Direct selective hydrogenolysis of dibenzofuran (DBF) derived from coal and shale oil to a value-added chemical, ortho-phenylphenol (OPP), with high selectivity (80%) and yield (48%) has been achieved over Pt/MgO at 400 °C and 1.0 MPa by controlling the C–O bond cleavage as well as minimizing the extent of hydrogenation of aromatic rings. Meanwhile, Pt/SiO₂, Pt/Al₂O₃, and Pt/MgO/Al₂O₃ catalysts were used for the DBF hydrogenolysis and showed lower selectivity for OPP. The influence of reaction parameters has been studied to unveil the optimal reaction conditions. And the phenomenon of OPP dehydrogenation is found over various catalysts for the hydrogenation reaction of OPP. Extensive reactions and catalyst characterizations demonstrated that the OPP selectivity and the dehydrogenation of OPP to DBF follows the order of supports basicity: MgO-900 > MgO > SiO₂ > MgO/Al₂O₃ > Al₂O₃, which shows that the acid–base properties of supports impact the adsorption and desorption behaviors of DBF and OPP, and results in the disparity of OPP selectivity and the dehydrogenation of OPP. Finally, a plausible reaction pathway and mechanistic understanding are proposed.

中文翻译：

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高效Pt / MgO催化剂上二苯并呋喃的选择性加氢水解为邻苯基苯酚

由煤和页岩油得到的增值化学二苯并呋喃（DBF）的直接选择性氢解，邻-phenylphenol（OPP），以高选择性（80％）和产率（48％）已经在400已经实现在Pt / MgO的通过控制C–O键的裂解以及最大程度地减少芳环的氢化程度，可在°C和1.0 MPa的条件下进行。同时，Pt / SiO ₂，Pt / Al ₂ O ₃和Pt / MgO / Al ₂ O ₃催化剂用于DBF氢解反应，对OPP的选择性较低。已经研究了反应参数的影响以揭示最佳反应条件。并且在用于OPP加氢反应的各种催化剂上发现了OPP脱氢现象。大量反应和催化剂表征表明，OPP的选择性和OPP向DBF的脱氢遵循载体碱度的顺序：MgO-900> MgO> SiO ₂ > MgO / Al ₂ O ₃ > Al ₂ O ₃，这表明载体的酸碱性质影响DBF和OPP的吸附和解吸行为，并导致OPP选择性差异和OPP脱氢。最后，提出了一个合理的反应途径和机理理解。