溶胶凝胶法制备还原态K-Co-Mo催化剂的合成醇性能  

CATALYTIC PROPERTIES OF REDUCED K-Co-Mo CATALYSTS PREPARED BY SOL-GEL METHOD FOR MIXED ALCOHOL SYNTHESIS

作　　者：孙中海[1] 鲍骏[1] 卞国柱[1] 伏义路[1] 

机构地区：[1]中国科学技术大学化学物理系,安徽合肥230026

出　　处：《燃料化学学报》2003年第1期75-79,共5页Journal of Fuel Chemistry and Technology

摘　　要：应用溶胶 凝胶法制备了还原态K Co Mo催化剂,比较了不同的组分和不同的反应条件对合成醇性能的影响。实验结果表明,适量钾和钴助剂的添加能显著提高催化剂合成醇的性能,尤其是提高了C2+醇的选择性。此外,反应温度、压力以及空速对合成醇影响明显,升高温度可以提高催化反应中低碳醇的收率,但选择性下降;增加压力和空速可以提高低碳醇的收率和选择性,对合成低碳醇有利。在230℃,6 0MPa,14400h-1条件下,催化剂合成低碳醇的收率为375 4g kg·h,选择性为70 2%,C1OH C2+OH为0 48。The effect of reduced KCoMo catalysts made by solgel methods on the performance for mixed alcohol synthesis is investigated The results reveal that the addition of promoter potassium and cobalt enhances the alcohol production remarkably, especially the selectivity to C2+ alcohol In addition, the catalytic properties are obviously influenced by reaction conditions Increasing the reaction temperature improves the spacetimeyield(STY) of alcohol, but decreases the selectivity to alcohol while raising the pressure or the space velocity are in favor of the alcohol synthesis Under the conditions of 230?℃,60?MPa,14?400?h-1, over the reduced KCoMo ultrafine catalyst, the STY and selectivity of mixed alcohol are 3754?g/kg·h and 702%,respectively, and the ratio of C1OH to C2+OH is only 048

关 键 词：溶胶-凝胶法 制备 还原态 K-CO-MO催化剂 合成 低碳醇 催化性能 钾 钴 钼 

分 类 号：O623.411[理学—有机化学] O643.36[理学—化学]