采用化学(KOH)方法对两种具有代表性的生物质原料(花梨木和稻壳)的快速热裂解固体产物一热解炭进行了活化,并采用氮吸附、x射线衍射(XRD)、傅里叶红外光谱分析(FTIR)和扫描电镜(SEM)技术测试了热解炭的结构特性、表面特性以及物理化学性质.结果表明,这两种热解炭经过活化后可以获得许多优良的性质,固定碳含量增加,灰分含量减少.同时,活化后BET比表面积迅速增大,超过1100m2/g,而且热解炭的石墨化程度都有所加深.热解炭通过活化过程可以实现其高品质利用,有利于生物质热裂解技术的工业化发展.
The pyrolytic chars from fast pyrolysis of rosewood and rice husk have been activated with KOH solvent. The texture and structure, surface properties and physico-chemical properties of the pyrolytic chars have been characterized by N2 physisorption, X-ray diffraction (XRD), Fourier transform infrared spectroscopy ( FTIR ) and Scanning electron microscope ( SEM ). Compared with the original pyrolytic chars, the activated chars had higher fixed carbon content and lower ash content. The BET surface area increased beyond l 100m2/g after activation. Moreover, the activated chars had higher graphitization degree. high grade utilization of pyrolytic biomass fast pyrolysis technology.