摘要
为了对生物质毛竹的热化学转化特性进行优化,采用稀酸预处理技术对毛竹进行热降解前期的预处理.通过TG热分析技术和Coats-Redfern法对毛竹稀酸预处理前后的热降解特性和热解反应动力学模型进行分析,并运用SEM和XRD技术对毛竹的化学微结构进行表征.研究结果表明:经稀酸预处理后,毛竹的形貌特征和纤维素结晶度发生了变化,热化学反应活性大大地提高,热降解反应更加地完全.此外,稀酸的加入使毛竹热解反应的活化能明显增大,且频率因子显著升高.
To optimize the pyrolysis characteristics of biomass in the proceeding of thermo-chemical conversion,moao bamboo was subj ect to the hydrothermal pretreatment with the dilute hydrochloric acid.The pyrolysis behaviors and kinetic model were expressed by TG and Coats-Redfern methods for moso bamboo with acid pretreatment,and its microstructural characteristics was analyzed by SEM and XRD.The results showed that after dilute acid pre-treatment moso bamboo took place microstructural revolution,and cellulose crystallinity and thermal chemical reactivity were greatly improved.Moreover,the pyrolysis reaction of moso bamboo with pretreatment carried through completely,and the activation energy for bamboo pyrolysis reaction and frequency factor increased greatly along with the dilute acid was add-ed.
出处
《陕西科技大学学报（自然科学版）》
2016年第3期28-31,36,共5页
Journal of Shaanxi University of Science & Technology
基金
教育部博士学科点科研基金项目(20136125120003)
陕西省教育厅重点实验室科研计划项目(14JS011)
华南理工大学制浆造纸工程国家重点实验室开放基金项目(201332)
陕西科技大学博士科研启动基金项目(BJ11-24)
关键词
生物质
毛竹
预处理
微结构
热解动力学
biomass
bamboo
pretreatment
microstructure
pyrolysis dynamics
