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

作　　者：蔡芙蓉[1] 张玉兰[2] 张伟[2] 施力[1] 

机构地区：[1]华东理工大学石油加工研究所,上海200237 [2]华东理工大学分析测试中心

出　　处：《华东理工大学学报（自然科学版）》2006年第9期1034-1037,共4页Journal of East China University of Science and Technology

摘　　要：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.

关 键 词：Y型分子筛 酸性 红外光谱 LA2O3 烷基化 

分 类 号：O657.33[理学—分析化学]