木材炭化机理的FT-IR光谱分析研究  

FT-IR SPECTROSCOPIC ANALYSIS ON WOOD CARBONIZATION MECHANISM

作　　者：江茂生[1] 黄彪[2] 陈学榕[2] 唐兴平[2] 

机构地区：[1]福建农林大学生命科学学院,福建福州350002 [2]福建农林大学材料工程学院,福建福州350002

出　　处：《林产化学与工业》2005年第2期16-20,共5页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(30371140);福建省自然科学基金资助项目(E0310024)

摘　　要：结合炭化物的性质,采用傅立叶变换红外光谱,对木材炭化过程中碳网构造、表面官能团变化情况进行分析,揭示了其演变规律.结果表明:FT-IR光谱中1600cm-1附近芳环振动吸收强度的变化和波数的位移、3100～3200cm-1间v(Ar-H)及900～650 cm-1间v(Ar-H)的吸收强度的变化,与炭化过程中碳网构造的变化是相对应的.随炭化温度升高,炭化物聚合度升高,表面官能团也发生了明显变化.600～700℃间,炭化物中发生了大量-OH的脱水反应,碳网构造开始迅速发达.700℃之后,碳网的平面有序化并进一步生长.慢速升温有利于形成结构更规整的平面碳网,炭化物的表面官能团更少.By FT-IR spectral study, an attempt has been made to investigate the variations of carbon net construction and main functional groups on the surface of carbonized material of Chinese fir wood in the process of carbonization. The results indicated that the variations of absorption intensity of three characteristic bands, 1600, 3100-3200 and 900-650 cm -1 , and the shift of absorption peak of 1600 cm -1 can reflect the variations of aromatization degree and carbon net construction of the charcoal. With temperature rising, the degree of carbon polymerization is increasing, and the main functional groups on the charcoal surface are changed obviously. From 600-700 ℃, dehydration of the hydroxyls in carbonized material takes place abundantly, and the carbon net construction is developed highly. Furthermore, slow carbonization is beneficial to form better ordered carbon-net construction with less functional groups on the charcoal surface.

关 键 词：木材 炭化 FT-IR光谱 

分 类 号：TQ351.2[化学工程]