Effect of Tiny Pd Addition to Ti for Their Hydrogenation Properties

DOI

10.2991/ame-17.2017.10How to use a DOI?

Keywords

Hydrogen storage, Initial activation, Catalyst, Ti-Pd.

Abstract

Titanium (Ti) based hydrogen-storage materials can absorb hydrogen under mild conditions. However, the materials could not absorb hydrogen without initial activation, owing to the formation of surface oxide layer. For mitigate the initial activation conditions, addition of Pd to Ti based materials were conducted. In spite of a tiny content of Pd, the addition was effective. In this study, effect of Pd in Ti oxide layer on initial hydrogenation property was investigated. Ti (1-x) Pd x (x=0, 0.002, 0.005, 0.010) alloys were fabricated with an arc-melting machine in an Ar atmosphere. Turnings-like specimens were obtained by milling the ingots with a milling machine for increase of specific surface. Initial hydrogenation properties were carried out with a Sieverts- type apparatus. Surface property of Ti 0.990 Pd 0.010 before hydrogenation was carried out by X-ray photoelectron spectroscopy. Pd-added Ti alloys rapidly formed Ti hydride compared with pure Ti. Pd in the oxide film existed as valence state of 0 (Pd 0 ). Because metallic Pd was well-known as catalyst for dissociation of molecular hydrogen, Pd-added Ti alloys can faster absorb hydrogen

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ryota Kondo
AU  - Hiroyuki T. Takeshita
PY  - 2017/04
DA  - 2017/04
TI  - Effect of Tiny Pd Addition to Ti for Their Hydrogenation Properties
BT  - Proceedings of the 3rd Annual International Conference on Advanced Material Engineering (AME 2017)
PB  - Atlantis Press
SP  - 59
EP  - 61
SN  - 2352-5401
UR  - https://doi.org/10.2991/ame-17.2017.10
DO  - 10.2991/ame-17.2017.10
ID  - Kondo2017/04
ER  -