Exploratory Catalyst Screening Studies on the Base Free Conversion of Glycerol to Lactic Acid and Glyceric Acid in Water Using Bimetallic Au–Pt Nanoparticles on Acidic Zeolites

R.K.P. Purushothaman, J. van Haveren, A. Mayoral, I. Melian-Cabrera, H.J. Heeres

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)

Abstract

The base free oxidation of glycerol with molecular oxygen in water using bimetallic Au-Pt catalysts on three different acidic zeolite supports (H-mordenite, H-beta and H-USY) was explored in a batch setup. At temperatures between 140 and 180 degrees C, lactic acid formation was significant and highest selectivity (60 % lactic acid at 80 % glycerol conversion) was obtained using Au-Pt/USY-600 (180 degrees C). A selectivity switch to glyceric acid (GLYA) was observed when the reactions were performed at 100 degrees C. Highest conversion and selectivity towards GLYA were obtained with Au-Pt/H-beta as the catalyst (68 % selectivity at 68 % conversion).
Original languageEnglish
Pages (from-to)1445-1453
JournalTopics in Catalysis
Volume57
Issue number17-20
DOIs
Publication statusPublished - 2014

Keywords

  • supported gold catalysts
  • free aqueous-solution
  • selective oxidation
  • phase oxidation
  • commodity chemicals
  • aerobic oxidation
  • carbon-monoxide
  • transformation
  • temperature
  • insight

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