[1] [1] Demirbas M F, Balat M. Energy Conversion and Management, 2006, 47(15-16): 2371.

[3] [3] Demirbas A. Energy Conversion and Management, 2001, 42(11): 1357.

[4] [4] Huber G W, Iborra S, Corma A. Chemical Reviews, 2006, 106(9): 4044.

[5] [5] Rezzoug S A, Capart R. Applied Energy, 2002, 72(3-4): 631.

[7] [7] Rezzoug S A, Capart R. Energy Conversion and Management, 2003, 44(5): 781.

[8] [8] Demirbas A. Energy Conversion and Management, 2000, 41(16): 1741.

[9] [9] Xu C, Etcheverry T. Fuel, 2008, 87(3): 335.

[10] [10] Yamazaki J, Minami E, Saka S. Journal of Wood Science 2006, 5: 527.

[11] [11] Li J, Wu L, Yang Z. Journal of Analytical and Applied Pyrolysis, 2008, 81(2): 199.

[12] [12] El Mansouri N E, Salvad J. Industrial Crops and Products, 2007, 26(2): 116.

[13] [13] Qian Y, Zuo C, Tan J, et al. Energy, 2007, 32(3): 196.

[14] [14] Zhang T, Zhou Y, Liu D, et al. Bioresource Technology, 2007, 98(7): 1454.