Effect of Catalyst Preparation on the Selective Hydrogenation of Vegetable Oil Over Low Percentage Pd/Diatomite Catalysts

Authors

  • K. Toshtay Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan; School of chemical engineering, Kazakh-British Technical University, Tole bi str. 59, Almaty, Kazakhstan
  • A. B. Auyezov Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan; School of chemical engineering, Kazakh-British Technical University, Tole bi str. 59, Almaty, Kazakhstan
  • Zh. A. Bizhanov Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan
  • A. T. Yeraliyeva Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan
  • S. K. Toktasinov Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan
  • B. Kudaibergen Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan
  • A. Nurakyshev Scientific Technology Park, Al-Farabi Kazakh National University, Al-Farabi av. 71, Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj192

Abstract

Hydrogenated vegetable oils contain high contents of trans-fatty acids. Because of the increased health concern about trans-fatty acids, new hydrogenations have been studied to seek ways for substantial reduction of the trans-fatty acids in the hydrogenated products. In this research, activated diatomite has distinctive properties as a support for hydrogenation catalysts. Investigation of textural properties of raw and purified diatomite samples reveals that during acid activation surface area increases significantly. Although, acid activation of diatomite is a commonly chemical modification to enhance its adsorption capacity. We are preparing adsorption method to synthesize low percentage 0.2% of Pd/Diatomite catalyst. The activated diatomite and the obtained catalyst was characterized by using thermogravimetric analysis (TGA), Brunauer-Emmett-Teller surface area analysis (BET), scanning electron microscopy (SEM-EDAX), transmission electron microscopy (TEM). It was utilized for hydrogenation of sunflower oil using the Parr reactor in laboratory testing a variety of temperature (70, 90, 110 ºC) and canola oil in industrial testing, at temperature 90 ºC and 0.5 MPa pressure and compared to commercial nickel catalyst (Pricat-9910) at 150 ºC, 0.5 MPa pressure agitation of 800 rpm for 160 min. The changes in iodine value, fatty acid composition, trans-fatty acids, melting point and solid fat content were investigated on partial hydrogenated sunflower oil and canola oil. The experimentally obtained results show that the palladium catalyst is the most active compared to the commercial catalyst. Lower hydrogenation temperature used 0.2% Pd/Diatomite catalyst, significant reducing the formation of trans-content by 13% in fat.

 

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Published

2015-01-20

How to Cite

Toshtay, K., Auyezov, A. B., Bizhanov, Z. A., Yeraliyeva, A. T., Toktasinov, S. K., Kudaibergen, B., & Nurakyshev, A. (2015). Effect of Catalyst Preparation on the Selective Hydrogenation of Vegetable Oil Over Low Percentage Pd/Diatomite Catalysts. Eurasian Chemico-Technological Journal, 17(1), 33–39. https://doi.org/10.18321/ectj192

Issue

Vol. 17 No. 1 (2015)

Section

Articles

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