摘要
合成了具有EUO拓扑结构的FZ-10分子筛,并对其进行改性研究,考察了催化剂酸强度分布和酸量对二甲苯异构反应性能的影响规律。结果表明:中等强度B酸中心数目较多的FCZ-102催化剂表现了更好的C_(8)芳烃收率和乙苯转化率,当二甲苯异构体接近热力学平衡组成、乙苯转化率为27%时,C_(8)芳烃收率达到98%以上。
The FZ-10 zeolite with EUO topological structure was successfully synthesized,and the modification study of FZ-10 was carried out. The effect of acid amount and acid strength distribution of catalyst on xylene isomerization was investigated. The results showed that the FCZ-102 catalyst with more medium strength B acid sites exhibited higher yield of C_(8) aromatics and higher conversion of ethylbenzene. The conversion of ethylbenzene was 27% and the yield of C_(8) aromatics reached more than 98% when the xylene isomers were close to the thermodynamic equilibrium composition.
作者
宋兆阳
徐会青
刘全杰
贾立明
SONG Zhao-yang;XU Hui-qing;LIU Quan-jie;JIA Li-ming(Sinopec Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China)
出处
《当代化工》
CAS
2021年第5期1030-1034,共5页
Contemporary Chemical Industry
基金
中国石化重点项目,TBA高效加氢精制催化剂开发(项目编号:082002)。
关键词
分子筛
二甲苯异构化
孔道结构
酸强度分布
Molecular sieves
Xylene isomerization
Pore structure
Acid strength distribution
