Methanol at different mass concentrations(1,6,11,16,21 wt%)was added into crude bio-oil to upgrade oil properties.Indexes including pH value,water content and viscosity were measured regularly during a storage period ...Methanol at different mass concentrations(1,6,11,16,21 wt%)was added into crude bio-oil to upgrade oil properties.Indexes including pH value,water content and viscosity were measured regularly during a storage period of 91 days.GC-MS analysis was conducted before and after storage.An addition of 21 wt%methanol was found to improve the pH value from 2.97 to 3.88,and decrease the water content and viscosity after storage by 35.02%and 81.35%,respectively.The GC-MS analysis result convincingly showed that methanol could inhibit aging reactions such as polymerization and esterification which created new compounds in the oil.The FTIR and NMR analysis showed that methanol caused some structural changes in bio-oil.展开更多
基金Financial support from National Natural Science Foundation of China through contract(grant no.51176121)and financial support from the National Science and Technology Supporting Plan through contract(Grant No.2011BAD22B07)are greatly acknowledged.In addition,Daniel Lycett-Brown from the University of Southampton,UK is greatly acknowledged for his valuable suggestion and correction of the manuscript.
文摘Methanol at different mass concentrations(1,6,11,16,21 wt%)was added into crude bio-oil to upgrade oil properties.Indexes including pH value,water content and viscosity were measured regularly during a storage period of 91 days.GC-MS analysis was conducted before and after storage.An addition of 21 wt%methanol was found to improve the pH value from 2.97 to 3.88,and decrease the water content and viscosity after storage by 35.02%and 81.35%,respectively.The GC-MS analysis result convincingly showed that methanol could inhibit aging reactions such as polymerization and esterification which created new compounds in the oil.The FTIR and NMR analysis showed that methanol caused some structural changes in bio-oil.
