@inproceedings{repounp38733,
           title = {The Effect of Titanium Tetrahedral Coordination of Silica-Titania Catalyst on the Physical Properties of Biodiesel},
            year = {2017},
       booktitle = {The 2nd International Conference on Mathematics, Science, Education and Technology (ICMSET)},
           month = {October},
        keywords = {Silica-titania catalyst, Titanium tetrahedral coordination, Biodiesel, FTIR, DR UV-Vis, Transesterification},
             url = {https://repository.unp.ac.id/id/eprint/38733/},
          author = {U. K. Nizar, U. K. Nizar and J. Hidayatul, J. Hidayatul and R. Sundari, R. Sundari and B. Bahrizal, B. Bahrizal and A. Amran, A. Amran and A. Putra, A. Putra and L. Latisma Dj, L. Latisma Dj and I. Dewata, I. Dewata},
        abstract = {This study investigates the correlation of the number of titanium tetrahedral coordination and biodiesel production. The solid-state method has been used to synthesis of silica-titania catalyst for biodiesel production, which the precursors, i.e. silica and titania commercials were heated in the temperature range of 450 - 550oC. The characterization of the prepared silica-titania has been studied by FTIR and DR UV-Vis in order to identify and calculate the presence of titanium tetrahedral coordination in silica-titania catalyst. A very small peak at around 950 cm-1 indicated the presence of titanium tetrahedral coordination through Si-O-Ti bonds. Deconvolution of DR UV-Vis spectra showed the coordination of titanium in silica-titania is more octahedral. However, the number of titanium tetrahedral coordination of the prepared silica-titania is found higher than that of TiO2 commercial. The increasing of titanium tetrahedral fraction in silica-titania affects the physical properties of biodiesel in terms of boiling point, viscosity and density, which is produced by the reaction of methanol and palm oil.}
}