@article{repounp38638,
         journal = {IOP Conference Series: Materials Science and Engineering},
          volume = {335},
           title = {The E?ect of Titanium Tetrahedral Coordination of Silica- Titania Catalyst on the Physical Properties of Biodiesel},
       publisher = {IOP Publishing Ltd},
           pages = {1--8},
             url = {https://iopscience.iop.org/article/10.1088/1757-899X/335/1/012036},
        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.},
          author = {Nizar, Umar Kalmar and Hidayatul, J. and Sundari, Putri Dwi and B. Bahrizal, B. and Amran, Ali and Putra, Amali and Latisma DJ, DJ and Dewata, Indang},
            issn = {Online: 1757-899X},
        keywords = {Silica-titania Catalyst, Titanium Tetrahedral Coordination, Biodiesel, Physical Properties, Solid-state Method}
}