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The Influence of Solvent and Derivatization on the 1H NMR Spectral Properties of Lignin Model Compounds

Shiming Li (Institutionen för kemi- och bioteknik, Fysikalisk kemi) ; Knut Lundquist (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Jim Parkås
Proceedings of the10th EUROPEAN WORKSHOP ON LIGNOCELLULOSICS AND PULP, EWLP 2008; KTH Royal institute of Technology, Stockholm, Sweden 25-28 August 2008 p. 312-315. (2008)
[Konferensbidrag, refereegranskat]

1H NMR spectral data for lignin model compounds are of interest in connection with the interpretation of NMR spectra of lignins recorded by 1D (1H NMR) and certain 2D spectroscopic techniques. Derivatization influences the peak positions in the 1H NMR spectra of lignin models to a large extent. Similarly an exchange of solvent often results in dramatic shifts of peak positions. Solvent and derivatization effects can be employed for the interpretation of lignin spectra in structural terms. This is here exemplified by results from analyses of lignin samples with respect to total hydroxyl, phenolic groups, distribution of diastereomers of arylglycerol β-aryl ethers, different types of β-β structures and occurrence of 1-aryl-2-aryloxy-1-propanone structures.



Denna post skapades 2008-11-04. Senast ändrad 2008-11-04.
CPL Pubid: 76828

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Fysikalisk kemi (2005-2014)
Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik (2005-2014)

Ämnesområden

Organisk kemi
Trävetenskap

Chalmers infrastruktur