Physico-chemical properties and reactivity of Au/CeO2 catalysts in total and selective oxidation of COD

被引：38

作者：

Arena, F.

Famulari, P.

Interdonato, N.

Bonura, G.

Frusteri, F.

Spadaro, L.

机构：

[1] Univ Messina, Dipartimento Chim Ind & Ingn Mat, I-98166 Messina, Italy

[2] Ist CNR ITAE Nicola Giordano, I-98126 Messina, Italy

来源：

CATALYSIS TODAY | 2006年 / 116卷 / 03期

关键词：

Au/CeO2; catalyst; preparation method; total and selective CO oxidation; chlorine effect;

D O I：

10.1016/j.cattod.2006.05.082

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effects of the preparation method (deposition-precipitation, incipient-wetness, combustion) on the structure and redox properties of 1% Au/CeO2 catalyst have been probed by TPR, XRD, and TEM techniques. The catalytic pattern in total (COX) and selective (SCOX) CO oxidation has been assessed by temperature programmed reaction tests in the range 273-473 K. Controlling residual chlorine, the synthesis route determines the strength of the Au-CeO2 interaction which affects both the reduction of the active phase and the CO oxidation functionality. Removal of chlorine by washing in a diluted alkaline solution enables then an easy reduction of Au precursor levelling off the reactivity of the Au/CeO2 catalysts. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：384 / 390

页数：7

共 23 条

[1] TEMPERATURE-PROGRAMMED REACTION - A POWERFUL AND RELIABLE METHOD FOR CATALYST TESTING IN THE PARTIAL OXIDATION OF METHANE TO FORMALDEHYDE [J].