title: Thermogravimetric analysis of lignocellulosic biomass with ionic liquid pretreatment.
abstract: Thermogravimetry (TG) was employed to understand the interactions between ionic liquids (ILs) and biomass components. The thermal decomposition profiles of several biomass samples with IL pretreatment at different temperatures were studied by TG. Samples of Avicel (PH101), xylan from beechwood and alkaline lignin as well as switchgrass and corn stover were pretreated using 1-butyl-3-methylimidazolium acetate ([C4mim][OAc]) at temperatures of 50-130°C for 6h. Analysis of TG data provided insight into the mode of degradation of xylan and lignin in [C4mim][OAc]. Pretreated Avicel samples exhibited higher decomposition temperatures due to transformation from cellulose I into cellulose II, while samples of switchgrass and corn stover showed an improved thermal stability as a result of removal of minerals by [C4mim][OAc]. More intensive pretreatment produced decreased thermal resistance due to degradation of biomass components and decrystallization.
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Jiafu
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Feng
authors.affiliation: Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Wang
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China; Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA.
authors.forename: Ruihong
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: guangqing.liu@gmail.com.
authors.forename: Guangqing
authors.initials: G
authors.lastname: Liu
authors.affiliation: Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address: chenggang@mail.buct.edu.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Cheng
mesh_terms: D018533:Biomass; D002482:Cellulose / Q000378:metabolism; D007093:Imidazoles / Q000494:pharmacology; D052578:Ionic Liquids / Q000494:pharmacology*; D008031:Lignin / Q000032:analysis* / Q000378:metabolism; D008897:Panicum / Q000737:chemistry / Q000187:drug effects; D013818:Thermogravimetry / Q000379:methods*; D014990:Xylans / Q000378:metabolism; D003313:Zea mays / Q000737:chemistry / Q000187:drug effects
chemical_list: C525963:1-butyl-3-methylimidazolium; D007093:Imidazoles; D052578:Ionic Liquids; D014990:Xylans; C036909:lignocellulose; D002482:Cellulose; D008031:Lignin
keywords: Biomass; Ionic liquid pretreatment; TGA