五配位铝强化硅铝固体酸的固体核磁共振研究

王子春,黄骏,姜怡娇

Solid-State NMR Spectroscopy Studies of Enhanced Acidity of Silica-Aluminas Based on Penta-Coordinated Aluminum Species

Zi-chun WANG,Jun HUANG,Yi-jiao JIANG

表1 AlV富集的ASAs中不同铝配位及B酸的浓度[6, 9, 10]

Table 1 Al concentration and population density of BASs in AlV-enriched ASAs[6, 9, 10]

Position Catalysts AlIV (at. %)a AlV (at. %)a AlVI (at. %)a BAS density (mmol/g)b 1 SA/10 62 37 1 9.8×10-2 2 SA/30 51 48 1 11.1×10-2 3 SA/50 42 51 7 13.4×10-2 4 SA/70 41 55 4 15.1×10-2