Study of potassium-supported TiO 2 catalysts for the production of biodiesel

Daniela Salinas, Paulo Araya, Sichem Guerrero*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


A hydrotreated TiO 2 supported potassium catalyst, K/TiHT, was studied on the transesterification reaction of canola oil for the production of biodiesel. It was found that the calcination at different temperatures led to the transformation of the supported potassium catalyst into a titanate form of oxide. This was accompanied by a substantial increase in activity. Leaching studies found that although some potassium and titania was left in the products, the reaction mainly occurred in heterogeneous conditions. The contribution of the leached components to the activity was only minor. The recovered catalyst was then used in successive reactions producing stable conversions. A maximum conversion was achieved with the catalyst calcined at 700°C. Optimum reaction conditions were obtained when using a catalyst loading of 6% (w/w), a methanol to oil ratio of 54:1, and a temperature of reaction of 55°C.

Original languageEnglish
Pages (from-to)260-267
Number of pages8
JournalApplied Catalysis B: Environmental
StatePublished - 18 May 2012
Externally publishedYes

Bibliographical note

Funding Information:
The fellowship AT-24100012 from the National Commission for Science and Technology of Chile (CONOCYT) is gratefully acknowledged.


  • Biodiesel
  • Canola oil
  • Heterogeneous transesterification
  • Potassium
  • TiO


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