Design and fabrication of highly efficient Au-based catalysts using simple impregnation method have been long sought-after. Herein, we report an efficient strategy to impregnate Au species onto uncalcined TS-1 using a sulphur-containing gold precursor, i.e., sodium dithiosulfatoaurate, for propylene epoxidation with H₂ and O₂ to produce propylene oxide (PO). Such catalyst delivers superior activity than the referenced catalyst prepared by impregnation using (sodium) aurichloride precursor and the catalyst prepared by deposition-precipitant urea (DPU) method. The catalyst structure-performance relationship is established by using multiple microscopy and spectroscopy techniques. The sulphur species contained in the Au precursor can serve as protecting-ligands, thus facilitating the formation of highly dispersed Au species on uncalcined TS-1. This finding may also provide a way for the preparation of highly efficient impregnated Au-based catalysts for other reactions.

使用简单的浸渍方法设计和制造高效的金基催化剂长期以来一直受到追捧。在此，我们报道了一种使用含硫金前体（即二硫代硫酸金钠）将 Au 浸渍到未煅烧 TS-1 上的有效策略，用于用 H ₂和 O _{2进行丙烯环氧化}生产环氧丙烷（PO）。这种催化剂比通过使用（钠）氯化物前体浸渍制备的参考催化剂和通过沉积-沉淀尿素（DPU）方法制备的催化剂具有更高的活性。通过使用多种显微镜和光谱技术建立了催化剂的结构-性能关系。Au 前体中所含的硫物质可以作为保护配体，从而促进在未煅烧的 TS-1 上形成高度分散的 Au 物质。这一发现也可能为制备用于其他反应的高效浸渍金基催化剂提供一种方法。