Synthesis and characterization of a new mesoporous alumina-pillared titanate with a double-layer arrangement structure

被引:27
作者
Kooli, F
Sasaki, T
Rives, V
Watanabe, M
机构
[1] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan
[2] Univ Salamanca, Dept Chem, E-37008 Salamanca, Spain
关键词
D O I
10.1039/a908166f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Direct reaction of a colloidal suspension of an exfoliated layered titanate with an aluminium polyoxocation solution produced an ordered phase with a large basal spacing of 2.6 nm. Taking into account the starting Al/titanate molar ratio this swelling can be ascribed to the intercalation of double layers of Al-13 polyoxocations between the titanate sheets. Heat-treatment at 600 degrees C resulted in an alumina-pillared titanate with specific surface areas ranging from 270 to 300 m(2) g(-1) and a pore volume of 0.25 mL g(-1) (liquid nitrogen). The material was mainly mesoporous, the predominant pores having a diameter close to 4.0 nm. The acidity of the pillared titanate was ca. 0.60 mmol of protons g(-1).
引用
收藏
页码:497 / 501
页数:5
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