碱土金属添加剂对Cu-ZnO/SiO_2催化仲丁醇脱氢反应性能的影响  

Effect of Alkaline-Earth Metal Mg on Cu-ZnO/SiO_2 Catalysts in Dehydrogenation of 2-Butanol

作　　者：单洪岩[1] 宇博[1] 

机构地区：[1]吉林大学测试科学实验中心,长春130021

出　　处：《吉林大学学报（理学版）》2011年第3期540-543,共4页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:20675080)

摘　　要：采用碱土金属Mg对SiO2进行预处理后,用浸渍法制备Cu-ZnO/MgO-SiO2催化剂.研究不同质量分数Mg对催化剂的结构和性能的影响,考察该催化剂对仲丁醇脱氢活性和选择性的影响.采用XRD,TPD和TPR对催化剂进行表征.实验结果表明,Mg的加入提高了Cu组分的分散度,同时降低了催化剂表面的酸性.调节合适的Mg质量分数可获得性能较佳的仲丁醇脱氢催化剂.A series of Cu-ZnO/MgO-SiO2 catalysts were prepared via impregnation method with the support SiO2 modified by different contents of Mg and examined in dehydrogenation of 2-butanol.The effects of content of Mg on the structure and property of the catalysts were characterized by means of XRD,TPD and TPR technologies.The results indicate that the content of Mg can improve the dispersion of copper and the acid property of the catalysts.So,the appropriate content of Mg can improve the activity performance of Cu-ZnO/MgO-SiO2 catalysts.

关 键 词：碱土金属 Cu-ZnO/MgO-SiO2催化剂 仲丁醇 脱氢 

分 类 号：O643.38[理学—物理化学]