Stabilization of fast pyrolysis liquids from biomass by catalytic hydrotreatment using Raney nickel 'type' catalysts
| Autor: | Robertus Hendrikus Venderbosch, Monique Bernardes Figueiredo, Hero J. Heeres, Shuqian Xia, Hanwen Gu, Wang Yin |
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| Přispěvatelé: | Chemical Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Chemistry
020209 energy General Chemical Engineering Oil refinery Energy Engineering and Power Technology Biomass Lignocellulosic biomass 02 engineering and technology Raney nickel Catalysis Autoclave chemistry.chemical_compound Fuel Technology 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Charring 0204 chemical engineering Pyrolysis Nuclear chemistry |
| Zdroj: | Fuel processing technology, 219:106846. ELSEVIER SCIENCE BV |
| ISSN: | 0378-3820 |
| Popis: | The catalytic hydrotreatment of fast pyrolysis liquids (PL) from lignocellulosic biomass is a promising technology to improve the properties of PL. Mild hydrotreatment (< 250 °C) using a suitable catalyst allows the production of stabilized oils that have for instance potential for co-processing in existing oil refinery units. Here, we report a catalyst screening study to stabilize PL by a mild hydrotreatment using five Raney nickel “type” catalysts (Ra-Ni), more specifically a benchmark Ra-Ni, two types of Fe/Cr promoted, and two Mo-promoted ones. Experiments were performed at relatively mild hydrotreatment conditions (200 °C, initial 140 bar H2 pressure, 4 h) in a batch autoclave. Among all the Ra-Ni catalysts, the Mo promoted (A-7063) showed the highest hydro-(deoxy)genation activity, a lower extent of repolymerization (GPC), and lower charring tendency of the product oil (TGA) compared to the promoter-free and Fe/Cr promoted Ra-Ni catalysts. Analyses of the product oils showed that the oils contain a significant amount of phenolics (7.4–15.4 wt% on oil, GC x GC-FID). These findings indicate that commercially available Raney nickel “type” catalysts, and particularly the Mo promoted ones, are attractive to be used for the mild hydrotreatment of pyrolysis liquids. |
| Databáze: | OpenAIRE |
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