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

Fingerprint

Aluminosilicates
aluminosilicate
Fruits
pyrolysis
Pyrolysis
fruit
catalyst
Polypropylenes
Catalysts
Aromatic Hydrocarbons
aromatic hydrocarbon
Aromatic hydrocarbons
degradation
in situ
thermal decomposition
aluminum oxide
Aluminum Oxide
acidity
Acidity
silica

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