Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation

Frontiers of Chemical Science and Engineering, June 2013, Volume 7, Issue 2, pp 170-176
Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation
Aihua Kong, Yanyu Wei, Yonghong Li
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, China
National Engineering Research Center for Distillation Technology, School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, China
Abstract
Using urea hydrolysis, researchers created a high-performance Ni/ZnO adsorbent by homogeneous precipitation. The adsorbent was characterized by N₂ adsorption-desorption, X-ray diffraction (XRD), and scanning electron microscope (SEM). They used the adsorbent for the deep desulfurization of gasoline, demonstrating a high breakthrough sulfur capacity and a remarkably high volume hourly space velocity.
They studied the effects of coexisting olefins in gasoline as well as adsorptive conditions on adsorptive performance. They observed that olefins in gasoline had a slightly inhibiting effect on the desulfurization performance of the adsorbent. Under optimum conditions, ultralow sulfur gasoline could be produced and the breakthrough sulfur capacity of the adsorbent was 360 mg-s/g-sorb for the model gasoline.
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