Xylose hydrogenation: Kinetic and NMR studies of the reaction mechanisms

Jyri Pekka Mikkola, Rainer Sjöholm, Tapio Salmi*, Päivi Mäki-Arvela

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)

Abstract

Hydrogenation of xylose over Raney nickel was studied in a batch reactor. A pseudo-homogeneous kinetic model was able to prognose the xylose and xylitol concentrations rather well. The obtained fit for the activation energies suggests that external diffusion limitations are absent in our experimental conditions. The sugar equilibria studies gave new information about the temperature dependence of the α-β-pyranose equilibria. It was found that the equilibria in D2O follows an S-shaped curve, the equilibria being shifted towards the α-form at higher temperatures.

Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalCatalysis Today
Volume48
Issue number1-4
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Keywords

  • Catalytic hydrogenation
  • Monosaccharide
  • Raney nickel
  • Xylitol
  • Xylose

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