Ultrasonic (US) irradiation of thiophene (T), benzothiophene (BT) or dibenzothiophene (DBT) dissolved in a water-methanol mixture, and in the presence of Ni/Al or Ni/Zn catalysts at 333 K and autogenous pressure, was used to produce desufurization of the aforementioned compounds. The system could be effective for T desufurization, and BT and DBT desufurization can also be produced, but to a lesser extent. The role of ultrasonic (US) irradiation is to increase reaction rate, and to change the catalysts' morphology producing a cleaner surface and smaller particle size, which increases catalyst activity and effectiveness.
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