The spent 0.3TiO2/0.7SiO2 adsorbent was regenerated by the following steps: firstly, the spent adsorbent was washed with excess amount of acetonitrile and filtered, and then the solid was ramped to 400 °C at 1.5 °C/min. After that, the sample was kept at 400 °C for 4 h, and then tested in the next desulfurization cycle.