DOI QR코드

DOI QR Code

Recovery of Polyethylene Telephthalate Monomer over Cu or Mn/γ-Al2O3 Catalysts

Cu, Mn/γ-Al2O3 촉매상에서 polyethylene telephthalate 단량체의 회수 연구

  • Sim, Jae-Wook (Department of Chemical Engineering, Kangwon National University) ;
  • Kim, Seung-Soo (Department of Chemical Engineering, Kangwon National University)
  • 심재욱 (강원대학교 삼척캠퍼스 화학공학과) ;
  • 김승수 (강원대학교 삼척캠퍼스 화학공학과)
  • Received : 2017.06.02
  • Accepted : 2017.07.12
  • Published : 2017.08.10

Abstract

Polyethylene terephthalate (PET) has been widely applied in polymers and packaging industries to produce synthetic fibers, films, drink bottles or food containers. Therefore, it has become one of the major plastic wastes. In this article, glycolysis known as one of the main methods in PET chemical recycling was investigated using a glycol to break down the polymer into a monomer. Glycolysis of PET and ethylene glycol was performed in a micro-tubing reactor under various conditions. The effect of glycolysis conditions on the product distribution was investigated at experimental conditions of the EG/PET ratio of 1~4, the reaction time of 15~90 min and the reaction temperature of $250{\sim}325^{\circ}C$ with Mn and Cu catalysts. The highest yield of bis (2-hydroxyethyl) terephthalate monomer (BHET) was obtained as 89.46 wt% under the condition of the reaction temperature of $300^{\circ}C$ and the time of 30 min using 10 wt% $Cu/{\gamma}-Al_2O_3$ catalyst, with the PET and ethylene glycol ratio of 1 : 2.

Acknowledgement

Supported by : 강원대학교

References

  1. D.-E. Nikles and M.-S. Farahat, New motivation for the depolymerization products derived from poly(ethylene terephthalate) (PET) Waste: A review, Macromol. Mater. Eng., 290, 13-30 (2005). https://doi.org/10.1002/mame.200400186
  2. C.-W. Neale, N.-C. Hilyard, and P. Barber, Observations on the economics of recycling industrial scrap plastic in new products, Conserv. Recycl., 6, 91-105 (1983). https://doi.org/10.1016/0361-3658(83)90034-6
  3. T.-I. Kim and K.-S. Kang, Trend on the development of commercial technology for feedstock recycling and high end products from PET wastes by the patent and paper analysis, J. Korean Inst. Resour. Recycl., 23, 68-79 (2014). https://doi.org/10.7844/kirr.2014.23.5.68
  4. M. Imran and D.-H. Kim, Sub- and supercritical glycolysis of polyethylene terephthalate (PET) into the monomer bis(2-hydroxyethyl) terephthalate (BHET), Polym. Degrad. Stab., 95, 1686-1693 (2010). https://doi.org/10.1016/j.polymdegradstab.2010.05.026
  5. M. Imran, D. H. Kim, W. A. Al-Masry, A. Mahmood, A. Hassan, S. Haider, and S. M. Ramay, Manganese-, cobalt-, and zinc-based mixed-oxide spinels as novel catalysts for the chemical recycling of poly (ethylene terephthalate) via glycolysis, Polym. Degrad. Stab., 98, 904-915 (2013). https://doi.org/10.1016/j.polymdegradstab.2013.01.007
  6. S.-S., Kim and S.-H. Kim, Pyrolysis kinetics of waste automobile lubricating oil, Fuel, 79, 1943-1949 (2000). https://doi.org/10.1016/S0016-2361(00)00028-4
  7. S.-S. Kim and F.-A. Agblevor, Pyrolysis characteristics and kinetics of chicken litter, Waste Manag., 27, 135-140 (2007). https://doi.org/10.1016/j.wasman.2006.01.012
  8. S.-S. Kim, J. Kim, Y. H. Park, and Y. W. Park, Pyrolysis kinetics and decomposition characteristics of pine trees, Bioresour. Technol., 101, 9797-9802 (2010). https://doi.org/10.1016/j.biortech.2010.07.094
  9. J.-L.-G. Fierro and J.-C. Conesa, Migration of molybdenum into intracrystalline cavities in molybdate-impregnated NaY zeolite, J. Catal., 108, 334-345 (1987). https://doi.org/10.1016/0021-9517(87)90182-5
  10. P. Leyrit and T. Cseri, Aromatic reduction properties of molybdenum sulfide clusters in HY zeolite, Catal. Today, 65, 249-256 (2001). https://doi.org/10.1016/S0920-5861(00)00594-0
  11. S.-S. Kim, H. V. Ly, G.-H. Choi, and J. Kim, H. C. Woo, Pyrolysis characteristics and kinetics of the alga Saccharina japonica, Bioresour. Technol., 123, 445-451 (2012). https://doi.org/10.1016/j.biortech.2012.07.097
  12. J. M. Smith, H. C. Van Ness, and M. M. Abbott, Introduction to Chemical Engineering Thermodynamics, 7nd ed, 19-49, McGraw-Hill Education, NY, USA (2005).
  13. M. Imran and K. G. Lee, Metal-oxide-doped silica nanoparticles for the catalytic glycolysis of polyethylene terephthalate, J. Nanosci. Nanotechnol., 11, 824-828 (2011). https://doi.org/10.1166/jnn.2011.3201
  14. S. S. Zumdahl, Chemistry, 7ed, 110-119, Brooks/Cole Pub Co, USA (2006).
  15. C.-H. Zhang and Y.-W. Li, Study of an iron-manganese Fischer-Tropsch synthesis catalyst promoted with copper, J. Catal., 237, 405-415 (2006). https://doi.org/10.1016/j.jcat.2005.11.004