Bimetallic SnPt-nanoparticle (SnPt-NP) catalysts with several types of Sn_xPt_y alloy structures were prepared using a polyalcohol reduction process; the catalytic behavior of each Sn_xPt_y alloy phase toward the selective hydrogenation of unsaturated aldehydes to the corresponding unsaturated alcohols was elucidated. Atomic absorption spectroscopy (AAS) and transmission electron microscopy (TEM) indicate that SnPt-NP catalysts with various Sn/Pt atomic ratios can be successfully prepared by a polyalcohol reduction process using Pt(acac)₂ and Sn(AcO)₂ as the metal precursors. X-ray diffraction (XRD) results reveal that the Sn₁Pt₃, Sn₁Pt₁, and Sn₂Pt₁ alloy phases are formed through control of the Sn/Pt atomic ratio of the starting mixture during preparation. The Sn₁Pt₃ alloy phase enhanced the hydrogenation of both the CC and CO bonds during the selective hydrogenation of crotonaldehyde. When only Sn₁Pt₁ alloy phases (Sn/Pt = 1.40), accompanying with separated Sn phase, were formed in the SnPt-NP catalysts, the highest unsaturated alcohol (UOL) selectivity (71.5% at 37.6% conversion) was observed. The formation of the Sn₂Pt₁ alloy phase led to decreased UOL selectivity. We suggest that the Sn₁Pt₁ alloy phase is an effective bimetallic SnPt hydrogenation catalyst for the selective formation of unsaturated alcohols.

采用多元醇还原法制备了具有几种类型的Sn _x Pt _y合金结构的双金属SnPt-纳米颗粒（SnPt-NP）催化剂。阐明了每个Sn _x Pt _y合金相对不饱和醛选择性加氢为相应的不饱和醇的催化行为。原子吸收光谱法（AAS）和透射电子显微镜（TEM）表明，采用Pt（acac）₂和Sn（AcO）₂作为金属的多元醇还原工艺可以成功制备具有不同Sn / Pt原子比的SnPt-NP催化剂。前体。X射线衍射（XRD）结果表明，Sn ₁ Pt ₃，Sn通过控制制备过程中起始混合物的Sn / Pt原子比，形成₁ Pt ₁和Sn ₂ Pt ₁合金相。Sn ₁ Pt ₃合金相在巴豆醛的选择性加氢过程中增强了C C和C O键的加氢作用。当在SnPt-NP催化剂中仅形成Sn ₁ Pt ₁合金相（Sn / Pt = 1.40）并伴有分离的Sn相时，观察到最高的不饱和醇（UOL）选择性（在37.6％的转化率下为71.5％）。Sn ₂ Pt ₁合金相的形成导致UOL选择性降低。我们建议锡₁ Pt ₁合金相是一种有效的双金属SnPt加氢催化剂，用于选择性形成不饱和醇。