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Quantitative lignin analysis based on permanganate oxidation

Jim Parkås (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Gösta Brunow ; Knut Lundquist (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik)
9th European Workshop on Lignocellulosics and Pulp, August 27-30, Vienna, Austria (2006)
[Konferensbidrag, refereegranskat]

Aromatic acids obtained on permanganate oxidation of pretreated (cleavage of ethers and alkylation of phenolic groups) lignins offer a possibility to estimate the amounts of differently substituted aromatic units in lignins. An equation is derived to simplify the calculation of the gross composition of lignins based on the yields of methoxy-substituted aromatic acids obtained on permanganate oxidation of lignins with methylated phenolic groups. The fact that only phenolic groups yield degradation acids makes it possible, under certain conditions, to use the equation for the estimation of the phenol content in a lignin sample.



Denna post skapades 2007-02-02.
CPL Pubid: 26254

 

Institutioner (Chalmers)

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

Ämnesområden

Kemiteknik

Chalmers infrastruktur