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为了不使用任何还原剂而获得聚合物固载高分散零价双金属加氢催化剂，利用金属蒸气法制备了３种不同Ｐｄ／Ｃｕ质量比的聚合物固载双金属原子簇。透射电镜（ＴＥＭ）和Ｘ衍射（ＸＲＤ）测定表明，Ｐｄ－Ｃｕ原子簇粒度很小，平均直径小于３．０ｎｍ。Ｘ射线光电子能谱（ＸＰＳ）表明，Ｐｄ和Ｃｕ均为零价态。Ｐｄ－Ｃｕ原子簇在异丙叉加氢反应中具有很高的活性和选择性。这些结果提供了令人信服的证据，即金属蒸气法可用于在聚合物孔穴内直接而温和地置入小的零价金属原子簇，而且这样制备的聚合物固载金属原子簇很适合于催化应用。
In order to obtain a polymer-supported high-dispersion zero-valent bimetallic hydrogenation catalyst without using any reductant, three kinds of polymer-supported bimetal clusters with different Pd / Cu mass ratios were prepared by a metal vapor method. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) measurements showed that the particle size of Pd-Cu clusters was very small with an average diameter of less than 3.0 nm. X-ray photoelectron spectroscopy (XPS) showed that both Pd and Cu are zero valence states. Pd-Cu clusters have a high activity and selectivity in the hydrogenation of isopropylidene. These results provide convincing evidence that the metal vapor method can be used to directly and gently place small clusters of zero-valent metal atoms within the polymer pores, and the polymer-supported metal clusters thus prepared are well suited for catalytic application.