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 COIR 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.
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