Aleksandra Zarubica

Boban Spalovic

Marija Vasic

Milos Marinkovic

Nikola Stojkovic

Radomir Ljupkovic

Sofija Rancic

Hemijska Industrija

Heterogeneous catalysis is in recent focus of research for biodiesel
   production from vegetable oils because of advantages such as easy separation
   and reuse of catalysts, although homogeneous catalysis is most commonly used
   method. The aim of this study was preparation of ?-Al2O3 support by modified
   sol-gel procedure, synthesis of the KI/Al2O3 catalyst and testing its
   activity in the transesterification of sunflower oil with methanol.
   Influences of different process parameters on conversion of sunflower oil to
   methyl esters were examined. The gained results implicate that the potassium
   iodide incorporation into/onto the structure of ?-Al2O3 significantly
   influences textural and structural properties of the catalyst. Additionally,
   the catalyst basic strength is increased and all together those properties
   are positively affecting the activity of the catalyst in the reaction of
   transesterification of sunflower oil with methanol. The impregnation of
   alumina with potassium iodide resulted in the additional formation of basic
   catalytically active sites. The surface properties of the catalyst have an
   essential impact on its catalytic performance. Under relatively mild process
   conditions and relatively short reaction time, the usage of the KI/Al2O3
   catalyst resulted in very high conversion to fatty acids methyl esters (i.e.
   99.99 %).</jats:p

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Hemijska industrija

Synthesis of biodiesel from sunflower oil over potassium loaded alumina as heterogeneous catalyst: The effect of process parameters

Synthesis of biodiesel from sunflower oil over potassium loaded alumina as heterogeneous catalyst: The effect of process parameters

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