欢迎访问《林产化学与工业》,

林产化学与工业 ›› 2019, Vol. 39 ›› Issue (3): 94-100.doi: 10.3969/j.issn.0253-2417.2019.03.013

• 研究报告 • 上一篇    下一篇

生物质原料的Ni催化石墨化研究

陈超(),王傲,孙康,卢辛成,许伟,蒋剑春*()   

  1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业和草原局 林产化学工程重点实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2018-11-20 出版日期:2019-06-28 发布日期:2019-06-26
  • 通讯作者: 蒋剑春 E-mail:cc1985_1019@126.com;bio-energy@163.com
  • 作者简介:陈超(1985-),男,湖南道县人,助理研究员,硕士,主要从事炭材料研究与应用; E-mail:cc1985_1019@126.com
  • 基金资助:
    林业科技成果推广计划项目(2016[15]号)

Graphitization of Biomass Catalyzed by Ni

Chao CHEN(),Ao WANG,Kang SUN,Xincheng LU,Wei XU,Jianchun JIANG*()   

  1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Materials, Jiangsu Province, Nanjing 210042, China
  • Received:2018-11-20 Online:2019-06-28 Published:2019-06-26
  • Contact: Jianchun JIANG E-mail:cc1985_1019@126.com;bio-energy@163.com
  • Supported by:
    林业科技成果推广计划项目(2016[15]号)

摘要:

分别以纤维素、木质素、杉木屑与核桃壳为原料,经过炭化后在Ni的催化作用下于1 400℃下进行了石墨化反应,并以X射线衍射(XRD)、Raman光谱和高分辨率透射电镜(HRTEM)分析了产物的石墨化程度。研究结果表明:纤维素在生物质的石墨化过程中起主要作用,在相同处理条件下,由纤维素得到的产物石墨化程度最高,由木质素得到的产物石墨化程度最低,杉木屑和核桃壳2种生物质原料得到的产物石墨化程度介于纤维素和木质素之间,不同原料石墨化程度的显著差异可能是由于原料结构的差异造成的。同时电导率测试结果表明:20MPa条件下,由纤维素得到的产物的电导率为54 S/cm,而由木质素得到的产物仅为31 S/cm,与石墨化程度的高低相对应。纤维素/木质素混合物的石墨化程度介于纤维素和木质素之间,两者不同质量比对混合物的石墨化程度影响不大。

关键词: 催化石墨化, 纤维素, 木质素, 生物质

Abstract:

Cellulose, lignin, fir sawdust and walnut shell were used as the start materials. Graphitization procedure after carbonization was carried out at 1 400℃ with the assistant of Ni. X-ray diffraction(XRD), Raman spectra and high resolution transparent electron microscopy(HRTEM) were used to evaluate the results of graphitization. The results showed that cellulose played a important role during the graphitization of biomass. Under the same treat progress, cellulose based product had the highest graphitic degree while lignin had the lowest graphitic degree, and both fir sawdust and walnut shell had the graphitic degree between those of the cellulose and lignin. The obvious difference of graphitic degree might be caused by the difference of the structures of different materials. The conductivity of cellulose based product was measured to be 54 S/cm while that of lignin based product was 31 S/cm, corresponding to the graphitic degree. The graphitic degree of the cellulose/lignin mixture based product was between those of the cellulose and lignin, and the mass ratio had little effect on the graphitic degree.

Key words: catalytic graphitization, cellulose, lignin, biomass

中图分类号: