SYNTHESIS AND CHARACTERIZATION OF MONOCLINIC AND TETRAGONAL ZRO2 BY THERMAL DECOMPOSITION MOF TYPE UIO-66

• Main Author: Ariani, Hanna
• Format: Final Project
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/65027
• Institution: Institut Teknologi Bandung

One of the catalysts that is widely used in the chemical industry is heterogeneous catalyst, which has a different phase with the precursors and the products. Heterogeneous catalysts are known environmentally friendly, non-toxic, easier to handle, cheaper, and reuseable. One of heterogenous catalysts that is widely known is metal oxide (such as TiO2, ZnO, Fe2O3 and ZrO2). ZrO2 has high thermal stability and three different phases which have specific functional. Tetragonal phase of ZrO2 has better catalytic activity than the monoclinic phase for the dehydration reaction of 2-propanol. ZrO2 was synthesized by MOFs thermal decomposition for obtaining specific phase by controlling only calcination temperature and time. In this research, zirconium oxide (ZrO2) was synthesized and the change of phase was studied under controlled synthesis conditions. UiO-66 as the MOF material was used as a precursor to synthesize ZrO2 through thermal decomposition method in the air atmospheric. Variations in UiO-66 calcination temperature, heating rate and calcination time were carried out to determine the effect on the ZrO2 phase. ZrO2 with the highest percentage of tetragonal phase was obtained at calcination temperature of 500 °C, heating rate of 10 °C min-1, and calcination time of two hours, while monoclinic ZrO2 was obtained at calcination temperature of 800 °C, heating rate of 33 °C min-1 and calcination time of two hours. The faster heating rate, longer calcination time, and higher calcination temperature will lead to the formation of the monoclinic ZrO2.