Energy & Fuels
MetadataShow full item record
This study investigates the formation and characteristics of reaction intermediates from the fast pyrolysis of NaCl and MgCl2-loaded celluloses (75-106 µm) at 150-400 °C. The loading of MgCl2 lowers the onset temperature of cellulose pyrolysis. At low temperatures (e.g., 150 °C), the loading of MgCl2 increases the yield of water-soluble intermediates and significantly enhances the formation of sugar and anhydro-sugar oligomers. However, the effect of NaCl loading is minimal under the similar conditions. The results suggest that the loading of MgCl2 catalyzes the cleavage of both hydrogen bonds and glycosidic bonds during cellulose pyrolysis at low temperatures. At increased temperatures (250 °C and above), both the loading of NaCl and the loading of MgCl2 greatly enhance the destruction of sugar ring structures within the pyrolyzing cellulose. The conversion of water-insoluble solid into water-soluble intermediates, which are important precursors for volatile formation, is reduced significantly, leading to an increase in char yield.
Showing items related by title, author, creator and subject.
Effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°CLiu, Dawei; Yu, Yun; Long, Y.; Wu, Hongwei (2014)This study reports the effect of MgCl2 loading on the evolution of reaction intermediates during cellulose fast pyrolysis at 325°C. The loading of MgCl2 significantly changes the reaction pathways of cellulose pyrolysis ...
Formation and characteristics of glucose oligomers during the hydrolysis of cellulose in hot-compressed waterYu, Yun (2009)Energy production from fossil fuels results in significant carbon dioxide emission, which is a key contributor to global warming and the problems related to climate change. Biomass is recognized as an important part of ...
Contribution of dehydration and depolymerization reactions during the fast pyrolysis of various salt-loaded celluloses at low temperaturesLiu, Dawei; Yu, Yun; Hayashi, J.; Moghtaderi, B.; Wu, Hongwei (2014)The loaded salts (NaCl, KCl, MgCl2, and CaCl2) have significantly different influence on the contribution of dehydration and depolymerization reactions to the decomposition of sugar structures during cellulose fast pyrolysis ...