Supported MoS₂ based materials are widely used as heterogeneous catalysts. In this work, we propose a rapid and facile method (ultrasound-induced impregnation assisted by microwave thermal treatment) to synthesize mesoporous silica (SBA-15)-supported, few-layer, ordered and K-promoted MoS₂ nanosheets with different K/Mo ratios. The prepared catalysts are characterized by various physical and chemical techniques. Their catalytic performance is evaluated by methyl mercaptan (CH₃SH) synthesis from CO/H₂/H₂S. The results show that our catalysts exhibit a much higher CO conversion and selectivity to CH₃SH than the catalysts prepared using the conventional impregnation and reported in the literature. The good performance arises because of two main factors: MoS₂ nanosheets of only 2–4 layers and K promotion. Experimental characterizations and (density functional theory) calculations show that the former is the typical nano-size effect, and the latter stabilizes CS bonds when activating COS molecules.

负载的基于MoS ₂的材料被广泛用作非均相催化剂。在这项工作中，我们提出了一种快速简便的方法（通过微波热处理辅助超声波诱导的浸渍）来合成介孔二氧化硅（SBA-15）支撑的，多层，有序和K促进的具有不同K /的MoS ₂纳米片。钼比率。所制备的催化剂通过各种物理和化学技术来表征。通过由CO / H ₂ / H ₂ S合成甲硫醇（CH ₃ SH）评估了它们的催化性能。结果表明，我们的催化剂表现出更高的CO转化率和对CH _3的选择性。SH比使用常规浸渍法制备的催化剂有文献报道。之所以产生良好的性能，是因为有两个主要因素：仅2–4层的MoS ₂纳米片和促进K含量。实验表征和（密度泛函理论）计算表明，前者是典型的纳米级效应，而后者在激活COS分子时可稳定C S键。