Frontiers of Chemical Science and Engineering
>> 2007,
Volume 1,
Issue 1
doi:
10.1007/s11705-007-0007-7
Experimental study of the influence of acid wash on cellulose pyrolysis
1.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China; 2.Electric Power College, South China University of Technology, Guangzhou 510640, China;
Available online: 2007-03-05
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Abstract
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.
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