A sulfur K-edge XANES study on the transfer of sulfur species in the reactive adsorption desulfurization of diesel oil over Ni/ZnO

Reactive adsorption desulfurization (RAIDS) of diesel oil was conducted over a Ni/ZnO adsorbent; the transfer of sulfur species in the RAIDS process was investigated by the sulfur K-edge X-ray absorption near-edge structure (XANES) and X-ray diffraction (XRD). The results indicted that the organic sulfur compounds in the diesel oil are first decomposed on surface Ni of Ni/ZnO to form Ni3S2, followed by the reduction of Ni3S2 to form H2S, and then H2S is stored in the adsorbent accompanied by the conversion of ZnO into ZnS. (C) 2010 Elsevier B.V. All rights reserved.