Hydrogenation of CO₂ into methanol using the H₂ produced from renewable energy is a promising way for carbon capture and utilization. Therefore, the methanol synthesis catalysts with high methanol selectivity are highly desired. In this work, we found that the methanol selectivity of In₂O₃ catalyst can be significantly enhanced by introducing a small amount of Pt. Methanol selectivity can be increased from 72.2% (In₂O₃) to 91.1% (0.58 wt.% Pt/In₂O₃) at 220℃. The introduced Pt atoms are doped into the In₂O₃, forming atomically dispersed Ptⁿ⁺ species, most of which are stable under working conditions. It is proposed that the atomically dispersed Ptⁿ⁺ species are responsible for the enhanced methanol selectivity, while Pt nanoparticles on In₂O₃ mainly boost the reverse water-gas shift reaction (CO₂+H₂→CO+H₂O).

使用可再生能源产生的H ₂将CO ₂加氢成甲醇是碳捕获和利用的有前途的方法。因此，非常需要具有高甲醇选择性的甲醇合成催化剂。在这项工作中，我们发现通过引入少量的Pt可以显着提高In ₂ O ₃催化剂的甲醇选择性。在220℃时，甲醇的选择性可以从72.2％（In ₂ O ₃）增加到91.1％（0.58 wt。％Pt / In ₂ O ₃）。引入的Pt原子被掺杂到In ₂ O _3中，形成原子分散的Pt ^{n +}种，其中大多数在工作条件下稳定。有人认为，原子分散的Pt ^{n +}物种是提高甲醇选择性的原因，而In ₂ O ₃上的Pt纳米颗粒则主要促进了逆水煤气变换反应（CO ₂ + H ₂ →CO + H ₂ O）。