Novel in-situ preparation of nano sized Ni (0) catalyst for depolymerization of lignin-rich waste from industrial biorefinery
| Autor: | Cristian Gambarotti, Chiara Francesca Carrozza, Gabriella Leonardi, Michele Vasso, Cecilia Gelfi, Attilio Citterio, Roberto Sebastiano, Andrea Serafini |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Renewable Energy Sustainability and the Environment Depolymerization 020209 energy Bioengineering 02 engineering and technology 010501 environmental sciences Biorefinery 01 natural sciences Industrial waste Catalysis chemistry.chemical_compound chemistry Chemical engineering Biofuel Hydrogenolysis Yield (chemistry) 0202 electrical engineering electronic engineering information engineering Lignin Waste Management and Disposal 0105 earth and related environmental sciences |
| Popis: | Lignin-rich waste are valuable sources of chemicals and other materials but the depolymerisation processes are still unworkable on industrial scale. One of the problems ongoing is the catalyst preparation which often requires laborious and time-consuming processes. In this paper, a first example of easy preparation of in-situ Ni(0) nano sized catalyst for lignin-rich industrial waste hydrogenolysis is reported. Ni(0) particles were produced by reduction of Ni(II) acetate dissolved in alcoholic suspension of lignin. Soda lignin was isolated from the solid stream of a second generation bioethanol industrial plant and was depolymerized to low molecular weight chemicals by Ni(0) and/or Pd/C in alcoholic media. In 1,2-propandiol at 210 °C, up to 70% of starting material was converted into soluble compounds with an overall yield of monolignol derivatives of about 18%. The remaining material is constituted by lignin fragments with molecular weight between 400 and 1400 Da. The oligomers formation and distribution was discussed. |
| Databáze: | OpenAIRE |
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