The Effect of Titanium Tetrahedral Coordination of Silica-Titania Catalyst on the Physical Properties of Biodiesel

2nd International Conference on Mathematics, Science, Education and Technology

数学;自然科学;教育

Nizar, U.K.^1 ; Hidayatul, J.^1 ; Sundari, R.^2 ; Bahrizal, B.^1 ; Amran, A.^1 ; Putra, A.^1 ; Latisma Dj, L.^1 ; Dewata, I.^1

Department of Chemistry, Universitas Negeri Padang, Jl. Prof. Hamka, Air Tawar, Padang-West-Sumatera, Indonesia^1

Departement of Mechanical Engineering, University of Mercu Buana, Jakarta, Indonesia^2

关键词: Biodiesel production;    DR-UV-vis;    Silica-titania;    Solid state method;    Temperature range;    Tetrahedral coordination;    Tetrahedral fractions;    Titania;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/335/1/012036/pdf
DOI  :  10.1088/1757-899X/335/1/012036

来源: IOP

【 摘 要 】

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-1indicated 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 TiO2commercial. 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.