In-situ and ex-situ catalytic pyrolysis/co-pyrolysis of empty fruit bunches using mesostructured aluminosilicate catalysts

Hoda SHAFAGHAT, Hyung Won LEE, Yiu Fai TSANG, Daejun OH, Jungho JAE, Sang-Chul JUNG, Chang Hyun KO, Su Shiung LAM, Young-Kwon PARK

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Abstract

Mesostructured aluminosilicates of Al-MSU-F (commercial), Al-SBA-15 (home-made), and mesoMFI (a mesoporous aluminosilicate with MFI structure, home-made), with a silica-to-alumina ratio of 40, were used as catalyst for the in-situ catalytic pyrolysis (CP) of empty fruit bunches (EFB) at 600 °C. The highest selectivity to aromatic hydrocarbons in bio-oil was obtained over mesoMFI due to its higher acidity than Al-SBA-15 and Al-MSU-F. In addition, ex-situ CP of EFB using mesoMFI was compared with in-situ CP; the ex-situ configuration produced higher aromatic hydrocarbons than the in-situ configuration. Meanwhile, in-situ and ex-situ catalytic co-pyrolysis (CCP) of EFB (with a H/Ceff ratio less than 0.3) and polypropylene (PP) (with a high H/Ceff ratio about 2) were carried out using the mesoMFI at 600 °C to investigate the supplementary effect of PP on the deoxygenation of EFB-derived pyrolyzates for producing aromatic hydrocarbons. Ex-situ CCP of EFB/PP (with the mass ratios of 75/25, 50/50, and 25/75) resulted in a lower formation of aromatic hydrocarbons than the in-situ CCP. In addition, the thermal decomposition behavior of EFB, PP, and EFB/PP in non-catalytic and catalytic (mesoMFI) pyrolysis/co-pyrolysis was investigated using thermogravimetric analysis (TGA); use of catalyst reduced the temperature of PP thermal degradation, but did not change the maximum reactivity temperature of EFB degradation. Copyright © 2019 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)330-338
JournalChemical Engineering Journal
Volume366
Early online dateFeb 2019
DOIs
Publication statusPublished - Jun 2019

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Citation

Shafaghat, H., Lee, H. W., Tsang, Y. F., Oh, D., Jae, J., Jung, S.-C., . . . Park, Y.-K. (2019). In-situ and ex-situ catalytic pyrolysis/co-pyrolysis of empty fruit bunches using mesostructured aluminosilicate catalysts. Chemical Engineering Journal, 366, 330-338. doi: 10.1016/j.cej.2019.02.055

Keywords

  • In-situ/ex-situ catalytic pyrolysis
  • Co-pyrolysis
  • Biomass
  • Bio-oil
  • Aromatic hydrocarbons