Selective hydrogenolysis of bioglycerol to 1,3-propanedilo (1,3-PDO) is regarded as a perfect combination of a valorization of biomass-derived glycerol and an increasing demand for 1,3-propanediol. In this work, SiO2 gel was impregnated by Al(NO3)3·9H2O followed by a calcination at a high temperature, and a strong interaction between SiO2 and Al2O3 led to a homogeneous dispersion of the Al2O3 on the surface of the substrate SiO2. The Al2O3-decorated SiO2 was used to load WOx and Pt sequentially and the resulting Pt–WOx/SiO2–Al2O3 catalysts were found a markedly enhanced surface acidity due to a strong interaction between the Al2O3-modified support and the WOx domain as well as the introduced ion exchange functionality by Al2O3 addition. A well-defined matching between the acidic and metallic sites was realized by turning the content of the Al2O3, and the glycerol conversion and 1,3-PDO selectivity were enhanced by a large margin on the optimized Pt–WOx/SiO2–Al2O3 catalyst. A markedly improved reactivity in bioglycerol hydrogenolysis was realized using the Pt–WOx catalysts supported over Al2O3-modified SiO2.

中文翻译：

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Al2O3 对 Pt-WOx/SiO2 催化剂在液相中生物甘油选择性氢解为 1,3-丙二醇的促进作用

生物甘油选择性氢解为 1,3-丙二醇 (1,3-PDO) 被认为是生物质衍生甘油的增值和对 1,3-丙二醇日益增长的需求的完美结合。在这项工作中，SiO2 凝胶被 Al(NO3)3·9H2O 浸渍，然后在高温下煅烧，SiO2 和 Al2O3 之间的强相互作用导致 Al2O3 在基材 SiO2 表面上的均匀分散。Al2O3 修饰的 SiO2 用于依次负载 WOx 和 Pt，由于 Al2O3 修饰的载体和 WOx 域之间的强相互作用以及所得到的 Pt-WOx/SiO2-Al2O3 催化剂的表面酸性显着增强。通过添加 Al2O3 引入离子交换功能。通过改变 Al2O3 的含量，实现了酸性位点和金属位点之间的明确匹配，在优化的 Pt-WOx/SiO2-Al2O3 催化剂上，甘油转化率和 1,3-PDO 选择性大幅提高。使用负载在 Al2O3 改性 SiO2 上的 Pt-WOx 催化剂实现了生物甘油氢解反应性的显着提高。