Physicochemical characteristics of ZSM-5/SAPO-34 composite catalyst for MTO reaction |
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Authors: | Ho-Jeong Chae |
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Institution: | Alternative Chemicals/Fuel Research Center, Green Chemistry Division, Korea Research Institute of Chemical Technology, Jang-dong 100, Yuseong-gu, Daejeon 305-606, Republic of Korea |
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Abstract: | SAPO-34 and ZSM-5 are the most well-known catalyst for MTO reaction. A combination of ZSM-5 and SAPO-34 might give rise to optimal catalyst to meet a change of market demand for ethylene, propylene and butadiene. In this study, we have developed ZSM-5/SAPO-34 composite catalysts to control the composition of light olefins in MTO reaction. ZSM-5/SAPO-34 composite catalysts showed very different physicochemical and catalytic properties with respect to ZSM-5 and SAPO-34 synthetic procedure. The physicochemical properties of the composite catalysts have been compared by XRD, SEM, N2 isotherm, FT-IR and NH3-TPD. Their catalytic performances were also evaluated for MTO reaction. The series composite catalyst synthesized by successive crystallization of SAPO-34 synthetic gel after ZSM-5 crystallization exhibited relatively high catalytic performance. |
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Keywords: | Sapo-34 ZSM-5 Composite MTO |
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