pK<sub>a</sub>-Values of Guaiacyl and Syringyl Phenols Related to Lignin
Martin Ragnar(KTH Royal Institute of Technology), Christofer Lindgren(KTH Royal Institute of Technology), Nils‐Olof Nilvebrant(Teknikföretagen (Sweden))
Cited by 303
Abstract
Abstract The literature relating to the pKa -values of guaiacyl- and syringyl-derived phenols has been thoroughly surveyed and summarized. In addition, the pKa -values of a number of guaiacyl, syringyl and other phenols related to lignin have been determined using a spectrophotometric method combined with multivariate evaluation. Differences and similarities between the acidities of a number of substances are extensively discussed. The pKa -value strongly affects the delignification during pulping, bleaching and leaching of lignin during pulp washing.
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