Investigate the interactions between biomass components during pyrolysis using in-situ DRIFTS and TGA

Jianqiao Wang, Boxiong Shen*, Dongrui Kang, Peng Yuan, Chunfei Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Biomass pyrolysis is a promising thermal chemical processing technology to produce renewable and sustainable energy materials. However, the interaction between biomass components (cellulose, hemicellulose and lignin) during pyrolysis process needed further investigation. In this work, an in-situ Reflectance Infrared Fourier Transform Spectroscopy (in-situ DRIFTS) reactor was introduced to investigate the interactions assisted with Thermogravimetric Analysis (TGA). The experiments demonstrate that there exist complicated interactions between the main components of biomass during pyrolysis. The results from TGA/DTG indicate that the interactions between cellulose and xylan introduce higher pyrolysis temperature, while the interactions between cellulose and lignin, xylan and lignin, resulte less weight loss. The increase of compression pressure for the mixture of main components changes the weight loss of the mixture. The results from in-situ DRIFTS show that the decomposition and aromatization of xylan are promoted when the cellulose is added. Cellulose will also hinder the accumulation of the benzene rings of the lignin. The in-situ DRIFTS experiment results also suggest that the contact pressure between the components conduct more residue solid, mainly because the dehydration reaction of the mixture samples was inhibited and the charring process was promoted, especially the reaction between cellulose and lignin.

Original languageEnglish
Pages (from-to)767-776
JournalChemical Engineering Science
Volume195
Early online date17 Oct 2018
DOIs
Publication statusPublished - 23 Feb 2019

Keywords

  • Biomass pyrolysis
  • Cellulose
  • In-situ DRIFTS
  • Lignin
  • Xylan

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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