Integrating pore interconnectivity and adaptability in a single crystal hierarchical zeolite for liquid alkylation

Baoyu Liu, Jiajin Huang, Zhantu Liao, Chongzhi Zhu, Qiaoli Chen, Guan Sheng, Yihan Zhu, Yi Huang, Jinxiang Dong

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Zeolite belongs to one of the most important families of solid acid catalysts in chemical industries. It is, however, severely constrained by the diffusion limitation for bulky molecules, a lack of multifunctionality for sequential reactions and pore adaptability toward specific adsorbates due to its small micropore size and simple aluminosilicate framework. Introducing mesopores into a zeolite toward realizing hierarchical zeolites is a prevailing strategy but one that usually suffers from compromised crystallinity as well as insufficient interconnectivity and openness of the mesopores. Herein, a novel acid-redox co-functionalized single-crystalline zeolite with highly open and interconnected mesopores is designed and fabricated. As a proof-of-concept study, we integrate solid acid and Fe-oxy redox sites into a hierarchical MEL zeolite with well-characterized microporosity and mesoporosity. This zeolite exhibits superior activity and stability toward alkylation between mesitylene with benzyl alcohol, arising from greatly facilitated intra-crystal molecular diffusion, mitigated metal leaching and optimized adsorbate-pore wall interactions.
Original languageEnglish (US)
JournalAIChE Journal
DOIs
StatePublished - Jan 20 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-12-15
Acknowledgements: This work was supported by the Natural Science Foundation of China (No. 21978055 and 21808040), the Science and Technology Program of Guangzhou, China (201804010172) and “High-level Talents Program” of Pearl River (2017GC010080). Y. Zhu acknowledges the financial support from the National Natural Science Foundation of China (Grant No. 21771161) and Thousand Talents Program for Distinguished Young Scholars.

ASJC Scopus subject areas

  • General Chemical Engineering
  • Biotechnology
  • Environmental Engineering

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