The effects of mineral salt catalysts on selectivity of phenolic compounds in bio-oil during microwave pyrolysis of peanut shell

被引：29
作者：
Mamaeva, Alisa [1 ]
Tahmasebi, Arash [1 ]
Yu, Jianglong [1 ,2 ]
机构：
[1] Univ Sci & Technol Liaoning, Sch Chem Engn, Key Lab Adv Coal & Coking Technol Liaoning Prov, Anshan 114051, Peoples R China
[2] Univ Newcastle, Chem Engn, Callaghan, NSW 2308, Australia
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2017年 / 34卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Biomass; Catalytic Pyrolysis; Microwave Irradiation; Phenolic Compounds; Alkali Catalysts; ASSISTED PYROLYSIS; LIGNOCELLULOSIC BIOMASS; ALGAL BIOMASS; FIXED-BED; BIOFUELS; CHAR; TEMPERATURE; CONVERSION; CELLULOSE; SAWDUST;
D O I：
10.1007/s11814-016-0291-3
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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 A degrees 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.
引用
收藏
页码：672 / 680
页数：9
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