Characterization of the water-insoluble fraction from fast pyrolysis liquids (pyrolytic lignin)

Scholze, Britta; Hanser, C; Meier, Dietrich

doi:10.1016/s0165-2370(00)00173-x

Cited by 286 publications

(251 citation statements)

References 10 publications

Supporting

Mentioning

236

Contrasting

Order By: Relevance

“…The distribution functions for acids and aldehydes were chosen so as to span the molecular weight range of the most frequently encountered compounds: from formic to hexanoic acid for the acid group, with a peak around acetic acid, and from acetaldehyde to 1-hydroxy-2-butanone for the aldehyde/ketone group, with a peak between 14 hydroxyacetaldehyde and hydroxypropanone. The lignin distribution was approximately fitted to an experimental one given by Scholze et al [12]; similar distributions are given by others [8,26,27].…”

Section: Fuel Propertiesmentioning

confidence: 80%

“…The main components are organic acids, aldehydes, ketones, phenols, anhydrosugars such as levoglucosan, pyrolytic lignin (comprising guaiacyl-and syringylbased fragments of the original lignin polymer) and substantial quantities of water, typically 25% [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Usually only trace amounts of hydrocarbons are present, the vast majority of the components being oxygenates.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A model for the evaporation of biomass pyrolysis oil droplets

Hallett¹,

Clark²

2006

Fuel

View full text Add to dashboard Cite

This paper presents a numerical model for the evaporation and pyrolysis of a single droplet of pyrolysis oil derived from biomass. Continuous thermodynamics theory for multicomponent droplet evaporation is used, with the fuel being represented by four fractions: organic acids, aldehydes/ketones, water, and pyrolytic lignin, each of which is described by a separate distribution function. Pyrolysis of the lignin fraction is included, and detailed properties for all fractions are presented. The model is compared with the results of suspended droplet experiments, and is shown to give good predictions of the times of the major events in the lifetime of a droplet.

show abstract

Section: Fuel Propertiesmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

A model for the evaporation of biomass pyrolysis oil droplets

Hallett¹,

Clark²

2006

Fuel

View full text Add to dashboard Cite

show abstract

“…According to the literature, the weight average (Mw) of lignin was detected from 649 to 10680 g·mol -1 and the number average (Mn) was from 376 to 4900 g·mol -1 (Scholze et al 2001). The values of the Mn, Mw, polydispersity (Mw/Mn), and total sulfur content of both lignins are listed in Table 2.…”

Section: Molecular Weight Distribution and Sulfur Contentmentioning

confidence: 95%

Effect of Desulfonation of Lignosulfonate on the Properties of Poly(Lactic Acid)/Lignin Composites

Ye¹,

Zhang²,

Yu³

2017

BioResources

View full text Add to dashboard Cite

To utilize the lignin generated by the paper industry and reduce the cost of poly(lactic acid) (PLA), PLA/lignin composites were prepared from PLA and different ratios of lignosulfonate (LS) or desulfonated lignosulfonate (DLS) particles using a casting method. The physicochemical properties of the lignins were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), gel permeation-high performance liquid chromatography (GPC), and elementary analysis. The results indicate that the sulfur content of the original LS was successfully reduced to half by desulfonation to produce DLS, which was found to have a higher thermal stability and a lower average molecular weight than LS. Additionally, the thermal stability, crystallization, compatibility, mechanical, hydrophobicity, and optical properties of the PLA/lignin composites were also meticulously evaluated. Comparison of the PLA/DLS and PLA/LS composites revealed that the incorporation of DLS into PLA improved compatibility, thermal stability (T5% and Tmax), and hydrophobicity, while the mechanical properties remained almost unchanged. In addition, both PLA/DLS and PLA/LS exhibited UV light absorption capacity. Finally, the low-rate addition of both LS (10%) and DLS (5%) accelerated the crystallization of PLA, but crystallization was delayed with higher lignin content.

show abstract

“…Fast pyrolysis of the lignin produced monomeric phenolic compounds and oligomers with different degrees of polymerization [32][33][34][35]. It is believed that the lignin-derived products are mainly responsible for the high molecular weight and viscosity of bio-oils, and thus, one of the aims of using catalysts in the pyrolysis process is to crack these products into lighter ones.…”

Section: Catalytic Effects On the Phenolic Compoundsmentioning

confidence: 99%

Catalytic Upgrading of Biomass Fast Pyrolysis Vapors with Nano Metal Oxides: An Analytical Py-GC/MS Study

et al. 2010

View full text Add to dashboard Cite

Fast pyrolysis of poplar wood followed with catalytic cracking of the pyrolysis vapors was performed using analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The catalysts applied in this study were nano MgO, CaO, TiO 2 , Fe 2 O 3 , NiO and ZnO. These catalysts displayed different catalytic capabilities towards the pyrolytic products. The catalysis by CaO significantly reduced the levels of phenols and anhydrosugars, and eliminated the acids, while it increased the formation of cyclopentanones, hydrocarbons and several light compounds. ZnO was a mild catalyst, as it only slightly altered the pyrolytic products. The other four catalysts all decreased the linear aldehydes dramatically, while the increased the ketones and cyclopentanones. They also reduced the anhydrosugars, except for NiO. Moreover, the catalysis by Fe 2 O 3 resulted in the formation of various hydrocarbons. However, none of these catalysts except CaO were able to greatly reduce the acids.

show abstract

Characterization of the water-insoluble fraction from fast pyrolysis liquids (pyrolytic lignin)

Cited by 286 publications

References 10 publications

A model for the evaporation of biomass pyrolysis oil droplets

A model for the evaporation of biomass pyrolysis oil droplets

Effect of Desulfonation of Lignosulfonate on the Properties of Poly(Lactic Acid)/Lignin Composites

Catalytic Upgrading of Biomass Fast Pyrolysis Vapors with Nano Metal Oxides: An Analytical Py-GC/MS Study

Contact Info

Product

Resources

About