Effect of the pre-reforming by Fe/bio-char catalyst on a two-stage catalytic steam reforming of bio-oil

Qicong Liu, Zhe Xiong, Syed Shatir Asghrar Syed Hassan, Zengtong Deng, Xingyu Zhao, Sheng Su, Jun Xiang, Yi Wang, Song Hu

Research output: Contribution to journalArticle

Abstract

Ni-based catalyst is prone to the deactivation by coke deposition during the catalytic steam reforming of bio-oil. In order to optimize catalytic activity of the Ni-based catalyst, a two-stage catalytic reforming scheme was proposed whereby a low-temperature (350–600 °C) pre-reforming process with a less expensive catalyst was introduced prior to the Ni-based catalyst. To study this scheme, the reforming experiments with different combinations of Fe/bio-char (in the first stage) and Ni-Ca/γ-Al2O3 (in the second stage) were conducted. In addition to the quantification of product yields, the tar and gas were characterized with an ultraviolet (UV) fluorescence spectroscopy, a gas chromatography/mass spectrometer (GC/MS) and a gas chromatography (GC). The results indicate that significant proportions of naphthalenes and polycyclic aromatics in the intermediate volatiles turned into furans, phenols and non-aromatics, which are easier to be reformed on Ni-based catalysts, via the Fe/bio-char pre-reforming, resulting in the increase of the final H2 and CO yields of the overall process. At high pre-reforming temperatures (550–600 °C), the coke formation on Ni-based catalyst was significantly inhibited due to the Fe/bio-char pre-reforming. In addition, the results indicate that the spent Ni-based catalyst had more free NiO and NiAl2O4 spinel than the fresh one, suggesting that the increase in the catalytic activity of Ni-based catalyst during the reforming process was promoted by Fe/bio-char pre-reforming.

LanguageEnglish
Pages282-289
Number of pages8
JournalFuel
Volume239
DOIs
Publication statusPublished - Mar 1 2019

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Catalytic reforming
Steam reforming
Reforming reactions
Oils
Catalysts
Coke
Gas chromatography
Catalyst activity
Naphthalenes
Furans
Tars
Phenols
Tar
Fluorescence spectroscopy
Mass spectrometers
Carbon Monoxide
Naphthalene
Ultraviolet spectroscopy
Gases
Temperature

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Effect of the pre-reforming by Fe/bio-char catalyst on a two-stage catalytic steam reforming of bio-oil. / Liu, Qicong; Xiong, Zhe; Hassan, Syed Shatir Asghrar Syed; Deng, Zengtong; Zhao, Xingyu; Su, Sheng; Xiang, Jun; Wang, Yi; Hu, Song.

In: Fuel, Vol. 239, 01.03.2019, p. 282-289.

Research output: Contribution to journalArticle

Liu, Qicong ; Xiong, Zhe ; Hassan, Syed Shatir Asghrar Syed ; Deng, Zengtong ; Zhao, Xingyu ; Su, Sheng ; Xiang, Jun ; Wang, Yi ; Hu, Song. / Effect of the pre-reforming by Fe/bio-char catalyst on a two-stage catalytic steam reforming of bio-oil. In: Fuel. 2019 ; Vol. 239. pp. 282-289.
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