This document describes three methods for synthesizing calcium titanate (CaTiO3): the coprecipitation method, solid state reaction method, and hydrothermal reaction method. The coprecipitation method involves dissolving calcium carbonate and titanium chloride in solution, then adding oxalic acid to precipitate calcium titanyl oxalate hexahydrate. This precursor is then decomposed through heating to produce CaTiO3. The solid state reaction method directly combines calcium oxide and titanium oxide in a furnace to form CaTiO3. The hydrothermal reaction uses titanium chloride, calcium chloride dihydrate, and potassium hydroxide in an autoclave to produce CaTiO3 under high temperature and pressure conditions