期刊
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
卷 66, 期 2, 页码 223-234出版社
EDP SCIENCES S A
DOI: 10.2516/ogst/2011003
关键词
-
资金
- Ministry of Knowledge Economy, Republic of Korea [2009101010004C]
- KEPCO
- Korea South-East Power Company, Ltd
- Korea Western Power Company, Ltd
- Korea Midland Power Company, Ltd
- Korea Southern Power Company, Ltd
- Korea East-West Power Company, Ltd
- Ministry of Knowledge Economy (MKE), Republic of Korea [2009101010004C] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Effects of Support on the Performance of NiO-Based Oxygen Carriers - The performance of an oxygen carrier for Chemical Looping Combustion varies with the support material used. NiO oxygen carriers were prepared using 60 or 70 wt% NiO and different raw support materials (gamma-Al2O3, pseudoboehmite, alpha-Al2O3, gamma-Al2O3 mixed with MgO, hydrotalcite, MgAl2O4, and gamma-Al2O3 with added graphite) by the mechanical mixing method. Reactivity tests were conducted using a thennogravimetric analyzer (TGA) at 950 degrees C. The oxygen carriers prepared using gamma-Al2O3, gamma-Al2O3 mixed with a small amount of MgO, hydrotalcite, and MgAl2O4 showed high oxygen transfer capacity, high oxygen utilization, and a high oxygen transfer rate. Graphite addition to gamma-Al2O3 did not increase the surface area or reactivity. The use of pseudoboehmite as a support led to a significant decrease in oxygen transfer capacity and severe agglomeration of the oxygen carriers during the redox reaction. The increase in MgO content in the raw support materials decreased the reduction reactivity. The oxygen carriers prepared with alpha-Al2O3 showed less oxygen transfer capacity than the other oxygen carriers. The differences in the reactivity according to the support type were explained by the relative strength of NiO-support interaction obtained from the temperature-programmed reduction analysis. The reactivity test results in this work indicate that gamma-Al2O3 and hydrotalcite could be desirable raw support materials to prepare highly reactive NiO oxygen carriers with high NiO content.
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