海藻酸辅助制备氧化铝小球的活性炭扩孔研究.pdfVIP

第 49 卷 第 6 期 天津大学学报 (自然科学与工程技术版) Vol.49 No.6 2016 年 6 月 Journal of Tianjin University (Science and Technology) Jun. 2016 DOI:10.11784/tdxbz201409070 海藻酸辅助制备氧化铝小球的活性炭扩孔研究 王希涛，张业岭，王 康，范江洋，董安华 (天津大学化工学院，天津 300072) 摘 要 ：采用表面活性剂及乳液分散活性炭对海藻酸辅助制备的 γ-Al2O3 小球进行扩孔，制备了孔容及平均孔径均 较大的 γ-Al2O3 小球.用氮吸附-脱附、机械强度测定仪、XRD 、SEM、TG 等方法对样品进行表征，考察了分散剂类 型、用量以及助剂的添加对活性炭扩孔的 γ-Al2O3 小球孔结构及其他理化性质的影响. 结果表明：吐温-80、液体石 蜡、活性炭与锌粉添加量分别为 5%、5%、 10%和 0.1%时，γ-Al2O3 小球的平均孔径与强度分别为 12.6 nm 与 19.1 N/ 颗；活性炭及分散剂的添加均不会影响 γ-Al O 小球的晶相；助剂锌粉的添加可促使活性炭充分燃烧，减少灰分的 2 3 残留. 关键词 ：活性炭；球形氧化铝；表面活性剂；乳液；扩孔 中图分类号：TQ133.1 文献标志码 ：A 文章编号 ：0493-2137 (2016)06-0610-05 Pore-Enlargement of Spherical Alumina Prepared by Alginate Assisted Method with Pore-Expanding Agent of Dispersed Activated Carbon Wang Xitao ，Zhang Yeling ，Wang Kang ，Fan Jiangyang ，Dong Anhua (School of Chemical Engineering and Technology ，Tianjin University ，Tianjin 300072 ，China) Abstract ：Spherical γ-Al O with large pore volume and pore diameter was prepared using activated carbon dispersed in 2 3 surfactant and emulsion as pore-enlarging methods. The samples were characterized by N adsorption/desorption, tensile 2 tester, XRD, SEM and TG. The effects of dispersant types, content and additive on the pore structure and other physico- chemical properties of γ-Al O were investigated. The results indicate that spherical γ-Al O with pore diameter 1