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Glycerol Hydrogenolysis to 1,2-Propanediol over Novel $Cu/ZrO_{2}$ Catalysts
| Content Provider | MDPI |
|---|---|
| Author | Michela, Alfè Luciani, Giuseppina Ruoppolo, Giovanna Landi, Gianluca Gargiulo, Valentina Benedetto, Almerinda Di |
| Copyright Year | 2022 |
| Description | Glycerol is the main by-product of biodiesel production; its upgrading to more valuable products is a demanding issue. Hydrogenolysis to 1,2-propanediol is one of the most interesting processes among the possible upgrading routes. In this study, we propose novel copper/zirconia catalysts prepared by advanced preparation methods, including copper deposition via metal–organic framework (MOF) and support preparation via the sol–gel route. The catalysts were characterized by $N_{2}$ physisorption, X-ray diffraction, Scanning Electron Microscopy, $H_{2}$-TPR and $NH_{3}$-TPD analyses and tested in a commercial batch reactor. The catalyst prepared by copper deposition via MOF decomposition onto commercial zirconia showed the best catalytic performance, reaching 75% yield. The improved catalytic performance was assigned to a proper combination of redox and acid properties. In particular, a non-negligible fraction of cuprous oxide and of weak acid sites seems fundamental to preferentially activate the selective pathway. In particular, these features avoid the overhydrogenolysis of 1,2-propanediol to 1-propanol and enhance glycerol dehydration to hydroxyacetone and the successive hydrogenation of hydroxyacetone to 1,2-propanediol. |
| Starting Page | 72 |
| e-ISSN | 20734344 |
| DOI | 10.3390/catal12010072 |
| Journal | Catalysts |
| Issue Number | 1 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-10 |
| Access Restriction | Open |
| Subject Keyword | Catalysts Environmental Engineering Glycerol 1,2-propanediol Copper Zirconia Mof Mof-mediated Synthesis Route (mofms) Sol–gel Hydrogenolysis Biodiesel |
| Content Type | Text |
| Resource Type | Article |
