Catalytic Effects of Super Acid SO₄^2-/γ-Al₂O₃ to PET Depolymerization under Microwave Irradiation

Abstract:

The effects of different temperatures on catalytic hydrolysis of polyethylene terephthalate(PET) by solid super acids SO₄^2- /γ-Al₂O₃ as a catalyst under microwave irradiation were studied, and in the meantime, the morphology analysis of the undepolymerized PET under the same temperature was investigated by SEM. The results indicate that the depolymerization rate of PET is seriously influenced by reaction time and temperature. The depolymerization mechanism is changed by the solid super acid SO₄^2- /γ-Al₂O₃, and the depolymerization rate is higher than that of with no catalyst in the whole process of reaction.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 280-283
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.280
• Online since: July 2012
• Authors: Hong Mei Yan, Yong Shuai Ma, Wei Lu Zhang, Dong Zhang
• Keywords: Catalysis, Depolymerization, Microwave, PET, Super Acid SO₄^2- /γ-Al₂O₃

References

[1] Z.L. Wang, J.M. Chen:Department of Environmental Science & Engineering, Fudan University, Master's thesis, Vol. 21 (2000), pp.116-119(In Chinese)

[2] Haifu Guo,et a1.: Chemical Engineering of Oil & Gas Vol. 31 (2002), pp.13-14(In Chinese)

[3] Chong jiang Cao, et a1.: Journal of Catalysis Vol. 24(2003), pp.447-451(In Chinese)

[4] Dongsun Mao, et a1.: Chemistry Bulletin Vol. 64(2001), p.278 (In Chinese)

[5] Mochiea J,eta1.: Carbon Vol. 29 (1991), p.561.

[6] K.X.Li, X.F. Song and D.Zhang: Journal of Applied Polymer Science Vol.109(2008), p.1298.

[7] X.F. Song S.Z. Zhang and D.Zhang: Journal of Applied Polymer Science Vol.117(2010), p.3155.

[8] X. Liu, Z. Zhu: Polyester Ind. Vol. 3 (1994), p.16(In Chinese).

[9] Y.S.Ma, Q.H. Tang, D.Zhang: Advanced Materials Research Vols.233-235(2011), p.1073.

[10] S.Z. Zhang, X.F. Song, D.Zhang, Y.G. Tian: Polymer J.43(2011), p.811. Conclusions