Multivariate correlation between 13C and 31P NMR spectral data on dissolved lignin and the combustion properties of kraft black liquor
✍ Scribed by P. Malkavaara; R. Alén; E. Kolehmainen
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 68 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
A multivariate chemometric analysis was performed to establish what relationships subsist between the relevant combustion properties (burning time and swelling) of softwood and hardwood kraft black liquors and the chemical structure of the dissolved lignin in these liquors. The lignin material was characterized in terms of NMR and average molecular mass data. 13 C and 31 P NMR spectra were used to reveal the total amount of different aliphatic and phenolic hydroxyl groups. On the basis of all the analytical data, a relatively accurate model for predicting the combustion properties of kraft black liquors was developed.