小晶粒β沸石催化的苯甲醚与乙酸酐酰化反应  

ACETYLATION OF ANISOLE AND ACETIC ANHYDRIDE OVER β ZEOLITES WITH SMALL PARTICLE SIZE

作　　者：吉向飞[1,2] 秦张峰[1] 董梅[1] 王国富[1] 李俊汾[1,2] 王建国[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化重点实验室,山西太原030001 [2]中国科学院研究生院,北京100041

出　　处：《石油学报（石油加工）》2006年第B10期299-301,共3页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金（20473110）和国家重点基础研究发展规划项目（G2000048010）资助

摘　　要：合成了结晶度较高的小粒晶β沸石，TEM表征结果表明，其粒径分布在210～300nm之间。以该小粒晶β沸石为催化剂，对苯甲醚和乙酸酐酰化反应进行了研究。结果表明，反应温度和压力对催化剂的活性和稳定性都有很大影响。随着温度的升高，催化剂活性增加，但稳定性降低；随着压力的升高，催化剂的活性有一极大值。小品粒β沸石与商业β沸石催化性能的对比研究发现，小品粒β沸石具有较高的催化活性，这可能是由于其粒径较小，反应物更容易接近其活性位的缘故。β zeolites of small particle size in the range of 210-300 nm were synthesized. The catalytic performance of the β zeolite for the acetylation of anisole and acetic anhydride was investigated in a fixed-bed reactor. The results indicated that both temperature and pressure have significant effects on the conversion of acetic anhydride and the stability of catalyst. High activity was obtained with β zeolite of small particle size compared with that of a commercial β zeolite, which may be contributed to that the small crystal favors the access of reactants to the active sites.

关 键 词：Β分子筛 苯甲醚 乙酸酐 酰化 

分 类 号：O643.32[理学—物理化学]