酸碱改性活性炭物化性质变化研究

Change of Physico-chemical Proterties of Activated Carbons Modified With Acid-base

本文分别采用草酸、硝酸、氨水对活性炭进行改性处理,借助比表面积及孔隙分析仪、傅立叶红外光谱、扫描电子显微镜三种仪器,从活性炭的孔结构特性、表面官能团以及表面形貌三个方面对样品进行物化性质分析。与未改性活性炭对比,结果表明:草酸、硝酸、氨水改性都会对活性炭的孔径结构和形貌造成不同程度改变,其对活性炭表面含氧基团的影响作用各不相同。

In the paper,activated carbons were modified with oxalic acid,HNO3 and NH3.With the help of surface area measurement,Fourier transform infrared spectrometry and scanning electron microscope,samples＇ physico-chemical proterties were analyzed from the pore structure characteristics,surface functional groups and surface feature.The results show that： compared with untreated activated carbon,oxalic acid,HNO3 and NH3 will change the pore structure and look of activated carbons,but their effects of surface oxygen groups are different.