红外光谱法研究改性Y型分子筛表面酸性与活性的关系

Relationship between Surface Acidity and Activity of Modified Y Zeolite by FT-IR

用红外光谱法研究了改性Y型分子筛的表面酸性,并考察了烷基化反应活性与酸性质的关系。结果表明:经过离子交换之后的Y型分子筛催化剂活性和寿命没有明显提高,但是加La2O3后,总B、L酸量减少,催化剂的活性和寿命都得到了提高。

The relationship between surface acidity and alkylation reaction catalytic activity of modified Y zeolite was studied on fixed-bed reactor by FT-IR. Results show that the catalyst＇s activity and life span have no remarkable improvement after ion exchange while have good performance after adding La2O3, and the B,L acid are decreased.