ZnCl<sub>2</sub>催化木质素磺酸盐加氢液化的溶剂效应

叶俊; 李广学; 周博涵; 曹从伟; 杨和彦; 李家鸣

ZnCl₂催化木质素磺酸盐加氢液化的溶剂效应

1.
安徽理工大学化工学院, 安徽淮南 232001;
2.
淮南市产品质量监督检验所, 安徽淮南 232001

基金项目: 安徽省教育厅重点科研(03kj022zd)。

详细信息

通讯作者:
李广学, Tel: 0554-6668563, 13605543213, E-mail: gxli@aust.edu.cn。

中图分类号: TK6
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- 被引次数: 0
出版历程
- 收稿日期: 2011-04-03
- 刊出日期: 2012-03-31

Solvent effect of lignosulfonate liquidfaction by ZnCl₂ catalyzed hydrogenation

1.
College of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China;
2.
Huainan Municipal Bureau of Quality and Technical Supervision, Huainan 232001, China

摘要

摘要: 选用ZnCl₂为催化剂在高压反应釜中进行加氢液化反应,利用GC-MS和红外光谱技术,研究溶剂极性及供氢能力对木质素磺酸盐液化产率及产物的影响。产率分析表明,极性溶剂有利于木质素液化转化,供氢溶剂有利于提高轻馏分产率,水溶剂条件下木质素液化转化率最高,甲醇溶剂体系条件下轻馏分产率最高,相对最低液化转化率及轻馏分产率的1,4二氧六环溶剂体系分别提高2.0倍和1.9倍。GC-MS分析表明,中等极性溶剂有利于中间产物溶解稳定,供氢溶剂四氢萘通过释放氢自由基结合稳定中间产物。乙醇溶剂条件下中间产物相对含量是48.76%,相对最低含量水溶剂体系提高2.2倍。红外光谱分析表明,醇类溶剂参与反应,焦油产物羟基峰强度增强。
- ZnCl₂ /
- 木质素 /
- 溶剂效应 /
- 催化加氢 /
- 液化
Abstract: Select ZnCl₂ as catalyst for hydrogenation and liquefaction in the autoclave, study polarity and hydrogen of solvent for the liquefaction yield of lignin sulfonate and products by GC-MS and infrared spectroscopy. Yield analysis shows, solvent's polar favor for lignin conversion, hydrogen donor solvent can improve the yield of light distillate, the highest conversion of lignin under water and the highest yield of light distillate under the methanol conditions, increased 2.0-times and 1.9-times compare to lowest yield of 1,4-dioxane solvent;GC-MS analysis showed, medium polarity solvents was well to neutral fraction stability, hydrogen donor solvent tetralin can release of hydrogen to binding and stability the radical intermediates,Ethanol have the neutral product of the relative content of 48.76% relative to the minimum 2.2 times the water solvent systems. Infrared analysis showed, in response to alcohol solvent, tar products of hydroxyl peak intensity increased.
- ZnCl₂ /
- lignin /
- solvent effect /
- catalytic hydrogenation /
- liquefaction

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参考文献(13)

LIU Z, 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.

KLEINERT M, BARTH T. Towards a lignincellulosic biorefinery: Direct one-step conversion of lignin to hydrogen-enriched biofuel[J]. Energy Fuels, 2008, 22(2): 1371-1379.

KLEINERT M, GASSON J R, BARTH T. Optimizing solvolysis conditions for integrated depolymerisation and hydrodeoxygenation of lignin to produce liquid biofuel[J]. J Anal Appl Pyrolysis, 2009, 85(1/2): 108-117.

DORRESTIJN E, KRANENBURG M, POINSOT D, MULDER P. Lignin depolymerization in hydrogen-donor solvents[J]. Holzforschung, 1999, 53(6): 611-616.

LEE S H, WANG S. Effect of water on wood liquefaction and the properties of phenolated wood[J]. Holzforschung, 2005, 59(6): 628-634.

Onu C O, Verculen. Zincchloride catalysis in coal and biomass liquefaction at prepyrolysis temperatures[Z]. Report: LBL-11769 University of California, Berkeley, USA, 1980.

VUORI A, NIEMELA M, Liquefaction of kraft lignin: II Reactions with a homogeneous Lewis acid catalyst under mild reaction conditions[J]. Holzforschung, 1988, 42(5): 327-334.

MILLER J E, EVANS L, LITTLEWOLF A, TRUDELL D E. Batch microreactor studies of lignin and lignin model compound depolymerization by bases in alcohol solvents[J]. Fuel, 1999, 78(11): 1363-1366.

CONNORS W J, JOHANSON L N, SARKANEN K V, WINSLOW P. Thermal degradation of kraft lignin in tetralin[J]. Holzforschung, 1980, 34(1): 29-37.

谌凡更, 欧义芳. 木质纤维原料的热化学液化[J]. 纤维素科学与技术, 2000, 8(1): 44-57. (CHEN Fan-geng, OU Yi-fang. Thermochemical liquefaction of lignocellulosic materials[J]. Journal of Cellulose Science and Technology, 2000, 8(1): 44-57.)

CHENG S, D'CRUZ L, WANG M, LEITCH M, XU C. Highly efficient liquefaction of woody biomass in hot-compressed alcohol-water co-solvents[J]. Energy Fuels, 2010, 24(9): 4659-4667.

GOMEZ-SERRANO V, PASTOR-VILLEGAS J, PEREZ-, FLORINDO A, DURAN-VALLE C, VALENZUELA-CALAHORRO C. FTIR study of rockrose and of char and activated carbon[J]. J Anal Appl Pyrolysis, 1996, 36(1): 71-80.

KUMAR S, GUPTA R B. Biocrude production from switchgrass using subcritical water[J]. Energy Fuels, 2009, 23(10): 5151-5159.

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