AlPO4 as a Support Capable of Minimizing Threshold Loading of Rh in Automotive Catalysts

被引：57

作者：

Machida, Masato ^{[1
]}

Murakami, Kyosuke ^{[1
]}

Hinokuma, Satoshi ^{[1
]}

Uemura, Kosuke ^{[1
]}

Ikeue, Keita ^{[1
]}

Matsuda, Mitsuhiro ^{[2
]}

Chai, Maorong ^{[3
]}

Nakahara, Yunosuke ^{[3
]}

Sato, Takahiro ^{[3
]}

机构：

[1] Kumamoto Univ, Grad Sch Sci & Technol, Dept Nano Sci & Technol, Kumamoto 8608555, Japan

[2] Kumamoto Univ, Grad Sch Sci & Technol, Dept Mat Sci & Engn, Kumamoto 8608555, Japan

[3] Mitsui Min & Smelting Co Ltd, Catalyst Div, Parts & Components Sector, Ageo, Saitama 3620025, Japan

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 09期

关键词：

NITRIC-OXIDE; RH/AL2O3; DISPERSION; OXIDATION; STABILITY;

D O I：

10.1021/cm9005844

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：

An experiment was conducted to demonstrate that aluminum phosphate (AlPO4) becomes an efficient and robust support material to produce optimum metal-support interactions that can reduce significantly Rh loading, owing to thermally stable and highly dispersed Rh nanoparticles anchored strongly onto the phosphate surface. A solution of 0.05 mol of H 3PO4 in 50 mL of deionized water was added dropwise to a solution containing 0.05 mol of Al(NO3)3 in 50 mL of deionized water with vigorous stirring for the preparation of AlPO4. The white gel obtained was washed with deionized water, dried in air at 100°C, and calcined in air at 1000°C for 5 h. TEM image from Rh/AlPO4 confirms that highly dispersed Rh particles of diameters around 1-4 nm mostly remain, although a small number of agglomerates more than 10 nm are also present.

引用

页码：1796 / 1798

页数：3

共 17 条

[1] XAFS CHARACTERIZATION OF RH/AL2O3 AFTER TREATMENT IN HIGH-TEMPERATURE OXIDIZING ENVIRONMENTS [J].