Study on Reactive Adsorption Desulfurization of Model Gasoline on Ni/ZnO-HY Adsorbent

The reactive adsorption desulfurization of model gasoline was carried out on Ni/ZnO-HY adsorbent. The Ni/ZnO-HY adsorbent was characterized by N2 adsorption-desorption test (BET), X-ray diffractometry (XRD), and tempera-ture-programmed reduction (TPR) analysis. The test results have demonstrated that HY-zeolite is a feasible support for Ni/ZnO components used in reactive adsorption desulfurization. The results of XRD and TPR analyses showed that most of nickel element was present as Ni2+species with only a small part existing as Ni3+species, and the Ni2+species had interac-tions with HY-zeolite. Under the conditions of this study, which speciifed a 50%ratio of HY-zeolite in the adsorbent, a Zn/Ni molar ratio of 10, and a reduction temperature of 400℃, the Ni/ZnO-HY adsorbent showed the best desulfurization per-formance. The sulfur capacity of Ni/ZnO-HY adsorbent could be recovered to 92.19%of the fresh one after being subjected to regeneration at 500℃, and could be maintained at 82.17%of the fresh one after 5 regeneration cycles.