Production of Levoglucosan by Pyrolysis of Carbohydrates. Pyrolysis in Hot Inert Gas Stream

Lakshmanan, C.; Hoelscher, H. E.

doi:10.1021/i360033a011

Cited by 41 publications

(23 citation statements)

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“…The main constraint that limits the utilization of levoglucosan is its high price, which is a consequence of its production and purification, and different processes have been suggested for preparation of the anhydrous sugar 5. 6…”

Section: Introductionmentioning

confidence: 99%

Formation of Furfural in Catalytic Transformation of Levoglucosan over Mesoporous Materials

Käldström¹,

Kumar²,

Heikkilä³

et al. 2010

ChemCatChem

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Catalytic transformations of levoglucosan (1‐6‐anhydro‐β‐D‐glucopyranose) and furfural were carried out in a fixed‐bed reactor at 573 K over mesoporous materials. Proton forms of MCM‐41, MCM‐48, SBA‐15, and platinum form of MCM‐48 catalysts were tested in the reaction, whereas H‐Beta and quartz sand were used as reference materials. The yield of the transformation products was substantially influenced by the catalyst structures. Oxygenated species were the main liquid products, consisting mainly of aldehydes and furfural. The formation of furfural was the highest over MCM‐41 catalyst followed by SBA‐15, MCM‐48, and H‐Beta catalyst. All catalysts were to some extent deactivated due to coke formation. However, it was possible to successfully regenerate the spent catalysts without changing the structure.

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Section: Introductionmentioning

confidence: 99%

Formation of Furfural in Catalytic Transformation of Levoglucosan over Mesoporous Materials

Käldström¹,

Kumar²,

Heikkilä³

et al. 2010

ChemCatChem

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“…Since levoglucosan is one of products of thermal decomposition of cellulose, starch, and glucose [1][2][3], we conducted thermodynamic analysis of the following processes: a-D-glucose…”

Section: Thermodynamics Of Synthesis Levoglucosan From Carbohydratesmentioning

confidence: 99%

“…It is also the raw material for producing biodegradable polymers, antibiotics, and other agents [1,2]. Levoglucosan is formed during catalytic thermal processing of carbohydrate components of plant biomass [3]. The comprehensive study of the thermodynamic properties for this substance is needed to optimize the processes of synthesis and conversion of levoglucosan.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of thermodynamic properties of levoglucosan

Kabo

Paulechka

Voitkevich

et al. 2015

The Journal of Chemical Thermodynamics

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“…Levoglucosan (LG) is the primary decomposition product of cellulose, therefore a main compound in wood derived bio-oils [22,23]. Biomass pyrolysis offers the possibility for industrial scale LG production [10,24] for chemical synthesis and fermentation processes [25,26], however, LG yield is highly sensitive to the conditions of pyrolysis [25] or to the presence of metals [27].…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the pyrolysis of metal- and ash-enriched wood and the combustion properties of the gained char

Mayer

Apfelbacher

Hornung

2012

Journal of Analytical and Applied Pyrolysis

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This study aims to investigate the pyrolysis behaviour of metal-contaminated wood and the combustion properties of char derived from wood pyrolysis. Seven metals (Na, Mg, Ca, Zn, Cd, Pb and Fe(III)) were introduced to willow in cation form by ion-exchange and the thermal behaviour of demineralised samples and samples with additional ash were also investigated. The results show that the char yield increased from 21% to 24-28% and levoglucosan yield in vapour phase decreased from 88% to 62-29% after the addition of inorganic compounds, even though the metal binding capacity of wood varied from one metal ion to another. While char yield seems to be effected mainly by the concentration of the metal ions, levoglucosan yield was more dependent on the ionic species especially when sodium ions were present. When combustion experiments were carried out with char made of the metal enriched wood, two consecutive steps were observed, both effected by the presence of inorganic compounds. The first step was identified as the release and combustion of volatiles, while the second peak of the burning profile is the actual combustion of the fixed carbon. The burnout temperatures, estimated ignition indices and the conversion indicate that the type and not the amount of metal ions were the determining factors during the second step of combustion

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Production of Levoglucosan by Pyrolysis of Carbohydrates. Pyrolysis in Hot Inert Gas Stream

Cited by 41 publications

References 0 publications

Formation of Furfural in Catalytic Transformation of Levoglucosan over Mesoporous Materials

Formation of Furfural in Catalytic Transformation of Levoglucosan over Mesoporous Materials

Experimental and theoretical study of thermodynamic properties of levoglucosan

A comparative study on the pyrolysis of metal- and ash-enriched wood and the combustion properties of the gained char

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