Nanocasting synthesis of ordered mesoporous alumina with crystalline walls: influence of aluminium precursors and filling times
The influence of aluminum precursors and filling times on the nanocasting synthesis of ordered crystalline mesoporous alumina molecular sieve with CMK-3 as an exotemplate was investigated. With the aid of nitrogen physisorption, XRD and TEM characterizations, we found that neither aluminum alkoxide nor boehmite sol was suited to be incorporated into the template pores to achieve stable alumina frameworks under our experimental conditions. The employment of aluminum nitrate as a precursor and then in situ precipitation into the template pores led to stable alumina frameworks after 4 repeated filling cycles. Direct decomposition of alumina nitrate can also yield ordered mesoporous alumina but with poor crystallized walls.
Qian Liu Aiqin Wang Xiaodong Wang Tao Zhang
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P. O. Box 110, Dalian 116023;Grad Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P. O. Box 110, Dalian 116023
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）