The analysis of microstructure and polymerization degree showed that acid wash altered the cellulose morphology and decreased the polymerization degree significantly. A series of experiments were done to study the effect of acid wash on cellulose rapid pyrolysis. Experimental results showed that under acid pretreatment, the yield of bio-oil decreased while the production of gas and char increased. With an increase in acid concentration, this trend would be further enhanced. Sulphuric acid limited the formation of bio-oil more effectively than hydrochloric acid and phosphoric acid. According to the GC-MS analysis of bio-oil, high-concentration acid wash restrained the formation of levoglucosan by catalyzing dehydration process and cross linking reaction.
WANG Shurong, LIU Qian, LUO Zhongyang, CEN Kefa, LIAO Yanfen
. Experimental study of the influence of acid wash on cellulose pyrolysis[J]. Frontiers of Chemical Science and Engineering, 2007
, 1(1)
: 35
-39
.
DOI: 10.1007/s11705-007-0007-7