以PVP为稳定剂,乙醇和KBH4为还原剂制备了Au-Pd/TiO2-Al2O3催化剂,考察了还原剂对Au-Pd负载型双金属催化剂加氢脱硫性能的影响,并运用XRD,TPD,TPR等技术对催化剂进行表征.结果表明,以乙醇还原的Au-Pd/TiO2-Al2O3催化剂的加氢脱硫活性较好.乙醇还原的Au-Pd/TiO2-Al2O3催化剂中Au-Pd之间及活性组分与载体之间的相互作用较强,形成AuxPdy合金的晶粒较小,活性组分的分散度和活性表面积较大,反应活化能较低,这些均有利于催化剂活性的提高.
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