油页岩灰渣制备纳米γ-Al_2O_3的方法研究  

Method for Extracting Nano γ-Al_2O_3 by Oil Shale Ash

作　　者：季桂娟[1] 郝磊[1,2] 李晓军 高桂梅[1] 甘树才[1] 

机构地区：[1]吉林大学化学学院,吉林长春130026 [2]大庆油田责任有限公司,吉林大庆163453

出　　处：《中国非金属矿工业导刊》2011年第3期29-30,53,共3页China Non-Metallic Minerals industry

基　　金：国家重大科技专项课题资助(2008ZX05018-005)

摘　　要：本文研究了以油页岩灰渣为原料提取纳米γ-Al2O3的方法,该方法包括浸取和烧结两个步骤。以表面活性剂进行表面改性,辅以超声震荡,最后以正丁醇为置换剂进行共沸蒸馏去除前躯体表面的羟基以及吸附的水分子。用X-射线衍射、透射扫描电镜、比表面积(BET)检测手段对制备出的氧化铝纳米粉末进行了分析。试验结果表明,所得的纳米氧化铝分散均匀,粒径为20～40nm。A combined process was proposed for the utilization of waste oil shale ash（OSA） in the production of γ-Al2O3 nanoparticles.The process consisted of two stages,leaching and sintering.The ultrasonic technique followed by a heterogeneous azeotropic distillation process in the presence of polyethylene glycol（PEG） was carried to ensure complete elimination of the residual water in the precipitate.The structural and morphological properties of the calcined nanocrystalline powders were characterized by X-ray diffractometer（XRD）,transmission electron microscope（TEM）,Brunauer-Emmett-Teller nitrogen-gas adsorption method（BET）.The results indicated that the γ-Al2O3 powder with a uniform particle was well dispersed and the particle size was 20~40nm.

关 键 词：油页岩灰渣 共沸蒸馏 纳米γ-Al2O3 

分 类 号：X705[环境科学与工程—环境工程] TQ133.1[化学工程—无机化工]