摘要
以工业4#活性炭(AC4)为载体,制备KOH改性活性炭,对比研究了KOH、Na2CO3、KI改性活性炭在相同条件下吸附净化羰基硫(COS)的性能,为KOH>Na2CO3>KI;考察了反应条件对吸附净化COS气体的影响;并对空白活性炭、新鲜改性活性炭和吸附后改性活性炭作SEM-EDS表征分析。结果表明,质量分数为10%的KOH是最佳浸渍液,反应温度60℃、氧含量1.0%为改性活性炭的最佳反应条件。结合SEM-EDS表征分析表明:改性活性炭孔结构的变化和表面活性物质的生成使其对COS的吸附净化效果增强。
The modification of industrial activated carbon 4#（AC4）with impregnated KOH and the adsorption capacities of KOH,Na2CO3,KI toward carbonyl sulfide（COS）were studied and compared,leading to the result：KOHNa2CO3KI.The effects of reaction conditions were investigated.The fresh activated carbon and modified activated carbon before and after COS adsorption were characterized by SEM-EDS.The results showed that 10%（w%）of KOH was the best impregnation and the optimum condition was at 60 ℃ with 1.0% of oxygen content.Furthermore,SEM-EDS distribution indicated that the result of adsorption became obviously better by the change of pore structure of modified activated carbon and the formation of surface active materials.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2011年第2期425-431,437,共8页
Chemical Industry and Engineering Progress
基金
国家自然科学基金项目(50708044)
关键词
羰基硫
改性活性炭
吸附
carbonyl sulfide
modified activated carbon
adsorption
