Solvent-Free Synthesis of c-Axis Oriented ZSM-5 Crystals with Enhanced Methanol to Gasoline Catalytic Activity
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- 作者：Ziyu Liu ; Dan Wu ; Shu Ren ; Xinqing Chen ; Minghuang Qiu ; Xian Wu ; Chengguang Yang ; Gaofeng Zeng and Prof. Yuhan Sun
- 刊名：ChemCatChem
- 出版年：2016
- 出版时间：November 8, 2016
- 年：2016
- 卷：8
- 期：21
- 页码：3317-3322
- 全文大小：953K
- ISSN：1867-3899
文摘
ZSM-5 crystals with controllable c-axis length were successfully synthesized through a one-pot solvent-free route, with urea as an additive. X-ray diffraction patterns (XRD) show that the prepared samples exhibit high crystallinity. N2 adsorption–desorption isotherms and mercury intrusion porosimetry (MIP) analysis together with TEM observations indicate that micro-, meso-, and macropores exist in the obtained samples. Catalytic tests for the methanol to gasoline (MTG) conversion showed that the prepared c-axis oriented hierarchical ZSM-5, which allow fast mass transfer, exhibited both 100 % methanol conversion and far longer lifetime (900 h) than those of ZSM-5 with conventional morphology (350 h) in the MTG reaction. The enhanced MTG performance by the c-axis oriented zeolite under one-pot solvent-free synthesis is of great importance as it is easily scaled-up for industrial applications.