Mesoporosity-Enabled Selectivity of Mesoporous Palladium-Based Nanocrystals Catalysts in Semihydrogenation of Alkynes

Hao Lv, Huaiyu Qin, Mingzi Sun, Fengrui Jia, Bolong Huang, Ben Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

We reported mesoporosity engineering as a general strategy to promote semihydrogenation selectivity of palladium (Pd)-based nanobundles catalysts. The best mesoporous PdP displayed full conversion, remarkable activity, excellent selectivity, and high stability in semihydrogenation of 1-phenyl-1-propyne, all of which are remarkably better than commercial Lindlar catalysts. Mechanistic investigations ascribed high semihydrogenation selectivity to the continuous crystalline framework and penetrated mesoporous channel of catalysts that weakened the adsorption and interaction capacity of alkenes and thus inhibited over-hydrogenation of alkenes to industrially unfavorable alkanes. Density functional theory calculations further demonstrated that convex crystalline mesoporosity of nanobundles catalysts electronically optimized the coordination environment of Pd active sites and energetically changed hydrogenation trends, resulting in a superior semihydrogenation selectivity to targeted alkenes.

Original languageEnglish
Article numbere202114539
JournalAngewandte Chemie - International Edition
Volume61
Issue number8
DOIs
Publication statusPublished - 14 Feb 2022

Keywords

  • Catalytic Mechanism
  • Crystalline Framework
  • Mesoporosity
  • Mesoporous Metal
  • Semihydrogenation

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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