金属壁与催化层一体化内翅片管状催化剂的研究  

STUDY ON INNER FIN TUBE TYPE CATALYST WITH METAL WALL AND CATALYTIC LAYER

作　　者：应卫勇[1] 龟山秀雄[2] 

机构地区：[1]华东理工大学化学工程系 [2]东京农工大学工学部

出　　处：《催化学报》1997年第6期459-462,共4页

摘　　要：开发了内翅片管状金属材料经阳极氧化、封孔处理、催化剂组分负载制备金属壁与催化层一体化催化剂的制备方法．讨论了氧化膜厚度与阳极氧化时间，孔径分布与封孔处理条件，负载量与浸渍时间的关系．探讨了反应温度、孔径分布、氧化膜厚度对催化剂性能的影响．对于具有平均孔半径６～８ｎｍ，厚度为３６μｍ的催化剂，在反应温度２００℃，空速２４００ｈ－１，甲醇摩尔分数０１的条件下，甲醇脱氢生成一氧化碳的选择性接近１００％．The preparation method of the catalyst with metal wall and catalytic layer has been developed by anodic oxidation, pore sealing and impregnation of the catalytic composition. The relationship between alumina film thickness and the time of anodic oxidation, pore size distribution in various sealing conditions, and the change in the amount of Pd supported with time have been discussed. In the same condition of anodic oxidation, the alumina film thickness of the tube is not the same as that of the plate. Pore size distribution changes with the change of the sealing condition. Impregnation at low concentration of Pd in a long time has been utilized to obtain a uniform support of Pd from outside to inside of the catalytic layer. Factors affecting the catalytic properties, such as the silicon coating solution, the reaction temperature, the pore size distribution and the alumina film thickness, have been investigated in methanol dehydrogenation over the inner fin tube type Pd/SiO2/Al2O3/Al catalyst. In the conditions of the reaction temperature 200℃, atmospheric pressure, the space velocity 2400 h-1 and methanol mole fraction 01, the selectivity for carbon monoxide is almost 100%. The average pore radius and the film thickness of the catalyst are 6～8 nm and 36 μm, respectively.

关 键 词：内翅片管 钯催化剂 甲醇 脱氢 一氧化碳 

分 类 号：O643.36[理学—物理化学] O613.71[理学—化学]