助剂引入对γ-Al_2O_3性质及其负载催化剂性能的影响  

Effect of additives on the characteristics of γ - Al_2O_3 and the performance of catalyst supported by the same γ - Al2O3

作　　者：王永林[1] 张成[1] 杨刚[1] 

机构地区：[1]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《石化技术与应用》2013年第3期199-201,共3页Petrochemical Technology & Application

摘　　要：采用NaAlO2-CO2法制备了γ-Al2O3,在制备过程中分别引入助剂SiO2,B2O3,P2O5,SiO2-B2O3,SiO2-P2O5,考察了不同助剂对γ-Al2O3性质及其负载催化剂性能的影响。结果表明,助剂能有效增加γ-Al2O3孔容和比表面积,其中复合助剂SiO2-P2O5的效果最为显著。助剂对γ-Al2O3热稳定性有很大影响。引入助剂能提高γ-Al2O3的总酸量及B酸含量。γ- Al2O3 was prepared by NaA1O2 - CO2 method, and the effects of additives SiO2 , B2O3 , P2O5 ,SiO2 -B2O3 and SiO2 -P2O5 introduced separately in the preparation process on the characteristics of γ- Al2O3 and the performance of the γ- Al2O3 supported catalyst were investigated. The resuits showed that the additives effectively improved the pore volume and specific area of the carrier, and among them, the compound additive SiO2 - P2 05 was the best. The additives had evident effect on the carrier and increased the total acid content and B acid content in the carrier.

关 键 词：γ-Al2O3助剂 孔结构 热稳定性 总酸量 加氢性能 

分 类 号：TQ426.6[化学工程]