Small Ti clusters for catalysis of hydrogen exchange in NaAlH4

被引：159
|
作者：
Fichtner, M [1 ]
Fuhr, O
Kircher, O
Rothe, J
机构：
[1] Karlsruhe Res Ctr, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[2] Karlsruhe Res Ctr, Inst Nucl Waste Management, D-76021 Karlsruhe, Germany
来源：
NANOTECHNOLOGY | 2003年 / 14卷 / 07期
关键词：
D O I：
10.1088/0957-4484/14/7/314
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Colloidal Ti has been synthesized following a method described in the literature. Extended x-ray absorption fine structure measurements indicate the presence of small colloidal entities, consisting of only a few core Ti atoms which are coordinated by O atoms from tetrahydrofuran (THF). The results can be explained by the proposed structure of Ti-13.6THF, in which the Ti cluster has the shape of a distorted icosahedron. The Ti colloid was used to prepare a functional nanocomposite by ball-milling the clusters with NaAlH4. The nanocomposite showed superior hydrogen exchange kinetics when compared to the state of the art in the literature.
引用
收藏
页码：778 / 785
页数：8
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