Modelling of citral hydrogenation kinetics on an Ni/Al2O3 catalyst

Lasse Pekka Tiainen*, Päivi Mäki-Arvela, Tapio Salmi

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)


The kinetics of citral hydrogenation in ethanol over an Ni/Al2O3 catalyst was studied in a slurry reactor operating at atmospheric pressure and at a temperature range of 60-77°C. Citronellal was the primary reaction product, whereas the amounts of unsaturated alcohols were very minor. Citronellol was the dominating product, generated mainly through the hydrogenation of the carbonyl group of citronellal. Based on the experimental data, a kinetic model was developed for hydrogenation. The model comprises competitive and rapid adsorption steps as well as rate-determining hydrogenation steps. The mass transfer limitation of hydrogen was included in the mathematical model. The kinetic parameters and the mass transfer parameter of hydrogen were estimated from the experimental data. A comparison of the model predictions with the experimental data revealed that the proposed kinetic approach gave a satisfactory reproduction of the data.

Original languageEnglish
Pages (from-to)57-63
Number of pages7
JournalCatalysis Today
Issue number1-4
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed


  • Citral hydrogenation
  • Kinetics
  • Ni/AlO catalyst


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