Pyrolysis of poplar wood sawdust by TG-FTIR and Py–GC/MS

Hydrogen production from pine and poplar bio-oils by catalytic steam reforming. Influence of the bio-oil composition on the process

“…The higher content of acetic acid and the lower amount of levoglucosan in the two poplar aqueous fractions compared to the two pine aqueous fractions do not fit the expected trends, considering the overall composition of pine and poplar reported in the literature [30,31]. These differences could be a consequence of a different composition in terms of cellulose, hemicellulose and lignin of the biomasses used in this work compared with the overall composition reported in the literature.…”

“…Pine biomass has an overall composition of 35 wt.% cellulose, 29 wt.% hemicellulose and 28 wt.% lignin [30], while poplar biomass has 45 wt.% cellulose, 17 wt.% hemicellulose and 31 wt.% lignin [31]. The pyrolysis of cellulose consists of an initial depolymerisation to anhydrosugars, followed by a pyranose ring-breaking to light oxygenated species such as aldehydes.…”

“…The pyrolysis of cellulose consists of an initial depolymerisation to anhydrosugars, followed by a pyranose ring-breaking to light oxygenated species such as aldehydes. The pyrolysis of hemicellulose [31] consists of depolymerisation, dehydratation to furan and pyran ring derivatives and then furanose and pyranose ring-breakage to light oxygenated species such as acetic acid, among others. The pyrolysis of lignin comprises an initial transformation into alkyl phenols and the posterior formation of phenols, substituted phenols and other small oxygenated species.…”

Structural Changes of Lignin after Ionic Liquid Pretreatment

“…8, the two samples began to decompose at <120 C, associated with the loss of water and small organic molecules. The second weight loss temperature region between 120 C and 500 C was due to carbohydrates in the lignin that decomposed into CO, CO2, and CH4 (Liu et al 2008;Wang et al 2009;Gu et al 2013). At this stage, the weight loss ratio showed differences to some degree, RL < ILL1 < ILL2.…”

White Poplar Microwave Pyrolysis: Heating Rate and Optimization of Biochar Yield

“…White poplar is a fast-growing plantation forest species that is widely planted along the middle and lower reaches of the Yellow River and the Yangtzi River. In addition to using it as an industrial material (Chen and Cheng 2014), white poplar wood and its residues could be used for bioenergy through thermochemical conversion processes such as gasification and pyrolysis (Gu et al 2013;Makibar et al 2015).…”