Effect of liquefaction temperature on hydroxyl groups of bio-oil from loblolly pine (Pinus taeda)

— filed under:

Y. Celikbag, B. K. Via, S. Adhikari, and Y. Wu, “Effect of liquefaction temperature on hydroxyl groups of bio-oil from loblolly pine (Pinus taeda),” Bioresource Technology, vol. 169, pp. 808–811, Oct. 2014.

Type Journal Article
Author Yusuf Celikbag
Author Brian K. Via
Author Sushil Adhikari
Author Yonnie Wu
URL http://www.sciencedirect.com/science/article/pii/S0960852414010645
Volume 169
Pages 808-811
Publication Bioresource Technology
ISSN 0960-8524
Date October 2014
Journal Abbr Bioresource Technology
DOI 10.1016/j.biortech.2014.07.075
Abstract Abstract Loblolly pine was liquefied with ethylene glycol at 100, 150, 200 and 250 °C in order to analyze the effect of liquefaction temperature on hydroxyl groups of bio-oil, and to determine the source and variation of hydroxyl groups. The optimum temperature was found to be 150–200 °C. Hydroxyl number (OHN) of the bio-oil was ranged from 632 to 1430 mg KOH/g. GC–MS analysis showed that 70–90% of OHN was generated from unreacted EG. 31P NMR analysis showed that the majority of hydroxyl groups were aliphatic, and none of the bio-oil exhibited any detectable hydroxyl groups from phenolic sources. Finally, it was found that all bio-oils were stable in terms of OHN for 2 months when stored at −10 °C.


Keywords:

 

  • biomass
  • Ethylene glycol
  • Liquefaction
  • Molecular weight
  • Pinus taeda
  • Polymers
  • Polyols
  • Production
  • Sulphuric acid
  • Thermal properties

Download File

citation.ris — Octet Stream, 1Kb

 
Document Actions
Personal tools