Fabrication of Ni-alumina Composite Membrane via Powder and Bulk Impregnation Method for Hydrogen Separation

作     者：Supawan Vichaphund Duangduen Atong 

作者机构：National Metal and Materials Technology Center 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2010年第26卷第7期

页      面：589-596页

核心收录：

学科分类：07[理学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the National Metal and MaterialsTechnology Center Thailand for financial support(MT-B-51-END-07-057-I) 

主　　题：Composite membrane Hydrogen separation Nickel Alumina 

摘      要：This work reports two preparation methods of Ni-Al2O3 composite to be used as a hydrogen separation membrane. The first method was powder impregnation while the second method was soaking-drying-firing or bulk impregnation. In the first method, the 10 wt pct Nickel （11） nitrate hexahydrate solution was mixed with Al2O3 powder. The mixed powders were dried at 100℃ and uniaxially pressed into a disk shape at 7 MPa. The densification of composite membranes was accomplished by pressureless sintered at 900-1300℃. For the second preparation method, the Al2O3 disk support was prepared firstly by uniaxially pressing Al2O3 powder at 7 MPa and then sintered at 1000-1200℃ for 2 h. After that, the Al2O3 support was soaked into 10 wt pct Ni solution, dried at 100℃ and calcined at 900℃ for 2 h. The soaking-drying-firing sequence was repeated ten times to finally obtain the Ni-Al2O3 membranes. from these two methods were reduced at 910℃ for 2 h After preparation process, the membranes fabricated in hydrogen atmosphere. The effect of the preparation method on properties of membranes in terms of density, porosity, phase and microstructure are discussed