Abstract
A method for preparing an oil extractor is provided. The method includes dissolving 0.1.about.30% by weight of a potassium sulfate, 0.1.about.30% by weight of a potassium persulfate, and 0.1.about.30% by weight of a manganese sulfate in a solvent to form a solution; heating the solution to synthesize a compound by a microwave; cooling a temperature of the compound to a room temperature; and removing the solvent from the compound. An extractor prepared from the method is also provided.