|
Korean Journal of Chemical Engineering, Vol.24, No.2, 336-340, 2007
A study on the mechanism research on cellulose pyrolysis under catalysis of metallic salts
Experimental research on cellulose pyrolysis under catalysis of metallic salts was done on a thermobalance and a rapid pyrolysis system. Thermogravimetric analysis showed that K+ catalyzed the formation of active cellulose strongly and decreased the activation energy of cellulose pyrolysis. Experimental results indicated that K+ would promote the formation of char and restrain the production of bio-oil largely. Fe2+ had a similar catalysis effect on cellulose pyrolysis with K+. Fe2+ particularly catalyzed the formation of small molecule gaseous product while K+ the formation of char. The addition of K+ or Fe2+ resulted in a reduction of levoglucosan formation, and enhanced the production of hydroxyacetaldehyde and other small molecule components. Levoglucosan and hydroxyacetaldehyde were formed by the decomposition of active cellulose in a parallel mode. The secondary cracking of levoglucosan would also produce hydroxyacetaldehyde. A modified cellulose pyrolysis mechanism model was proposed based on the B-S model.
[References]
- Dobele G, Meier D, Faix O, Radtke S, Rossinskaja G, Telysheva G, J. Anal. Appl. Pyrolysis, 58-59, 453, 2001
- Luo ZY, Wang SR, Liao YF, Zhou JS, Gu YL, Cen KF, Biomass Bioenerg., 26, 455, 2004
- Yaman S, Energy Conv. Manag., 45, 651, 2004
- Rodjeen SN, Mekasut LS, Kuchontara PP, Piumsomboon PP, Korean J. Chem. Eng., 23(2), 216, 2006
- Sutton D, Kelleher B, Ross JRH, Fuel Process. Technol., 73, 155, 2001
- Brown RC, Liu Q, Norton G, Biomass Bioenerg., 18, 499, 2000
- Thy P, Lesher CE, Jenkins BM, Fuel, 79, 693, 2000
- Dobele G, Rossinskaja G, Dizhbite T, Telysheva G, Meier D, Faix O, J. Anal. Appl. Pyrolysis, 74, 401, 2005
- Richards GN, Zheng GC, J. Anal. Appl. Pyrolysis, 21, 133, 1991
- Koval'chuk EP, Reshetnyak OV, Kozlovs'ka ZY, Blazejowski J, Gladyshevs'kyj RY, Obushak MD, Thermochim. Acta, 444(1), 1, 2006
- Kim S, Eom Y, Korean J. Chem. Eng., 23(3), 409, 2006
- Luo ZY, Wang SR, Liao YF, Cen KF, Ind. Eng. Chem. Res., 43(18), 5605, 2004
- Antal MJ, Varhegyi G, Ind. Eng. Chem. Res., 34(3), 703, 1995
- Li S, Hart JL, Banyasz J, Shafer K, Fuel, 80, 1809, 2001
- Bradbury AGW, Sakai Y, Shafizadeh F, J. Appl. Polym. Sci., 23, 3271, 1979
- Liao YF, Wang SR, Luo ZY, Zhou JS, Yu CJ, Cen KF, Journal of Zhejiang University (Engineering Science), 36, 172, 2002
- Richards GN, J. Anal. Appl. Pyrolysis, 10, 251, 1987
- Piskorz J, Radlein D, Scott DS, Czernik S, J. Anal. Appl. Pyrolysis, 16, 127, 1989
- Liao YF, Wang SR, Ma XQ, Luo ZY, Cen KF, Chin. J. Chem. Eng., 13(2), 197, 2005
- Shafizadeh F, Lai YZ, J. Org. Chem., 37, 278, 1972
[Cited By]
- Sun S, Zhao Y, Su F, Ling F, Korean Journal of Chemical Engineering, 26(2), 528, 2009
- Liu Q, Wang S, Wang K, Luo Z, Cen K, Korean Journal of Chemical Engineering, 26(2), 548, 2009
|