Bimetallic gold based catalysts have been prepared using a sol immobilisation technique. Despite a very similar metal dispersion, different structures are revealed depending on the second metal, with alloyed systems being preferred in the case of Pd, Pt and Cu, and core–shell in the case of Ru. A positive synergistic effect between the metals has been revealed only in the cases of Pd and Cu in the oxidation of benzyl alcohol. AuPd/C has been also studied in the hydrogenation of benzaldehyde where the bimetallic catalyst revealed a different selectivity compared to the monometallic counterpart.

中文翻译：

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金作为金属纳米粒子的改性剂：对结构和催化作用的影响

已经使用溶胶固定技术制备了双金属金基催化剂。尽管金属的分散性非常相似，但根据第二种金属显示的结构却有所不同，对于Pd，Pt和Cu，优选合金体系，而对于Ru，则优选核壳结构。仅在苯甲醇氧化中的Pd和Cu情况下，才显示出金属之间的正协同作用。还已经在苯甲醛的氢化中研究了AuPd / C，其中双金属催化剂与单金属催化剂相比具有不同的选择性。