Catalytic decomposition of methanol to carbon monoxide and hydrogen over palladium supported on Ce0.65Zr0.30La0.05O2 and La-Al2O3

被引：16

作者：

Zhao, Ming ^{[1
]}

Li, Xue ^{[1
]}

Zhang, Lihua ^{[1
]}

Zhang, Chao ^{[1
]}

Gong, Maochu ^{[1
]}

Chen, Yaoqiang ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Minist Educ, Key Lab Green Chem & Technol, Chengdu 610064, Peoples R China

来源：

CATALYSIS TODAY | 2011年 / 175卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ce0.65Zr0.30La0.05O2; Palladium based catalysis; XPS; Methanol decomposition; LOW-TEMPERATURE; CERIA; PD/CEO2;

D O I：

10.1016/j.cattod.2011.05.014

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this article, La-Al2O3 and Ce0.65Zr0.30La0.05O2 were used as support to prepare palladium catalyst for methanol decomposition to synthesis gas at low temperature. The catalysts were characterized by nitrogen adsorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and NH3-temperature-programmed desorption (TPD). XPS results confirm that palladium exists as oxidation state in the two catalysts and has strong interaction with ceria-zirconia solid solution. The result of H-2-TPR reveals that the reduction temperature of PdO slightly shifts to high temperature due to the strong interaction between palladium and Ce0.65Zr0.30La0.05O2. For Pd/Ce0.65Zr0.30La0.05O2 catalyst, the higher oxygen storage capacity is beneficial to the Pd species in a more active Pd delta+ state. Furthermore, the results of the methanol decomposition reaction show that the Pd/Ce0.65Zr0.30La0.05O2 catalyst has high catalytic activity. The conversion of methanol achieves 100% at 220 degrees C over Pd/Ce0.65Zr0.30La0.05O2. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：430 / 434

页数：5

共 21 条

[1] CO oxidation on Pd/CeO2-ZrO2 catalysts [J].