Abstract: The alumina carriers were prepared by SB, ASIA and SRPA powders and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N₂ adsorption-desorption. The results showed that the dense packing density of SRR carrier prepared from SRPA powder was increased by about 21%, the proportion of holes between 6-10 nm in the aperture volume distribution was significantly increased, and the proportion of holes above 10 nm was significantly reduced compared with that of SRH carrier prepared by ASIA powder. A new generation of naphtha reforming catalyst SR-2000 was developed with SRR as carrier. The catalyst SR-2000 was characterized by pyridine adsorption IR, in situ CO-IR and scanning transmission electron microscopy (Cs-STEM). The results displayed that the amount of medium-strong and weak L acid on catalyst SR-2000 was higher than that on catalyst SR-1000, and there were a large number of single or double Pt atoms on catalyst SR-2000 besides a small number of Pt clusters. Both the evaluation of the laboratory equipment and the first commercial application exhibited that catalyst SR-2000 had excellent catalytic performance for naphtha reforming in fixed-bed reactor.

Key words: catalytic reforming, fixed-bed, catalyst, SR-2000, commercial application