Palladium phosphide nanoparticles as highly selective catalysts for the selective hydrogenation of acetylene

Yanan Liu, Alan J. McCue, Chenglin Miao, Junting Feng, Dianqing Li, James A. Anderson

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Pd3P and PdP2 phases of ca. 4 nm were prepared on a TiO2 support by an impregnation route. Data from the hydrogenation of acetylene under both non-competitive and competitive conditions showed that PdP2/TiO2 exhibits enhanced selectivity and stability relative to Pd3P. Furthermore, the selectivity produced over PdP2 (84% ethylene selectivity @ 100% acetylene conversion) compares favorably with recently reported materials. XPS and CO-IR measurements reveal that the incorporation of P helps to break up contiguous Pd sites. This in turn is thought to affect the adsorption and desorption of reactants/products and thus improves selectivity. This work reveals that the incorporation of P into Pd materials could be regarded as a promising approach to develop new and improved Pd-based catalyst by creating a means to control the nature of the active sites.
Original languageEnglish
Pages (from-to)406-414
Number of pages9
JournalJournal of Catalysis
Early online date23 Jun 2018
Publication statusPublished - Aug 2018



  • palladium phosphide
  • selective hydrogenation
  • alkyne
  • acetylene
  • ethylene
  • site-isolation

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