纳米磁性膨润土Fenton催化剂的制备及其表征  

Preparation and characterization of magnetic nanobentonite as Fenton catalyst

作　　者：鲁云洲[1,2] 王光华[1,2] 李文兵[1,2] 董晴雯[1,2] 陈坤[1,2] 

机构地区：[1]武汉科技大学化学工程与技术学院,武汉430081 [2]湖北省煤转化与新型炭材料重点实验室,武汉430081

出　　处：《化工新型材料》2014年第4期148-150,共3页New Chemical Materials

基　　金：高等学校博士学科点专项科研基金(20114219110002);煤转化与新型炭材料湖北重点实验室开放基金(WKDM201107);武汉科技大学绿色节能与减排科技研究中心开放基金(A1201;B1209)

摘　　要：采用离子交换法制备出A1柱撑膨润土，再利用原位合成法以铝柱撑膨润土负载纳米Fe3O4制备出2种负载比例的纳米磁性膨润土。结合傅里叶红外光谱、X射线粉末衍射、扫描电镜和比表面孔隙分析等手段对催化剂的键价结构、晶相、比表面积和粒度进行表征。负载的纳米FesO4粒径约为20-30nm，均匀分散到膨润土表面，未发生明显的团聚。负载比例分别为30％和50％的磁性膨润土比表面积分别为128．16m2·g^-1和103．83m2·g^-1，是1种性能优异的新型磁性Fenton催化剂。Al-pillared bentonite was synthesized via ion exchange method. The magnetic nanobentonite with two dif- ferent Fe3O4 contents were prepared by in-situ synthesis method using Al-pillared bentonite as support. The chemical struc- ture,microstructure, surface area and average particle size of the obtained material were characterized by FTIR spectra, X- ray diffraction, specific surface area and scanning electron microscopy. The spherical Fe3 04 nanoparticles dispersed on the surface of clay with no obvious aggregation. The specific surface areas of nanobetotonite with 30 % and 50 % Fe3O4 content were 128. 16m2 · g^- 1 and 103.83m2 · g^- 1, respectively,which can be used as Fenton catalyst with good performance.

关 键 词：纳米FE3O4 膨润土 Fenton催化剂 磁性 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]