Palladium sulphide – A highly selective catalyst for the gas phase hydrogenation of alkynes to alkenes

Alan J. McCue*, Antonio Guerrero-Ruiz, Inmaculada Rodríguez-Ramos, James A. Anderson

*Corresponding author for this work

Research output: Contribution to journalArticle

42 Citations (Scopus)
12 Downloads (Pure)

Abstract

A particular palladium sulphide phase (Pd4S) supported on carbon nanofibers is shown to be one of the most selective alkyne hydrogenation catalysts reported to date. Propyne and ethyne (in the absence of the corresponding alkene) can be converted in the gas phase to the corresponding alkene with 96% and 83% selectivity at 100% alkyne conversion. A bulk phase PdS powder (pre-reduced at 523 K) also demonstrated excellent performance (79% ethene selectivity). Other bulk phase metal sulphides (Ni2S3 and CuS) were tested and whilst the nickel analogue was found to be active/selective the performance was poorer than observed with either supported or unsupported Pd sulphide. Exceptional alkene selectivity extends to mixed alkyne/alkene feeds using the Pd4S/CNF catalyst – 86% and 95% alkene selectivity for C3 and C2 mixes, respectively. This report opens up exciting possibilities for using metal sulphides as highly selective hydrogenation catalysts.

Original languageEnglish
Pages (from-to)10-16
Number of pages7
JournalJournal of Catalysis
Volume340
Early online date28 May 2016
DOIs
Publication statusPublished - Aug 2016

Keywords

  • Alkene
  • Alkyne
  • Ethyne
  • Metal sulphide
  • Palladium sulphide
  • Propyne
  • Selective hydrogenation

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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