One-step direct synthesis of mesoporous aluminosilicates Al-SBA-15 with cage-like macropores by using micrometer-sized aluminum balls  

作　　者：CAI HuaQiang ZHAO DongYuan 

机构地区：[1]Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Advanced Materials Laboratory,Fudan University,Shanghai 200433,China

出　　处：《Science China Chemistry》2009年第8期1090-1096,共7页中国科学（化学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 20890123 & 20721063);Shanghai Science & Technology Committee (08DZ2270500);Shanghai Leading Academic Discipline Project (No.B108)

摘　　要：Ordered mesoporous aluminosilicate Al-SBA-15 materials with cage-like macropores have been synthesized by using micrometer-sized aluminum balls as an Al source,tetraethyl orthosilicate(TEOS) as a silica source,and triblock copolymer Pluronic P123 as a template.The resulting materials were fully characterized by XRD,N2 adsorption,SEM,TEM,ICP-AES,and 27Al MAS-NMR.The products(Al-SBA-15) have ordered two-dimensional(2-D) hexagonal mesostructures(space group p6mm).The calcined Al-SBA-15 materials exhibit disordered macropores with diameters of about 70―80 nm and ordered mesopores with a diameter of ～5 nm,a BET surface area of about 500 m2/g,Si/Al ratio of 40―80,and a ratio of tetrahedral Al to octahedral Al sites of about 2:1.This combination of properties gives these materials potential applications in areas such as adsorption,catalysis and separation.Ordered mesoporous aluminosilicate Al-SBA-15 materials with cage-like macropores have been synthesized by using micrometer-sized aluminum balls as an Al source, tetraethyl orthosilicate (TEOS) as a silica source, and triblock copolymer Pluronic P123 as a template. The resulting materials were fully characterized by XRD, N2 adsorption, SEM, TEM, ICP-AES, and 27Al MAS-NMR. The products (Al-SBA-15) have ordered two-dimensional (2-D) hexagonal mesostructures (space group p6mm). The calcined Al-SBA-15 materials exhibit disordered macropores with diameters of about 70–80 nm and ordered mesopores with a diameter of ～5 nm, a BET surface area of about 500 m2/g, Si/Al ratio of 40–80, and a ratio of tetrahedral Al to octahedral Al sites of about 2:1. This combination of properties gives these materials potential applications in areas such as adsorption, catalysis and separation.

关 键 词：synthesis mesoporous materials ALUMINUM BALLS TEMPLATING Al-SBA-15 

分 类 号：O614.31[理学—无机化学]