- Title
- A polarographic study of lignin reactions in soda pulping liquors
- Creator
- Burton, Peter
- Date
- 1986
- Type
- Text; Thesis; Masters
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/97266
- Identifier
- vital:10193
- Identifier
- https://library.federation.edu.au/record=b1121836
- Abstract
- Oxidation-reduction reactions between carbohydrates, lignin and quinone additives in Pinus radiata soda pulping liquors have been investigated. A reduction peak at -0.72 V (Vs SCE) was observed using differential pulse polarography when Pinus radiata wood is heated in alkaline solution in the presence of oxygen, and has been shown to result from the oxidation of lignin structures. The results of this study indicate that the electroactive species present in Pinus radiata soda pulping liquors is an oxidation product, resulting from the formation of phenoxy radicals and /or quinone methides. Although reduction potentials for anthraquinone, carbohydrates and the electroactive lignin structure fit the general redox mechanism propsed for accelerated delignification, the species observed by polarography in this study has been shown not to be involved in the main pulping reactions due to its low concentration.; Master of Applied Science
- Publisher
- Federation University Australia
- Rights
- Open Access
- Rights
- Copyright Peter Burton Library attempted to contact author. If you are the author and don't want your thesis publicly available please contact researchonline@federation.edu.au
- Rights
- This metadata is freely available under a CCO license
- Subject
- Lignin; Wood; Chemistry
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