- Title
- The effects of mineral salt catalysts on selectivity of phenolic compounds in bio-oil during microwave pyrolysis of peanut shell
- Creator
- Mamaeva, Alisa; Tahmasebi, Arash; Yu, Jianglong
- Relation
- Korean Journal of Chemical Engineering Vol. 34, Issue 3, p. 672-680
- Publisher Link
- http://dx.doi.org/10.1007/s11814-016-0291-3
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2017
- Description
- Catalytic microwave pyrolysis of peanut shell (PT) using Fe3O4, Na2CO3, NaOH, and KOH for production of phenolic-rich bio-oil was investigated. The effects of catalyst type, pyrolysis temperature, and biomass/catalyst ratio on product distribution and composition were studied. Among four catalysts tested, Na2CO3 significantly increased the selectivity of phenolic compounds in bio-oil during microwave pyrolysis. The highest phenolics concentration of 57.36% (area) was obtained at 500 °C and PT:Na2CO3 ratio of 8: 1. The catalytic effect to produce phenolic compounds among all the catalysts tested can be summarized in the order Na2CO3>Fe3O4>KOH>NaOH. Using KOH and NaOH as catalyst resulted in formation of bio-oil with enhanced higher heating value (HHV) and lower oxygen content, indicating that these catalysts enhanced the deoxygenation of bio-oil. The scanning-electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) analysis of char particles showed the melting of magnetite and vaporizationcondensation of mineral salt catalysts on char particle, which was attributed to extremely high local temperatures during microwave heating.
- Subject
- biomass; catalytic pyrolysis; microwave irradiation; phenolic compounds; alkali catalysts
- Identifier
- http://hdl.handle.net/1959.13/1352717
- Identifier
- uon:30943
- Identifier
- ISSN:0256-1115
- Language
- eng
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