Aluminated hierarchical silicalite-2 particles: Catalyst with remarkably increased lifetime for methanol to hydrocarbons

作者：Ding, Jian; Hu, Jiangbo; Guan, Yejun; Wu, Haihong^*; He, Ming-yuan^*

来源：Catalysis Communications, 2016, 86: 139-142.

DOI：10.1016/j.catcom.2016.08.023

• silicalite-2
• hierarchical ZSM-11
• mesoporosity
• alumination
• methanol conversion

Aluminated hierarchical silicalite-2 with both large particle size and high external surface area was prepared by aluminating silicalite-2 under the protection of TBA(+) cations in a mild alkaline solution. The textural and acidic properties of thus formed material (Z11-meso) were characterized by SEM, TEM, XRD, N-2 adsorption, FFIR, NH3-TPD, and Al-27 NMR spectroscopy. The resulting hierarchical Z11-meso contained mainly tetrahedral coordinated aluminum species with low Bronsted/Lewis ratio (B/L) while preserved the zeolitic structure. Owning to the high external surface area (S-ext), hierarchical porous structures and low B/L ratio, Z11-meso outperformed the micro porous ZSM-11 counterparts in methanol to hydrocarbons in terms of both activity and stability.

• 出版日期2016-11-5
• 单位华东师范大学