Deactivation behavior of a TiO2-added Pd catalyst in acetylene hydrogenation

Woo Jae Kim, Jung Hwa Kang, In Young Ahn, Sang Heup Moon

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

The deactivation behavior of a TiO2-added Pd catalyst, reduced at 773 K, for the selective hydrogenation of acetylene showed that the added TiO2 suppressed the formation of green oil and, consequently, improved the lifetime of the catalyst. The average number of carbon atoms per green oil molecule was smaller for the TiO2-added catalyst than for the Pd-only catalyst because multiply coordinated Pd sites were suppressed on the TiO2-added catalyst. The added TiO2 also retarded the sintering of Pd particles during catalyst regeneration, presumably due to the anchoring effect of TiO2, and suppressed green oil formation, even after the regeneration step.

Original languageEnglish
Pages (from-to)226-229
Number of pages4
JournalJournal of Catalysis
Volume226
Issue number1
DOIs
StatePublished - 15 Aug 2004

Keywords

  • Acetylene hydrogenation
  • Deactivation
  • Green oil
  • Pd
  • Sintering
  • TiO

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