%X 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.
%D 2017
%K Silica-titania catalyst, Titanium tetrahedral coordination, Biodiesel, FTIR, DR UV-Vis, Transesterification
%L repounp38733
%A U. K. Nizar U. K. Nizar
%A J. Hidayatul J. Hidayatul
%A R. Sundari R. Sundari
%A B. Bahrizal B. Bahrizal
%A A. Amran A. Amran
%A A. Putra A. Putra
%A L. Latisma Dj L. Latisma Dj
%A I. Dewata I. Dewata
%T The Effect of Titanium Tetrahedral Coordination of Silica-Titania Catalyst on the Physical Properties of Biodiesel
%C Padang, West Sumatra, Indonesia