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

页码：778 / 785

页数：8

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