논문 해외 국제전문학술지(SCI급) Structural and Physicochemical Effects of MFI Zeolite Nanosheets for the Selective Synthesis of Propylene from Methanol
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016-03
- 저자명 Kim, Y., Kim, J.-C., Jo, C., Kim, T.-W.,* Chae, H.,* and Kim, C.-U.
- 학술지명 Microporous and Mesoporous Materials
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 원문 링크 https://www.sciencedirect.com/science/article/abs/pii/S1387181115005454
홈페이지논문 초록 (Abstract)
MFI zeolite nanosheets (NS-MFI) with two different thicknesses (2.5 nm and 7.5 nm) and various Si/Al2 ratios (100–700) were prepared and their catalytic activities for propylene production from methanol were investigated. According to analyses of X-ray diffraction patterns as well as scanning electron microscopy, transmission electron microscopy, and N2 adsorption results, all NS-MFI catalysts had a well-developed nanosheet structure with a high specific surface area and a large mesopore volume. In the methanol-to-propylene (MTP) reaction, they showed greater activity and selectivity to propylene and longer lifetimes than commercial ZSM-5. Among these NS-MFI zeolites, thinner NS-MFI had better catalytic activity in MTP reactions than thicker NS-MFI at the same Si/Al2 ratio, and superior catalytic performance for MTP reactions was observed at a Si/Al2 ratio of 500. These results can be attributed to the appropriate acid density and the facile diffusion of molecules in the NS-MFI catalysts.