Ir/Ce_xZr_(1-x)O_2/Al_2O_3/FeCrAl高温甲醇水蒸气重整催化剂的研究  

Ir/Ce_xZr_(1-x)O_2/Al_2O_3/FeCrAl Catalysts for High Temperature Steam Reforming of Methanol

作　　者：郏景省[1] 周瑾[1] 张纯希[1] 刘娜[1] 王淑娟[1] 袁中山[1] 王树东[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《中国稀土学报》2008年第3期276-280,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金重大项目(20590365);国家重点基础研究发展规划项目(2004CB719506);国家自然科学基金面上项目(20476103)资助

摘　　要：对Ir/CexZr1-xO2/Al2O3/FeCrAl催化剂的制备及其在高温甲醇水蒸气重整中的应用进行了研究。通过XRD,SEM,TPR等表征对FeCrAl箔片、CexZr1-xO2/Al2O3/FeCrAl样品及CexZr1-xO2粉体进行了分析;比较了以FeCrAl合金和陶瓷蜂窝为载体的高温水蒸气重整催化剂的性能;针对CexZr1-xO2涂层中Ce/Zr比例对催化剂性能的影响进行了研究。在100 h寿命评价中,Ir/Ce0.8Zr0.2O2/Al2O3/FeCrAl催化剂显示出了较好的催化活性和稳定性。Ir/CexZr1-xO2/A12O3/FeCrAl catalysts were prepared for the high temperature steam reforming of methanol. The catalysts were characterized by X-ray powder diffraction （XRD）, scanning electron micro-scope （SEM） and temperature-programmed reduction （TPR）. The FeCrAl support showed better stability than ceramic support in the high temperature steam reforming of methanol. The effect of the Ce/Zr ratio of the CexZr1-xO2 washcoat was also investigated and the optimal Ce/Zr ratio was 4/1. The Ir/Ce0.8 Zr0.2 O2/ Al2O3/FeCrAl catalyst showed good performance during 100 h test.

关 键 词：金属载体 铈锆固溶体 甲醇水蒸气重整 高温 稀土 

分 类 号：O643[理学—物理化学]