The pyrolysis characteristics of moso bamboo

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• 作者：Zehui Jiang^a ; ^{Jiangzehui@icbr.ac.cn} ; Zhijia Liu^a ; Benhua Fei^a ; Zhiyong Cai^b ; Yan Yu^a ; Xing&#8217 ; e Liu^a
• 关键词：Pyrolysis ; Moso bamboo ; TG ; TG&ndash ; FTIR ; XRD
• 刊名：Journal of Analytical and Applied Pyrolysis
• 出版年：2012
• 期刊代码：46_01652370
• 类别：ch
• 出版时间：March, 2012
• 卷：94
• 期：Complete
• 页码：48-52
• 文件大小：440 K

摘要

In the research, thermogravimetry (TG), a combination of thermogravimetry and Fourier transform infrared spectrometer (TG-FTIR) and X-ray diffraction (XRD) were used to investigate pyrolysis characteristics of moso bamboo (Phyllostachys pubescens). The Flynn-Wall-Ozawa and Coats-Redfern (modified) methods were used to determine the apparent activation energy (E_a). The TG curve indicated that the pyrolysis process of moso bamboo included three steps and the main pyrolysis occurred in the second steps with temperature range from 450 K to 650 K and over 68.69%mass was degraded. TG-FTIR analysis showed that the main pyrolysis products included absorbed water (H₂O), methane gas (CH₄), carbon dioxide (CO₂), acids and aldehydes, ammonia gas (NH₃), etc. XRD analysis expressed that the index and width crystallinity of moso bamboo gradually increased from 273 K to 538 K and cellulose gradually degraded from amorphous region to crystalline region. The E_a values of moso bamboo increased with conversion rate increase from 10 to 70. The E_a values were, respectively 153.37-198.55 kJ/mol and 152.14-197.87 kJ/mol based on Flynn-Wall-Ozawa and Coats-Redfern (modified) methods. The information was very helpful and significant to design manufacturing process of bio-energy, made from moso bamboo, using gasification or pyrolysis methods.