期刊
APPLIED CATALYSIS A-GENERAL
卷 364, 期 1-2, 页码 150-155出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2009.05.043
关键词
CO2 reforming; CH4 activation; Supported catalysts; Coke; Ni loading; Stability
Carbon dioxide reforming of methane to synthesis gas over Ni supported alumina catalysts was investigated at atmospheric pressure. Two supports: high surface area gamma-Al2O3 (SA-6175) and low surface alpha-Al2O3 (SA-5239) were used for the preparation of catalysts by the wet impregnation method. The reforming reactions were carried out using (CO2:CH4) feed ratio of 1:1, and reaction temperatures 500, 600, 700 and 800 degrees C. Influences of Ni loading, catalyst stability, coke deposition and synthesis gas ratio (H-2/CO) were studied. Spent and fresh catalysts calcined at 900 degrees C were characterized by XRD, SEM and TGA techniques. It was observed that increasing Ni loading increases the formation of carbon. For high surface area catalyst, at low Ni loading, no coke formation on the catalyst was obtained. Similarly, no carbon formation was observed for low surface catalyst at 800 degrees C reaction temperature with feed ratio of 1.3/1.0. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据