Formation of Amorphous Pt Oxides: Characterization and Their Catalysis

被引：3

作者：

Kameoka, Satoshi ^{[1
]}

Shimoda, Masahiko ^{[2
]}

Matsushita, Yoshitaka ^{[2
,3
]}

Yamashita, Yoshiyuki ^{[2
,3
]}

Katsuya, Yoshio ^{[3
]}

An-, Masahiko Tanaka ^{[3
]}

Tsai, Pang ^{[1
,2
]}

机构：

[1] Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan

[2] NIMS, Tsukuba, Ibaraki 3050047, Japan

[3] NIMS, Synchrotron Xray Stn SPring 8, Sayo, Hyogo 6795148, Japan

来源：

MATERIALS TRANSACTIONS | 2015年 / 56卷 / 04期

关键词：

amorphous platinum (Pt) oxides; PtOx; catalytic material; leaching; Cu3Pt; carbon monoxide (CO) oxidation; RAY PHOTOELECTRON-SPECTROSCOPY; INTERMETALLIC COMPOUND; NANOPOROUS GOLD; CO OXIDATION; PLATINUM; SURFACE; REDUCTION;

D O I：

10.2320/matertrans.MF201410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amorphous Pt oxides (am-PtOx) were formed by the leaching of copper from a Cu3Pt alloy in concentrated HNO3 at 323K for 12 h. The resulting am-PtOx was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TG-DTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7 m(2)/g) and decomposed to form Pt and O-2 at approximately 720 K. The catalytic performance of the am-PtOx during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtOx with applications as a catalyst.

引用

页码：490 / 494

页数：5

共 16 条

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