插层化合物在膨化过程中的热分解动力学_英文_.pdfVIP

21 4 Vo.l 21 No. 4 2006 12 NEW CARBON MATERIALS Dec. 2006 Article ID: 2006) Kinetics of the thermal decomposition of intercalation compounds during exfoliation 1, 2 1 2 2 REN Hui , KANG Feiyu, JIAO Qingjie, CUIQ ingzhong ( 1. Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China; 2. N ationalKey Laboratory of xp losion Science and Technology, Beij ing Institute of Technology, Beij ing 100081, China) Abstract: The phase transfor ations and ther al deco position of the following graphite intercalation co pounds ( GICs), HNO CH COOHGIC, H SO GIC andH SO CH COOHGIC, were easured by an FT IRassociated TG ap 3 3 2 4 2 4 3 paratus. Using K issinger and Ozawa principles, the kinetic para eters of so e typical exfoliation reactions were evaluated and the ther aldeco position echanis of the exfoliation processwas deter ined. When theheating ratewas in the range of20- 80 / in, the activation energies of the exfoliation reactionswere all less than 120kJ/ o.l K eywords: Exfoliation; Ther al analysis; K inetics; Intercalation CLC num ber: TQ165 O643. 12 D ocum ent code: A 1 Introduction deco position were easured in situ w ith aFTIRasso ciated TG apparatus. Moreover, according toK issinger Expanded graphite is produced fr