TiO_2溶胶浸渍对高温热处理后稻壳多孔织构的影响  

Effect of TiO_2 sol impregnation on porous structure of rice husk after high temperature treatment

作　　者：陈辉[1] 赵雷[1] 李淑静[1] 王玺堂[1] 王俊杰[1] 李远兵[1] 

机构地区：[1]武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地,湖北武汉430081

出　　处：《耐火材料》2013年第6期406-409,共4页Refractories

基　　金：湖北省自然科学基金重点项目(2010CDAO28);教育部新世纪优秀人才项目(NCET-10-0137);湖北省耐火材料与高温陶瓷重点实验室-省部共建重点实验室培育基地2010年度开放基金资助项目(G201005)

摘　　要：以稻壳为原料,经过低温预处理后将其浸渍在TiO2溶胶中,经干燥、高温处理后得到稻壳二氧化硅试样。利用XRD、SEM和EDS研究了经TiO2溶胶处理前后的稻壳组成及多孔织构。结果表明:经溶胶浸渍及高温处理后的稻壳试样中气孔壁及表面形成致密的TiO2纳米颗粒膜,增强了其骨架强度,经1 400℃处理后仍能保持本征的多孔织构。The rice husk silica specimens were prepared by pre-treating rice husk at low temperatures, im- pregnating in TiQ~ sol,drying,and hot treating. The compositions and porous textures of the modified and unmodified rice husk silica were investigated by XRD, SEM, and EDS. The results show that a TiO2 grain film is formed on the pore wall and surface of rice husk specimens after sol impregnation and hot treat- ment,which enhances its skeleton strength,and its original porous texture of rice husk silica is still main- tained at 400 ~C.

关 键 词：稻壳 多孔织构 TIO2溶胶 

分 类 号：TB34[一般工业技术—材料科学与工程]