Hydrogenolysis of Glycerol on the ZrO2-TiO2 Supported Pt-WOx Catalyst

Catalysts

Wenzhi Jia¹  Junhui Li²  Zhiwen Xi³  Zhe Hong³  Fangtao Huang³  Zhirong Zhu³ 

[1] Department of Materials Engineering, Huzhou University, Huzhou 313000, China;School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China;Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China;

关键词: hydrogenolysis of glycerol;    1,3-propanediol;    1-propanediol;    pt-wo_x;    zro₂-tio₂;   

DOI  :  10.3390/catal10030312

来源: DOAJ

【 摘 要 】

A series of Pt/WOx-ZrO₂-TiO₂ catalysts with different Ti/Zr molar ratios was prepared by an evaporation induced self-assembly method, and used to efficient hydrogenolysis of glycerol to 1-PO and 1,3-PDO. BET, XRD, Raman, TEM, XPS and Py-IR were employed to characterize the physicochemical properties of the catalysts. The structural and acidic properties of the catalysts were affected by the Ti/Zr ratio of the support ZrO₂-TiO₂. Two new crystalline phases of ZrTiO₄ and Ti₂ZrO₆ and the amount of acid sites were detected in the Pt/WOx-ZrO₂-TiO₂ catalysts. 1-PO is dominant in all products of glycerol hydrogenolysis over the supported Pt-WOx catalysts, which is attributed to more Lewis acid sites on the catalyst surface. The Pt/WOx-ZrO₂-TiO₂ catalyst with a Ti/Zr ratio of 7/3 showed the highest 1,3-PDO yield (25.3%) and 1-PO yield (42.3%), due to its more acid sites including Brønsted and Lewis, and higher concentration of surface Pt⁰.

【 授权许可】

Unknown