Catalytic pyrolysis of cellulose with sulfated metal oxides: A promising method for obtaining high yield of light furan compounds

Lü, Qiang; Xiong, Wan-Ming; Li, Wenzhi; Guo, Qi; Zhu, Xun

doi:10.1016/j.biortech.2009.04.068

Cited by 185 publications

(89 citation statements)

References 24 publications

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“…Levoglucosan is known to be produced by depolymerization during the non-catalytic pyrolysis of cellulose. 25 This levoglucosan is converted into other species when it passes …”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the enhanced yield of furans is economically beneficial. 18,25 When the catalyst/cellulose ratio was increased further to 5/1, the content of light furan compounds increased even further. The promotion of dehydration and cracking by the increased acid sites is believed to be the reason of the enhanced production of light furan compounds.…”

Section: Conversion Of Cellulose Over Sapo-11mentioning

confidence: 99%

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Catalytic Pyrolysis of Cellulose over SAPO-11 Using Py-GC/MS

Lee¹,

Jun²,

Kang³

et al. 2013

Bulletin of the Korean Chemical Society

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The catalytic pyrolysis of cellulose was carried out over SAPO-11 for the first time. Pyrolyzer-gas chromatography/mass spectroscopy was used for the in-situ analysis of the pyrolysis products. The acid sites of SAPO-11 converted most levoglucosan produced from the non-catalytic pyrolysis of cellulose to furans. In particular, the selectivity toward light furans, such as furfural, furan and 2-methyl furan, was high. When the catalyst/ cellulose ratio was increased from 1/1 to 3/1 and 5/1, the increase in the quantity of acid sites led to the promotion of deoxygenation and the resultant increase of the contents of light furan compounds. Because furans can be used as basic feedstock materials, the augmentation of the economical value of bio-oil through the catalytic upgrading over SAPO-11 is considerable.

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“…Levoglucosan is known to be produced by depolymerization during the non-catalytic pyrolysis of cellulose. 25 This levoglucosan is converted into other species when it passes …”

Section: Resultsmentioning

confidence: 99%

Section: Conversion Of Cellulose Over Sapo-11mentioning

confidence: 99%

Catalytic Pyrolysis of Cellulose over SAPO-11 Using Py-GC/MS

Lee¹,

Jun²,

Kang³

et al. 2013

Bulletin of the Korean Chemical Society

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“…The same results were observed in the pyrolysis analysis. Additionally, a considerable amount of levoglucosan and levoglucosenone (Lu et al, 2009) can be ruled out due to the lacking of the O-alkyl signal in the region of 70 ppm. It is important to note that the Py-CG-MS analysis provided a detailed view of the aromatic building blocks, indicating that hydrochar monomers are built on benzofuran-like components, whereas NMR provides valuable information on how these building blocks are connected in the hydrochar structure.…”

Section: Resultsmentioning

confidence: 99%

“…The resulting material is partly degraded lignocellulosic products composed by smaller molecules trapped into a polymeric matrix (Bridgwater, 2003). Once in the soil, the biochar functionalization is a time-consuming process that occurs naturally over a long period of time, as observed in the anthropogenic dark earth of Amazonia (Novotny et al, 2009;Glaser & Birk, 2012). Therefore, methods for the production and conversion of waste biomass into a highly functionalized biochar are a current challenge.…”

Section: Introductionmentioning

confidence: 99%

Molecular and morphological characterization of hydrochar produced by microwave-assisted hydrothermal carbonization of cellulose

Guiotoku

Hansel

Novotny

et al. 2012

Pesq. agropec. bras.

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-The objective of this work was to characterize the morphology and molecular composition of the hydrochar produced by microwave-assisted hydrothermal carbonization of cellulose. The produced hydrochar consists mainly of aggregate microspheres with about 2.0 µm in diameter, with aliphatic and aromatic structures and the presence of carbonyl functional groups. The aromatic groups are formed mainly by benzofuran-like structures, being chemically different from common cellulose char. Microwave-assisted hydrothermal carbonization yields a functionalized carbon-rich material similar to that produced by the conventional hydrothermal process.

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“…In a recent study, it was reported that fast pyrolysis of pure cellulose followed with catalytic cracking of the pyrolysis vapors with solid super acids (sulfated metal oxides, SO 4 2-/TiO 2 , SO 4 2-/ZrO 2 , SO 4 2-/SnO 2 , etc.) allowed the production of LGO with the content reaching 40% (peak area% on the GC/MS ion chromatograms) in the pyrolytic products (Lu et al, 2009a). In fact, when the solid super acids were mechanically mixed with cellulose, fast pyrolysis of the mixture also produced LGO with high purity.…”

Section: Levoglucosenonementioning

confidence: 99%