A series of Na-doped Pt/Al₂O₃ catalysts with 0.2 wt% of Pt loading and 0–6 wt% Na loading was prepared to investigate the HCHO complete oxidation at room temperature. Powder XRD, BET and XPS were used to characterize the bulk structure and texture of catalysts, as well as the ratio of hydroxyl oxygen to lattice oxygen. A long-term catalyst stability test (50 h on reaction stream) was conducted under severe conditions of a large space velocity of 180,000 mL/h/g, a high HCHO concentration of 80 ppm and dry conditions (relative humidity of 0%). An appropriate amount of doped-Na (2 wt%) contributed to a remarkable improvement of activity and stability of the Na-doped 0.2 wt% Pt/Al₂O₃ catalyst.

制备了一系列的Na掺杂的Pt / Al ₂ O ₃催化剂，其中Pt负载量为0.2 wt％，Na负载量为0–6 wt％，以研究HCHO在室温下的完全氧化。粉末XRD，BET和XPS用于表征催化剂的整体结构和织构以及羟基氧与晶格氧的比例。在苛刻的条件下进行了长期催化剂稳定性测试（在反应物流上运行50小时），条件是：空速为180,000 mL / h / g，HCHO浓度为80 ppm，干燥条件为（相对湿度为0％）。适量的掺杂的Na（2重量％）有助于显着改善Na掺杂的0.2重量％的Pt / Al ₂ O ₃催化剂的活性和稳定性。