Enhancing catalytic performance via structure core-shell metal-organic frameworks

Yanyan Gong, Ye Yuan, Cheng Chen, Pan Zhang, Jichao Wang, Anish Khan, Serge Zhuiykov, Somboon Chaemchuen, Francis Verpoort

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A core-shell structure metal-organic framework based on the Zr clusters bridging with BDC linkers (UiO-66) as a core-structure and BPYDC linkers (UiO-67-BPY) as a shell-structure was developed (UiO-67-BPY@UiO-66). The combination of several techniques such as XRD, FTIR, SEM, TEM, and surface area analysis etc. were applied for the characterization and confirmed a core-shell structure of UiO-67-BPY@UiO-66. Taking advantage of the high porous stability of the core-structure (UiO-66) and the presence of active Lewis basic sites from the bipyridinic linker in the shell layer (UiO-67-BPY) could be advantageous for basic-catalyzed reactions. The synthesized core-shell material was applied as a heterogeneous catalyst for the Knoevenagel condensation as a model reaction. An excellent catalytic performance was obtained by the core-shell material over traditional MOFs and other previous reports based on MOFs. The excellent dispersion of the active sites (Lewis basic) in the outer layer of the designed core-shell structure was a breakthrough to prevent mass diffusion limitation during catalysis. Additionally, the catalyst can be recycled and maintained its high catalytic performance at least for four cycles.

Original languageEnglish
Pages (from-to)371-379
Number of pages9
JournalJournal of Catalysis
Volume375
DOIs
Publication statusPublished - 1 Jul 2019

Keywords

  • Core-shell structure
  • Heterogeneous catalysis
  • Knoevenagel condensation
  • MOF@MOF
  • MOFs

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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  • Cite this

    Gong, Y., Yuan, Y., Chen, C., Zhang, P., Wang, J., Khan, A., Zhuiykov, S., Chaemchuen, S., & Verpoort, F. (2019). Enhancing catalytic performance via structure core-shell metal-organic frameworks. Journal of Catalysis, 375, 371-379. https://doi.org/10.1016/j.jcat.2019.06.031