| 초록 |
1,5-Dimethyltetralin (1,5-DMT) is useful intermediate to synthesize2,6-naphthalenedicarboxylic acid (2,6-NDCA) and is raw material for polyethylenenaphthalate(PEN). In this work, we investigate how framework Al concentration affectscyclization activity with dealumination by means of 27Al MAS NMR techniques. Toinvestigate relationship between acid sites configuration in the pore system and OTPcyclization reactivity, we tested dealuminated samples to the reaction. 27Al MAS NMRstudy revealed that highly dealuminated BEA had considerable amount ofnon-tetrahedral Al species and the activity of OTP cyclization clearly depended on theamount of Br nsted acid sites in the inner pore system. |
