Palladium nanoparticles supported on a two-dimensional layered zeolitic imidazolate framework-L as an efficient size-selective catalyst

Songlin Xue, Hong Jiang, Zhaoxiang Zhong, Ze Xian Low, Rizhi Chen, Weihong Xing

Research output: Contribution to journalArticleResearchpeer-review

24 Citations (Scopus)

Abstract

A new Pd@ZIF-L hybrid catalyst having a unique crosshair-star shape with a size of about 20 μm was synthesized, in which a two-dimensional layered zeolitic imidazolate framework-L (ZIF-L) was used as a support to immobilize palladium nanoparticles via an assembly method. The hybrid catalyst with unique cushion-shaped cavities between layers with a size of 6.64 Å can be used for the diffusion of specific reactants not achievable by other ZIF systems such as ZIF-8. The crystal structure and morphology of Pd@ZIF-L are strongly dependent on the synthesis conditions. Palladium nanoparticles with an average size of 3 nm are homogeneously encapsulated in the ZIF-L crystals. The as-synthesized Pd@ZIF-L catalyst favors the conversion of alkenes with larger molecular sizes, and exhibits excellent molecule-size-selectivity and anti-leaching performance.

Original languageEnglish
Pages (from-to)220-227
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume221
DOIs
Publication statusPublished - 1 Feb 2016

Keywords

  • Alkene hydrogenation
  • Layered zeolitic imidazolate frameworks
  • Pd nanoparticles
  • Size-selective catalysis
  • Two-dimensional

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