醇的种类对球形γ-Al2O3多孔结构的影响  

Effect of alcohol type on the porous structure of sphericalγ-AlO

作　　者：张田田 辛秀兰[1] 宋楠 蒋冰 徐宝财[1] ZHANG Tiantian;XIN Xiulan;SONG Nan;JIANG Bing;XU Baocai(School of Light Industry,Beijing Technology and Business University,Beijing 100048,China)

机构地区：[1]北京工商大学轻工科学技术学院,北京100048

出　　处：《精细化工》2020年第8期1587-1593,共7页Fine Chemicals

基　　金：国家科技计划项目申报中心重点研发计划(2017YFB0308701)。

摘　　要：以异丙醇铝为原料,稀硝酸为溶胶剂,采用溶胶-油氨柱法制备具有多孔结构的球形γ-Al2O3。探究不同碳链长度的醇对产物多孔结构的影响,利用XRD、FTIR、SEM、TG-DTG、比表面积及孔径分析仪对产物进行结构表征。结果表明,醇的种类对球形γ-Al2O3的多孔结构产生影响,其中碳链越长的醇,制备出的球形γ-Al2O3孔结构越丰富;加入正己醇所制备的球形γ-Al2O3比表面积较大,可达到270.9m^2/g。所制备的球形γ-Al2O3具有高球形度、丰富的孔结构,可进一步应用于催化、吸附等领域。Sphericalγ-Al2O3 with porous structure was prepared by sol-oil-ammonia drop method using aluminum isopropoxide as raw material,dilute nitric acid as solving agent.The effects of alcohols with different carbon chain lengths as pore-expanding agents on the porous structure of the product were investigated.The structure of the product was characterized by XRD,FTIR,SEM,TG-DTG,specific surface area and pore size analyzer.The results showed that the types of organic alcohols had an effect on the porous structure of sphericalγ-Al2O3.The longer the carbon chain alcohol was,the more abundant the sphericalγ-Al2O3 pore structure was.The specific surface area of sphericalγ-Al2O3 prepared by adding n-hexanol was larger,reaching 270.9 m^2/g.The sphericalγ-Al2O3 had high degree of sphericity and abundant pore structure,which can be further used in catalysis,adsorption and other fields.

关 键 词：球形γ-Al2O3 大孔-介孔结构 有机醇 溶胶-油氨柱 异丙醇铝 功能材料 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ424.27[化学工程]