Size dependent study of MeOH decomposition over size-selected pt nanoparticles synthesized via micelle encapsulation

被引：53

作者：

Croy, Jason R.

Mostafa, Simon

Liu, Jing

Sohn, Yong-Ho

Roldan Cuenya, Beatriz ^{[1
]}

机构：

[1] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

[2] Univ Cent Florida, Dept Mech Mat & Aerosp Engn, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA

来源：

CATALYSIS LETTERS | 2007年 / 118卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

methanol decomposition; MeOH; H-2; production; micelles; Pt; nanoparticle; TiO2; catalysis; XPS; TEM; AFM; mass flow reactor; mass spectrometry;

D O I：

10.1007/s10562-007-9162-1

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：

We present here the size-dependent decomposition of methanol (MeOH) over narrowly distributed Pt nanoparticles supported on nanocrystalline anatase TiO2 powder. Micelle encapsulation has been used to create Pt catalysts with average particle sizes of similar to 4, 6, and 8 nm. A packed bed mass flow reactor and mass spectrometry were employed to quantify the catalyst's activity and selectivity. Among the catalysts tested the smallest nanoparticles showed the best performance including an onset reaction temperature of similar to 145 degrees C. No byproducts such as CO2 or CH4 were observed in the test range of 100-330 degrees C.

引用

页码：1 / 7

页数：7

共 46 条

[21] Active sites on oxide surfaces:: ZnO-catalyzed synthesis of methanol from CO and H2 [J].