摘要
本文以椰壳活性炭为原料,NaOH为活化剂通过负载氧化铁对其进行改性,石脑油作为吸附物进行吸附实验。实验结果表明:氧化铁负载量为4%时脱硫后硫含量最低,脱硫率为95.33%。经改性后的活性灰孔径明显减小,氧化铁晶体比较均匀地分散在活性炭表面、嵌入活性炭孔中,而提高了改性活性炭的比表面积,提升了吸附能力。同氏脱硫后改性活性炭的孔道被堵塞使其表面的活性组分被覆盖,阻碍了石脑油中硫化物与改性活性炭的活性中心接触,导致改性活性炭的活性大幅下降。
In this paper,coconut shell activated carbon was used as raw material,NaOH was used as activator,iron oxide was loaded on it,and naphtha was used as adsorbent for adsorption experiment.The results show that the sulfur content is the lowest when the iron oxide loading is 4%,and the desulfurization rate is 95.33%.After modification,the pore size of the modified activated carbon was significantly reduced,and the iron oxide crystal was more evenly dispersed on the surface of the activated carbon and embedded in the activated carbon pore,which increased the specific surface area of the modified activated carbon and enhanced the adsorption capacity.After Tongshi desulfurization,the pore channels of the modified activated carbon were blocked,and the active components on the surface were covered,which hindered the contact between the sulfur compounds in naphtha and the active center of the modified activated carbon,resulting in a significant decrease in the activity of the modified activated carbon.
作者
刘静
金燚翥
LTUjing;JINYi-zhu(China Aviation Industry Group Jincheng Nanjing electromechanical Hydraulic Engineering Research Center,Nanjing 211106,China;Harbin electric carbon plant Harbin 150025,China)
出处
《炭素》
2020年第3期10-13,共4页
Carbon
关键词
氧化铁
活性炭
脱硫
iron oxide
activated carbon
desulfurization
