摘要
研究了气体脱硫对活性碳纤维(ACF)和粒状活性炭(GAC)表面结构影响的规律.。在不同的含SO2体系下分别对ACF和GAC进行了脱硫实验,利用扫描电子显微(SEM)分析、比表面及孔结构参数测定、X-射线光电子能谱(XPS)分析等研究了活性炭脱硫前后表面结构的变化。实验结果表明:脱硫前后活性炭表面形貌变化比较大,而活性碳纤维的表面形貌没有明显的变化;含水状态下的混合含硫气体的脱硫效果明显提高,增加活性炭表面“COOH(R)”的含量有利于提高脱硫效率;不同条件下脱硫ACF表面官能团变化量大于GAC。
The desulfuration experiments for activated carbon fibre （ACF） and granular activated carbon （GAC） were performed in three systems including SO2 ＋ 02 ＋ N2 （ dry state）, SO2 ＋ O2 ＋ N2 ＋ H2O （ gas state） and SO2 ＋ O2 ＋N2 ＋ H2O（liquid state）, to investigate the surface structural change caused by desulfuratlon. Using SEM, BET, XPS, the morphology of fiber surface, the specific surface of fiber and the amount of the acidic functional groups on the activated carbon surface were determined respectively. The results showed that desulfurating in SO2 ＋O2 ＋ N2 ＋ H2O（liquid state）, the best desulfuration effect is obtained and the amount of H2O in SO2 ＋ O2 ＋ N2 favour improving the effect of desulfuration. The increase of the amount of COOH（R） groups on the activated carbon improves the effect of desulfuration. The amount of functional groups on the ACF during desulfuration is larger than GAC.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2007年第1期98-103,共6页
Journal of Sichuan University (Engineering Science Edition)
基金
国家烟气脱硫工程技术研究中心创新基金资助项目(2001DC105003-02)
关键词
活性碳纤维
活性炭
脱硫
activated carbon fibre
granular activated carbon
desulfuration
