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

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

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.

Original languageEnglish
Pages (from-to)330-338
Number of pages9
JournalChemical Engineering Journal
Volume366
DOIs
StatePublished - 15 Jun 2019

Keywords

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

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