Tuning the mesoscopically structured ZSM-5 nanosheets for the alkylation between toluene and methanol

Feng Xiong, Chen Ji, Sehngzhi Gan, Peng Liang, Harvey Yi Huang, Jin Shang, Baoyu Liu, Jinxiang Dong

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Mesoscopically structured ZSM-5 nanosheets were prepared as highly active catalysts for the alkylation between toluene with methanol. The results showed that the Brønsted acid sites of ZSM-5 nanosheets were mainly distributed on the external surface in aluminum-rich zeolites owing to the charge-balance between positive quaternary ammonium cation (N +) in C ph-10-6-6, Na + ions and negative aluminosilicate species. In addition, it revealed that high alkalinity was easier to depolymerize the ≡Si-O-Si≡ species in Aluminum-rich synthesis gel, and the high alkalinity was required for silica-rich systems to dissolve silica species in order to finish the self-assemble process, leading to ZSM-5 nanosheets with high alkalinity presenting enhanced catalytic performance. Moreover, the optimized ZSM-5-50-2.5 was effective for the alkylation between toluene and methanol with toluene conversion of up to 50%, and it was stably operated for 48 h under the harsh conditions of WHSV = 32.5 h −1 with a desired stability.

Original languageEnglish
Article numbere18054
JournalAIChE Journal
Volume69
Issue number6
Early online date24 Jan 2023
DOIs
Publication statusPublished - Jun 2023

Keywords / Materials (for Non-textual outputs)

  • ZSM-5 zeolite
  • alkylation
  • catalysis
  • mesopore
  • nanosheets

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