Pt-WO_x based catalysts were widely investigated and showed high industrial application potential for glycerol hydrogenolysis. Further improving the catalytic activity and stability of the Pt-WO_x based catalysts is important. Herein, we modified the TiO₂ supported Pt-WO_x catalyst with sulfate doping and employed for the glycerol hydrogenolysis. The introduction of sulfates dramatically promoted the catalytic activity and stability of the Pt/W/Ti catalyst in glycerol hydrogenolysis. Sulfates-doped Pt/W−S/Ti achieved 100 % conversion of glycerol, with 36 % selectivity to 1,3-PDO and 57 % selectivity to n-PO at 120 °C and 4 MPa, while the conversion over Pt/W/Ti only reached 57 %. Moreover, Pt/W−S/Ti offered 22.5 times more glycerol conversion (90 %) than Pt/W/Ti (4 %) for the second run. The much higher activity of the Pt/W−S/Ti was ascribed to the better dispersion of Pt and WO_x species and more Brønsted acid amount. The enhanced stability of Pt/W−S/Ti was attributed to its strong anti-leaching ability after sulfate doping.

中文翻译：

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硫酸盐对 TiO2 负载 Pt-WOx 催化甘油氢解的促进作用

Pt-WO _x基催化剂被广泛研究并显示出甘油氢解的高工业应用潜力。进一步提高基于Pt-WO _x的催化剂的催化活性和稳定性很重要。在此，我们修改了 TiO ₂负载的 Pt-WO _x掺杂硫酸盐的催化剂，用于甘油氢解。硫酸盐的引入显着提高了 Pt/W/Ti 催化剂在甘油氢解中的催化活性和稳定性。在 120 °C 和 4 MPa 条件下，硫酸盐掺杂的 Pt/W-S/Ti 实现了 100% 的甘油转化率，对 1,3-PDO 的选择性为 36%，对 n-PO 的选择性为 57%，而转化率超过 Pt/W /Ti 仅达到 57%。此外，在第二次运行中，Pt/W-S/Ti 提供的甘油转化率 (90%) 是 Pt/W/Ti (4%) 的 22.5 倍。Pt/W-S/Ti 更高的活性归因于 Pt 和 WO _x物质的更好分散以及更多的布朗斯台德酸量。Pt/W-S/Ti 稳定性的增强归因于硫酸盐掺杂后其强大的抗浸出能力。