Size effect of the active sites in UiO-66-supported nickel catalysts synthesized: Via atomic layer deposition for ethylene hydrogenation

Zhanyong Li, Aaron W. Peters, Jian Liu, Xuan Zhang, Neil M. Schweitzer, Joseph T. Hupp*, Omar K. Farha

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Ni(ii) ions have been deposited on the Zr6 nodes of a metal-organic framework (MOF), UiO-66, via an ALD-like process (ALD = atomic layer deposition). By varying the number of ALD cycles, three Ni-decorated UiO-66 materials were synthesized. A suite of physical methods has been used to characterize these materials, indicating structural and high-surface-area features of the parent MOF are retained. Elemental analysis via X-ray photoelectron spectroscopy (XPS) indicates that the anchored Ni ions are mainly on surface and near-surface MOF defect sites. Upon activation, all three materials are catalytic for ethylene hydrogenation, but their catalytic activities significantly vary, with the largest clusters displaying the highest per-nickel-atom activity. The study highlights the ease and effectiveness of ALD in MOFs (AIM) for synthesizing, specifically, UiO-66-supported NiyOx catalysts.

Original languageEnglish (US)
Pages (from-to)820-824
Number of pages5
JournalInorganic Chemistry Frontiers
Volume4
Issue number5
DOIs
StatePublished - May 2017

ASJC Scopus subject areas

  • Inorganic Chemistry

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