title: Effects of chemical form of sodium on the product characteristics of alkali lignin pyrolysis.
abstract: The effects of Na as organic bound form or as inorganic salts form on the pyrolysis products characteristics of alkali lignin were investigated by using thermogravimetric analyzer coupled with Fourier transform infrared spectrometry (TG-FTIR), tube furnace and thermo-gravimetric analyzer (TGA). Results of TG-FTIR and tube furnace indicated that the two chemical forms Na reduced the releasing peak temperature of CO and phenols leading to the peak temperature of the maximum mass loss rate shifted to low temperature zone. Furthermore, organic bound Na obviously improved the elimination of alkyl substituent leading to the yields of phenol and guaiacol increased, while inorganic Na increased the elimination of phenolic hydroxyl groups promoting the formation of ethers. It was also found the two chemical forms Na had different effects on the gasification reactivity of chars. For inorganic Na, the char conversion decreased with increasing the char forming temperature, while organic bound Na was opposite.
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China.
authors.forename: Da-liang
authors.initials: DL
authors.lastname: Guo
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
authors.forename: Hong-you
authors.initials: HY
authors.lastname: Yuan
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China. Electronic address: xlyin@ms.giec.ac.cn.
authors.forename: Xiu-li
authors.initials: XL
authors.lastname: Yin
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China.
authors.forename: Chuang-zhi
authors.initials: CZ
authors.lastname: Wu
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
authors.forename: Shu-bin
authors.initials: SB
authors.lastname: Wu
authors.affiliation: The CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China.
authors.forename: Zhao-qiu
authors.initials: ZQ
authors.lastname: Zhou
mesh_terms: D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000032:analysis; D002384:Catalysis / Q000187:drug effects; D002606:Charcoal / Q000737:chemistry; D008031:Lignin / Q000378:metabolism*; D010636:Phenols / Q000378:metabolism; D012964:Sodium / Q000494:pharmacology*; D012972:Sodium Hydroxide / Q000494:pharmacology*; D013227:Steam; D013696:Temperature; D014835:Volatilization / Q000187:drug effects
chemical_list: D010636:Phenols; D013227:Steam; C540010:biochar; D002606:Charcoal; D012972:Sodium Hydroxide; D002244:Carbon; D008031:Lignin; D012964:Sodium
keywords: Alkali lignin; Chemical form; Gasification; Na; Pyrolysis