Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism

FANG Tian-xiang; HOU Pei-dong; JIANG Xing-jia; YANG Jian-li

Volume 42 Issue 12

Dec. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(12): 1431-1439

FANG Tian-xiang, HOU Pei-dong, JIANG Xing-jia, YANG Jian-li. Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1431-1439.

Citation:

FANG Tian-xiang, HOU Pei-dong, JIANG Xing-jia, YANG Jian-li. Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1431-1439.

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Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Synfuels China Co., Ltd., Beijing 101407, China

Received Date: 2014-04-08
Rev Recd Date: 2014-05-30
Publish Date: 2014-12-30

Abstract

Abstract

The alcoholysis of pine sawdust with acidified ethylene glycol (EG) as solvent was investigated; the influence of reaction temperature and time on the conversion of pine sawdust was examined. The alcoholysis residual was characterized by thermogravimetry (TG), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM) and X-ray diffraction (XRD), whereas the composition and properties of hexane insoluble components (HIS) and hexane soluble ones (HS) were determined by FT-IR and gas chromatography-mass spectrometry (GC-MS). The results showed that the conversion of pine sawdust reaches a maximum of 95.3% at 160 ℃ after reaction for 90 min. By the alcoholysis, the amorphous components of cellulose and lignin were decomposed and the surface structure of alcoholysis residual is destructed. The hexane insoluble components are composed of compounds with oxygen-bearing functional groups such as hydroxyl, methoxyl and ether, whereas the hexane soluble components consist of mainly phthalic acid esters, methyl stearate, 2-methyl propyl caproate, 2-methyl propionic acid, polyethylene glycol and unreacted EG. The esterification of EG with carboxylic acid, derived from pine sawdust, can improve the stability of liquid product and promote the alcoholysis of pine sawdust, whereas the self-condensation of EG, forming polyethylene glycol, may increase the consumption of EG.
- pine sawdust,
- alcoholysis,
- product,
- composition,
- mechanism

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References(21)

References

BP Statistical Review of World Energy[Z]. 2013. 6.

吕卫军. 生物质和生物质能的未来[J]. 造纸信息, 2013, (3). (LV Wei-jun, The future of biomass and biomass energy[J]. China Paper Newsletter, 2013, (3).)

LE VAN MAO R, ZHAO Q, DIMA G, PETRACCONE D. New Process for the acid-catalyzed conversion of cellulosic biomass (AC₃B) into alkyl levulinates and other esters usinga unique one-pot system of reaction and product extraction[J]. Catal Lett, 2011, 141(2): 271-276.

BUNGAY R R. Biomass refining[J]. Science, 1982, 218(4573): 643-646.

BALIBAN R C, ELIA J A, FLOUDAS C A. Biomass to liquid transportation fuels (BTL) systems: Process synthesis and global optimization framework[J]. Energy Environ Sci, 2013, 6(1): 267-287.

METTLER M S, MUSHRIF S H, PAULSEN A D, JAVADEKAR A D, VLACHOS D G, DAUENHAUER P J. Revealing pyrolysis chemistry for biofuels production: Conversion of cellulose to furans and small oxygenates[J]. Energy Environ Sci, 2012 , 5(1): 5414-5424.

LIU Z G, ZHANG F S. Effects of various solvents on the liquefaction of biomass to produce fuels and chemical feedstocks[J]. Energy Convers Manage, 2008, 49(12): 3498-3504.

SONGFENGWANG Q, CAI J Y, WANG Y H, ZHANG J J, YUA W Q, XU J. Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation-hydrogenolysis process[J]. Energy Environ Sci, 2013, 6(3): 994-1007.

YUEH R, ZHAO Y J, MA X B, GONG J L. Ethulene glycol: Properties, synthesis, and applications[J]. Chem Soc Rew, 2012, 41(11): 4218-4244.

谭洪. 生物质热裂解机理试验研究[D]. 浙江: 浙江大学, 2005. (TAN Hong. Experimental study on the mechanism of biomass pyrolysis[D]. Zhejiang: Zhejiang University, 2005.)

WANG G, LI W, LI B Q, CHEN H K. TG study on pyrolysis of biomass and its three components under syngas[J]. Fuel, 2008, 87(4/5): 552-558.

MESZAROS E, JAKAB E, VARHEGYI G. TG/MS, Py-GC/MS and THM-GC/MS study of the composition and therm behavior of extractive components of Robinia pesudoacacia[J]. J Anal Appl Pyrolysis, 2007, 79(1/2): 61-71.

张海荣, 庞浩, 石锦志, 廖兵. 木粉及其组分的多元醇酸催化热化学液化[J]. 林产化学与工业, 2012, 32(2): 14-20. (ZHANG Hai-rong, PANG Hao, SHI Jing-zhi, LIAO Bing. TG study on major biomass components and its liquefied residues from pyrolysis[J]. Chemical Industry and Engineering Progress, 2012, 32(2): 14-20.)

WANG Z Y, CAO J Q, WANG J. Pyrolytic characteristic of pine wood in a slowly heating and gas sweeping fixed-bed reactor[J]. J Anal Appl Pyrolysis, 2009, 84(2): 179-184.

RONCERO M B, TORRES A L, COLOM J F, VIDA T. TCF bleaching of wheat straw pulp using ozone and xylanase, Part A: Paper quality assessment[J]. Bioresource Technol, 2003, 87(3): 305-314.

王文亮, 虞宇翔, 常建民, 白甜甜. 两种树皮热解微晶结构及生物油组分对比[J]. 燃料化学学报, 2013, 41(11): 1310-1315. (WANG Wen-liang, YU Yu-xiang, CHANG Jian-min, BAI Tian-tian. Comparative analysis of micro-crystal structures and bio-oils from pyrolyisis of two barks[J]. Journal of Fuel Chemistry and Technology, 2013, 41(11): 1310-1315.)

LIEVENS C, MOURANT D, HE M, GUNAWAN R, LI X, LI C Z. An FT-IR spectroscopic study of carbonyl functionalities in bio-oils[J]. Fuel, 2011, 90(1): 3417-3423.

李坚. 木材波普学[M]. 北京: 科学出版社, 2003. (LI Jian. Wood spectroscopy[M]. Beijing: Science Press, 2003.)

YAMADA T, ONO H. Characterization of the products resulting from ethylene glycol liquefaction of cellulose[J]. J Wood Sci, 2001, 47(6): 458-464.

HUBER G W, IBORRA S, CORMA A. Synthesis of transportation fuels from biomass: Chemistry, catalysts, and engineering[J]. Chem Rev, 2006, 6(9): 4044-4098.

ZOU X W, QIN T F, HUANG L H, ZHANG X, YANG Z, WANG Y. Mechanisms and main regularities of biomass liquefaction with alcoholic solvents[J]. Energy Fuels, 2009, 23(10): 5213-5218.

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