Pyrolysis of chitin biomass: TG-MS analysis and solid char residue characterization

Yan Qiao; Shuai Chen; Ying Liu; Haizhen Sun; Shiyu Jia; Junyan Shi; Christian Marcus Pedersen; Yingxiong Wang; Xianglin Hou

doi:10.1016/j.carbpol.2015.07.005

Pyrolysis of chitin biomass: TG-MS analysis and solid char residue characterization

Carbohydr Polym. 2015 Nov 20:133:163-70. doi: 10.1016/j.carbpol.2015.07.005. Epub 2015 Jul 13.

Authors

Yan Qiao¹, Shuai Chen¹, Ying Liu¹, Haizhen Sun¹, Shiyu Jia², Junyan Shi², Christian Marcus Pedersen³, Yingxiong Wang⁴, Xianglin Hou⁵

Affiliations

¹ Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, People's Republic of China; State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China.
² The Biorefinery Research and Engineering Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China.
³ Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
⁴ The Biorefinery Research and Engineering Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China; State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China. Electronic address: wangyx@sxicc.ac.cn.
⁵ The Biorefinery Research and Engineering Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China. Electronic address: houxl@sxicc.ac.cn.

PMID: 26344268
DOI: 10.1016/j.carbpol.2015.07.005

Abstract

The thermal degradation of chitin biomass with various molecular structures was investigated by thermogravimetric analysis (TG), and the gaseous products were analyzed by connected mass spectroscopy (MS). The chemical structure and morphology of char residues collected at 750°C using the model substrates GlcNH2 and GlcNAc, were characterized systematically. The experimental results disclosed that one main mass loss stage was observed for each substrate. Chitosan samples with high molecular weight shown the more thermal stability, and chitin showed the highest thermal stability. Additionally, it was found that catalysts play a significant role during the pyrolysis. The gaseous evolution components, including NH3, H2O, CO, and CO2 were observed by on line MS. The experimental results disclosed that the obtained carbonaceous materials had lost the original hydrocarbon structure totally, and transformed into an aromatic structure with high carbon and nitrogen content, which was identified by XPS and solid state NMR.

Keywords: Chitin; Chitosan; Pyrolysis; Solid-state NMR; TG–MS.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomass*
Chitin / chemistry*
Mass Spectrometry
Temperature
Thermogravimetry

Substances

Chitin