Hydrodeoxygenation of phenol on bifunctional Ni-based catalysts: Effects of Mo promotion and support
Hydrodeoxygenation (HDO) of phenol dissolved in decalin was studied over H-activated Ni and Mo-Ni catalysts supported on alumina and amorphous silica alumina (ASA) in the context of the O-removal from bio-liquids. The activity test was carried out in a flow reactor at 310 °C and total hydrogen press...
| Authors: | , , , , |
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| Format: | article |
| Status: | Versión aceptada para publicación |
| Publication Date: | 2018 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/231598 |
| Online Access: | http://hdl.handle.net/10261/231598 |
| Access Level: | Open access |
| Keyword: | Phenol hydrodeoxygenation Ni Catalyst Mo Promoter Alumina Amorphous silica-alumina |
| Summary: | Hydrodeoxygenation (HDO) of phenol dissolved in decalin was studied over H-activated Ni and Mo-Ni catalysts supported on alumina and amorphous silica alumina (ASA) in the context of the O-removal from bio-liquids. The activity test was carried out in a flow reactor at 310 °C and total hydrogen pressure of 3 MPa. The catalyst samples were characterized by several physico-chemical techniques (S, H-TPR, HRTEM, DRIFT spectroscopy of adsorbed CO and NH, Raman spectroscopy, XPS, SEM-EDS and HRTEM) in order to obtain catalyst activity-structure correlation. After 4 h on stream, the Mo-Ni/ASA catalyst displayed the highest activity in the HDO of phenol, which was linked with its highest Ni dispersion, the Mo promoting action and largest acidity. The Mo-Ni/ASA catalyst displayed 2 times higher yield of O-free products than a commercial NiMoP(S)/AlO catalyst activated by sulfidation. The role of metals and metal oxides species in HDO reaction has been discussed. |
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