Catalytic fast pyrolysis of torrefied corn cob to aromatic hydrocarbons over Ni-modified hierarchical ZSM-5 catalyst

Leilei Dai, Yunpu Wang, Yuhuan Liu, R. R Ruan, Dengle Duan, Yunfeng Zhao, Zhenting Yu, Lin Jiang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Catalytic fast pyrolysis (CFP) of torrefied corn cob using Ni-modified hierarchical ZSM-5 catalyst was conducted in this study. The prepared catalysts were characterized by N2 adsorption and desorption (N2-BET), X-ray diffraction (XRD), and temperature-programmed desorption of NH3 (NH3-TPD). NaOH solution treatment resulted in the lower peak intensities of hierarchical ZSM-5 catalyst in the XRD patterns while Ni modification improved the catalyst framework. In addition, NaOH solution treatment created some mesopores or macropores, but the incorporation of Ni reduced BET surface area and volume of micropores. Though the addition of Ni lowered the acidity of catalyst, Ni-modified hierarchical ZSM-5 catalyst led to higher yields and of aromatic hydrocarbons. What is more, hierarchical ZSM-5 catalysts significantly improved the selectivities of mono-aromatics. Kinetic analysis shows that CFP of torrefied corn cob was second-order reaction and the addition of Ni can obtain a lower activation energy compared with hierarchical ZSM-5 catalyst.

Original languageEnglish (US)
Pages (from-to)407-414
Number of pages8
JournalBioresource Technology
Volume272
DOIs
StatePublished - Jan 1 2019

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Aromatic Hydrocarbons
Aromatic hydrocarbons
aromatic hydrocarbon
pyrolysis
Pyrolysis
catalyst
maize
Catalysts
Temperature programmed desorption
desorption
X-ray diffraction
X ray diffraction
Catalyst selectivity
macropore
Acidity
activation energy
Diffraction patterns
acidity
Desorption
Activation energy

Keywords

  • Aromatic hydrocarbons
  • CFP
  • Kinetic analysis
  • ZSM-5

PubMed: MeSH publication types

  • Journal Article

Cite this

Catalytic fast pyrolysis of torrefied corn cob to aromatic hydrocarbons over Ni-modified hierarchical ZSM-5 catalyst. / Dai, Leilei; Wang, Yunpu; Liu, Yuhuan; Ruan, R. R; Duan, Dengle; Zhao, Yunfeng; Yu, Zhenting; Jiang, Lin.

In: Bioresource Technology, Vol. 272, 01.01.2019, p. 407-414.

Research output: Contribution to journalArticle

Dai, Leilei ; Wang, Yunpu ; Liu, Yuhuan ; Ruan, R. R ; Duan, Dengle ; Zhao, Yunfeng ; Yu, Zhenting ; Jiang, Lin. / Catalytic fast pyrolysis of torrefied corn cob to aromatic hydrocarbons over Ni-modified hierarchical ZSM-5 catalyst. In: Bioresource Technology. 2019 ; Vol. 272. pp. 407-414.
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AB - Catalytic fast pyrolysis (CFP) of torrefied corn cob using Ni-modified hierarchical ZSM-5 catalyst was conducted in this study. The prepared catalysts were characterized by N2 adsorption and desorption (N2-BET), X-ray diffraction (XRD), and temperature-programmed desorption of NH3 (NH3-TPD). NaOH solution treatment resulted in the lower peak intensities of hierarchical ZSM-5 catalyst in the XRD patterns while Ni modification improved the catalyst framework. In addition, NaOH solution treatment created some mesopores or macropores, but the incorporation of Ni reduced BET surface area and volume of micropores. Though the addition of Ni lowered the acidity of catalyst, Ni-modified hierarchical ZSM-5 catalyst led to higher yields and of aromatic hydrocarbons. What is more, hierarchical ZSM-5 catalysts significantly improved the selectivities of mono-aromatics. Kinetic analysis shows that CFP of torrefied corn cob was second-order reaction and the addition of Ni can obtain a lower activation energy compared with hierarchical ZSM-5 catalyst.

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