Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 4, Issue 8, Pages 4305-4313Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b00825
Keywords
Lignin; Microwave; Depolymerization; Zeolite; Nickel oxide
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Funding
- COST Action (under a STSM of Jelena Milovanovic at Universidad de Cordoba) [FP1306]
- BRISK- Biofuels Research Infrastructure for Sharing Knowledge
- Ministry of Education, Science and Technological Development of the Republic of Serbia [172018]
- Norwegian Research Council
- Consejeria de Ciencia e Innovacion, Junta de Andalucia [P10 FQM 6711]
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The depolymerization of biolignin (BL), eucalyptus (EL), and hardwood lignins (HL) to simple aromatics was studied by a microwave assisted approach using NiO/H-ZSM-S zeolites as catalysts. The catalysts prepared by the mechanochemical dry milling (MCDM) method contained bunsenite nano NiO particles with an average size of 67 mu m at a concentration of 1-4.8 wt % NiO. Yields and composition of the obtained bio-oils are highly dependent on lignin type as well as on the content of NiO. The highest bio-oil yield (about 20 wt %) was obtained using 3.5 wt % NiO and HL as the feedstock. A number of relevant findings based depolymerization experiments are provided which pointed to different monomeric products (mostly S-derived) that could be produced in different proportions depending on the source of investigated lignin and content of the NiO at H-ZSM-5.
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