Open AccessEffect of Torrefaction Pretreatment on Chemical Structure and Pyrolysis Behaviors of Cellulose
Author(s) -
Anqing Zheng,
Luwei Li,
Zengli Zhao,
Yuanyu Tian,
Haibin Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/621/1/012014
Subject(s) - torrefaction , cellulose , pyrolysis , thermogravimetric analysis , fourier transform infrared spectroscopy , materials science , carbonization , reactivity (psychology) , chemical engineering , elemental analysis , chemistry , organic chemistry , adsorption , medicine , alternative medicine , pathology , engineering
In order to obtain the effect of torrefaction pretreatment on chemical structure and pyrolysis reactivity of cellulose, torrefaction of cellulose was conducted in a fixed bed reactor at varying torrefaction temperature and residence time. The chemical composition and structural alterations of torrefied cellulose were characterized by elemental analyzer and Fourier-transform infrared spectroscopy (FTIR). The investigation on the pyrolysis behaviors of raw and torrefied cellulose were carried out by using a thermogravimetric analyzer (TGA). The results showed that torrefaction of cellulose mainly proceeded a series of deoxygenation, polycondensation and carbonization reactions. The severe carbonization of cellulose occurred when the torrefaction temperature and residence time were larger than 300°C and 40 min, resulting in the drastic decrease in the pyrolysis reactivity of cellulose. Hence, the optimal torrefaction temperature should not exceed 280°C.