical Ethanol
    O. I. Krivonos
    E. N. Terekhova
    A. V. Babenko
    A. B. Arbuzov
    O. B. Belskaya
    Petroleum Chemistry, 2021, 61 : 139 - 146
  • [3] Effect of operating parameters on monomer production from depolymerization of waste polyethylene terephthalate in supercritical ethanol
    Yan, Mi
    Yang, Yayong
    Shen, Tianchi
    Grisdanurak, Nurak
    Pariatamby, Agamuthu
    Khalid, Mohammad
    Hantoko, Dwi
    Wibowo, Haryo
    PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, 2023, 169 : 212 - 219
  • [4] Conversion of Sapropel on Co\Mo/Al2O3 Catalyst in Supercritical Ethanol
    Krivonos, O., I
    Terekhova, E. N.
    Babenko, A., V
    Arbuzov, A. B.
    Belskaya, O. B.
    PETROLEUM CHEMISTRY, 2021, 61 (02) : 139 - 146
  • [5] Transetherification of guaiacol to o-ethoxyphenol with gamma Al2O3 as a catalyst in supercritical ethanol
    Yang, Le
    Seshan, K.
    Li, Yongdan
    CATALYSIS COMMUNICATIONS, 2013, 30 : 36 - 39
  • [6] Experimental study of the catalytic dehydration of ethanol to ethylene on a γ-Al2O3 catalyst
    College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    Beijing Huagong Daxue Xuebao, 2007, 5 (449-452):
  • [7] Surface and catalytic properties of Al2O3, CuO/Al2O3 and ZnO/Al2O3 systems
    El-Nabarawy, Th.
    Attia, A.A.
    Hassan, N.A.
    Youssef, A.M.
    Adsorption Science and Technology, 1995, 12 (02):
  • [8] USY/ZnO/Al2O3 catalyst for gasoline desulfurization via catalytic cracking
    Li, CY
    Shan, HH
    Zhao, BY
    Yang, CH
    Zhang, JF
    ACTA PHYSICO-CHIMICA SINICA, 2001, 17 (07) : 641 - 644
  • [9] Linear α-alcohols production from supercritical ethanol over Cu/Al2O3 catalyst
    Chistyakov, A. V.
    Nikolaev, S. A.
    Zharova, P. A.
    Tsodikov, M. V.
    Manenti, F.
    ENERGY, 2019, 166 : 569 - 576
  • [10] AN ANALYTICAL AND EXPERIMENTAL STUDY OF ETHANOL STEAM REFORMING WITH Cu/ZnO/Al2O3 CATALYST
    Okuhigashi, Yuki
    Shinoki, Toshio
    Sono, Yuichi
    Funaki, Jiro
    Hirata, Katsuya
    PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON POWER ENGINEERING 2009 (ICOPE-09), VOL 2, 2009, : 255 - 260
12345