Toward the preparation of industrial metal oxide catalysts, sacrificial organic templates, excessive solvents, complex impregnation, and drying steps are generally required. Here, we report a versatile rule for the simple synthesis of highly porous metal oxides with well-dispersed noble metal species. Porous metal oxides (Co₃O₄, Fe_xO_y, and Cr₂O₃) are obtained with some surface areas (e.g., Cr₂O₃: 224 m²·g⁻¹) beyond the record value. Surprisingly, small noble metal nanoparticles (e.g., Pd: 3.1 and Pt: 3.2 nm) could be incorporated by this solid-state process simultaneously. Corresponding Rh-Co₃O₄, Pd-Fe_xO_y, and Pt-Cr₂O₃ exhibit excellent performance: CH₄ combustion (T₉₀ = ∼360°C and thermal stability: >100 h at 680°C), hydrogenation of nitrobenzene and derivatives (turnover number [TON] = 2.49 × 10⁴, 300 mmol per run), and reversed water gas shift (RWGS) reaction (44% CO₂ conversion with ∼98% CO selectivity and thermal stability: >100 h at 500°C), respectively. Therefore, current principle via a NaCl-based solid solution could provide a solid-state, fast, and efficient route for processing metal oxide catalysts.

为了制备工业金属氧化物催化剂，通常需要牺牲性有机模板，过量的溶剂，复杂的浸渍和干燥步骤。在这里，我们报告了一种通用规则，用于简单地合成具有良好分散的贵金属物质的高度多孔的金属氧化物。获得具有某些表面积（例如Cr ₂ O ₃：224 m ² ·g ^-1）的多孔金属氧化物（Co ₃ O ₄，Fe _x O _y和Cr ₂ O ₃）。）超出记录值。出人意料的是，小的贵金属纳米颗粒（例如，Pd：3.1和Pt：3.2nm）可以通过该固态工艺同时被结合。相应的Rh-Co ₃ O ₄，Pd-Fe _x O _y和Pt-Cr ₂ O ₃表现出出色的性能：CH ₄燃烧（T ₉₀  =〜360°C，热稳定性：在680°C时> 100 h），硝基苯及其衍生物的氢化（周转数[TON] = 2.49×10 ⁴，每次运行300 mmol），以及反向水煤气变换（RWGS）反应（44％CO ₂转化率约为98％的CO选择性和热稳定性：在500°C时> 100小时）。因此，通过基于NaCl的固溶体的当前原理可以提供用于处理金属氧化物催化剂的固态，快速且有效的途径。