Synthesis of mesoporous ZSM-5 using a new gemini surfactant as a mesoporous directing agent: A crystallization transformation process

Quanyi Wang, Yingxu Wei, Shutao Xu, Mozhi Zhang, Shuanghe Meng, Dong Fan, Yue Qi, Jinzhe Li, Zhengxi Yu, Cuiyu Yuan, Yanli He, Shuliang Xu, Jingrun Chen, Jinbang Wang, Bao Lian Su, Zhongmin Liu

Research output: Contribution to journalArticlepeer-review

Abstract

A new gemini surfactant, [C18H37(CH3)2-N+-(CH2)3-N+-(CH3)2C18H37]Cl2 (C18-3-18), has been successfully used as the mesopore directing agent in the hydrothermal synthesis of mesoporous ZSM-5 (MZSM-5). The synthesis of MZSM-5 was realized with a low temperature crystallization process at 130 °C. The amount of C18-3-18 used in the synthesis affected the relative crystallinity and the textural properties of the obtained MZSM-5. Detailed investigation showed that the formation of MZSM-5 followed a crystallization transformation process. The use of C18-3-18 resulted in the formation of mesoporous material during the early stage of the synthesis, which was converted into MZSM-5 crystals templated by tetrapropylammonium bromide to form the MFI phase. As the synthesis proceeded, the MZSM-5 crystals aggregated into particles by weak interactions. This work shows that C18-3-18 can be used as a mesopore directing agent, which could provide a route for the synthesis of other mesoporous zeolites.

Original languageEnglish
Pages (from-to)1727-1739
Number of pages13
JournalCuihua Xuebao/Chinese Journal of Catalysis
Volume35
Issue number10
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Crystallization transformation
  • Dual-templating
  • Gemini surfactant
  • Inter-crystalline mesopore
  • Mesoporous ZSM-5

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