摘要
用ＸＲＤ方法对Ｆｅ２（ＳＯ４）３／γ－Ａｌ２Ｏ３催化剂进行了表征，发现在Ｆｅ担载量不大于７ｗ％时，Ｆｅ２（ＳＯ４）３单层分散在γ－Ａｌ２Ｏ３的表面上。ＩＲ检测结果表明，在该催化剂表面上Ｌ酸中心与Ｂ酸中心共存，Ｌ酸量与Ｂ酸量的比例随焙烧温度的升高而增大。
The surface structure of Fe 2(SO 4) 3/γ Al 2O 3 catalyst was investigated It was found that a monolayer of Fe 2(SO 4) 3 was formed on the surface of γ Al 2O 3 if the Fe loading was no more that 7w% If the Fe loading exceeds this value,hexagonal crystals of Fe 2(SO 4) 3 may appear Existence of both Lewis and Br o ¨nsted acid sites on the catalyst surface were detected by IR spectra,and the ratio of these two types of acid sites changed with the calcination temperature
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
1997年第1期13-17,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
丁烯齐聚反应
催化剂
酸催化
Fe 2(SO 4) 3/γ Al 2O 3 catalyst
monolayer
Lewis and Br o ¨nsted acid sites
