Structural Characterization and Property Study on the Activated Alumina-activated Carbon Composite Material

• 作者: CHEN Yan-Qing WU Ren-Ping YE Xian-Feng
• 来源期刊: 结构化学
• 学科: 工学
• 关键词: 活性氧化铝 炭复合材料 结构表征 平均孔径 性能 饱和吸附容量 热处理条件 三氯化铝
• 年，卷（期）: 2012,（3）
• 页码范围: 315-320
• 页数: 6页
• 分类号: TQ424.1|TU991.266
• 语种: 英文

摘要

AlCl3,NH3·H2O,HNO3 and activated carbon were used as raw materials to prepare one new type of activated alumina-activated carbon composite material.The influence of heat treatment conditions on the structure and property of this material was discussed;The microstructures of the composite material were characterized by XRD,SEM,BET techniques;and its formaldehyde adsorption characteristic was also tested.The results showed that the optimal heat treatment temperature of the activated alumina-activated carbon composite material was 450 ℃,iodine adsorption value was 441.40 mg/g,compressive strength was 44 N,specific surface area was 360.07 m2/g,average pore size was 2.91 nm,and pore volume was 0.26 m3/g.According to the BET pore size distribution diagram,the composite material has dual-pore size distribution structure,the micro-pore distributes in the range of 0.6-1.7 nm,and the meso-pore in the range of 3.0-8.0 nm.The formaldehyde adsorption effect of the activated alumina-activated carbon composite material was excellent,much better than that of the pure activated carbon or activated alumina,and its saturated adsorption capacity was 284.19 mg/g.