TY - JOUR SP - 1 PB - IOP Publishing Ltd AV - public VL - 335 ID - repounp38638 KW - Silica-titania Catalyst KW - Titanium Tetrahedral Coordination KW - Biodiesel KW - Physical Properties KW - Solid-state Method TI - The E?ect of Titanium Tetrahedral Coordination of Silica- Titania Catalyst on the Physical Properties of Biodiesel N2 - 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 - 550°C. 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. EP - 8 UR - https://iopscience.iop.org/article/10.1088/1757-899X/335/1/012036 JF - IOP Conference Series: Materials Science and Engineering A1 - Nizar, Umar Kalmar A1 - Hidayatul, J. A1 - Sundari, Putri Dwi A1 - B. Bahrizal, B. A1 - Amran, Ali A1 - Putra, Amali A1 - Latisma DJ, DJ A1 - Dewata, Indang SN - Online: 1757-899X ER -