|SHARMA, BRAJENDRA - University Of Illinois|
|SCOTT, JOHN - University Of Illinois|
|MURALI, DHEEPTHA - University Of Illinois|
|LARSON, RICHARD - University Of Illinois|
|MARLEY, KAREN - University Of Illinois|
|Doll, Kenneth - Ken|
|RAJAGOPALAN, NANDAKISHORE - University Of Illinois|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/29/2014
Publication Date: 9/2/2014
Citation: Sharma, B.K., Scott, J., Murali, D., Larson, R.A., Marley, K.A., Doll, K.M., Moser, B.R., Rajagopalan, N. 2014. Chemicals derived from pyrolysis bio-oils as antioxidants in fuels and lubricants [abstract]. Thermocatalytic Conference (TCS) 2014, Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products, September 2-5, 2014, Denver, CO. p. 29.
Technical Abstract: Softwood and hardwood lignins and hardwood were pyrolyzed to produce bio-oils to produce lignin-derived bio-oils of which phenols were the major component. These bio-oils were extracted with alkali to yield a range of lignin-related phenols having molecular weights (MWs) from 110 to 344. When tested with soybean-derived methyl esters, the extract was equal in antioxidant activity to the synthetic compound butylated hydroxytoluene (BHT). Although many of the monomeric constituents of the mixture showed little or no activity, a model lignan, nordihydroguaiaretic acid (MW 302), did show activity comparable or slightly superior to BHT. A series of phenols in the distillate have observed MWs of 302, 316, 330, and 344, consistent with dimeric structures which may be responsible for the observed antioxidant properties. The paper will present these findings and also the results from bio-oil derived phenolic extract evaluation as an antioxidant in vegetable oil based lubricants.