铁铬催化剂强度与密度、孔结构的统计关联  

STATISTICAL CORRELATION BETWEEN MECHANICAL STRENGTH, PORE STRUCTURE AND DENSITY OF Fe-BASED WGSR CATALYSTS

作　　者：李永丹[1] 王大祥[1] 康慧敏[1] 张鎏[1] 

机构地区：[1]天津大学化学工程系

出　　处：《天津大学学报》1993年第4期122-128,共7页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金

摘　　要：研究了圆柱状铁铬氧化物催化剂的密度、孔结构与强度的统计关系。结果表明:铁铬催化剂的强度与孔的形状密切相关。相关分析表明:铁铬催化制颗粒聚集体的强度与密度的关系符合Duckworth—Knudsen模型。改变煅烧条件可以调整催化剂中各种结合力的大小,以便同时提高铁铬催化剂的机械强度和内表面利用率。The mechanical strength of Fe-based WGSR (water gas shift reaction ) catalysts in their oxide states were correlated with their pore structure and density by the statistical method. Duckworth-Knudsen model is proved to be suitable for describing the relationship between the density and mechanical strength of these catalysts, The differences in parameters in the Duckworth-Knudsen equations for catalysts prepared in different ways indicate that the catalyst with high mechanical strength and small density can be obtained by carefully adjusting the preparation conditions.

关 键 词：催化剂 机械强度 铁铬氧化物 

分 类 号：TQ426.82[化学工程]