乙醇水蒸汽重整制氢催化剂NiO-CeO_2/ZnO研究  

Catalysts research for hydrogen production from steam reforming of ethanol over NiO-CeO_2/ZnO

作　　者：朱跃辉[1,2] 吴锋[1,2] 吴川[1,2] 

机构地区：[1]北京理工大学化工与环境学院,北京100081 [2]国家高技术绿色材料发展中心,北京100081

出　　处：《电源技术》2010年第1期13-15,共3页Chinese Journal of Power Sources

基　　金：国家"973"计划(2009CB220100);北京市优秀人才培养资助项目(20071D1600300396)

摘　　要：通过共沉淀法制备了一系列添加CeO2改性的NiO/ZnO催化剂,并采用X射线衍射光谱法(XRD)、扫描电子显微镜(SEM)等手段进行了表征,发现:适量CeO2的加入可以有效地促进NiO的分散,减小NiO颗粒的大小。同时对CeO2改性的NiO/ZnO催化剂进行了测试发现:CeO2含量为5%(质量分数)的NiO/ZnO催化剂氢气选择性最好。350℃时,氢气的选择性就可达61.66%,并随温度的升高而升高,在650℃时,氢气的选择性达到68.37%。5Ce催化剂650℃30h稳定性测试发现,氢气的选择性一直保持在68%以上,没有明显的下降。A series of CeO2 modified NiO/ZnO catalysts were synthesized by co-precipitation method. The structure and performance of the catalysts were measured by X-ray diffraction and SEM. The results show that the proper quantity of CeO2 can enhance the dispersion and reduce particulate of NiO, and NiO/ZnO with 5% CeO2 content shows the highest hydrogen selectivity. Hydrogen selectivity can reach 61.66% at 350 ℃, which increases with temperature rise, and reaches 68.37% at 650 ℃ . 30-hour durability test for 5Ce catalyst at 650 ℃ show that hydrogen selectivity keeps above 68% with no drop significantly.

关 键 词：燃料电池 重整制氢 乙醇 NIO CEO2 ZNO 

分 类 号：TM911.4[电气工程—电力电子与电力传动]