微波液化木材动力学研究及产物分析

›› 2010, Vol. 30 ›› Issue (3): 66-72.

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Kinetics of Wood Liquefaction Using Microwave Heating and Products Analysis

FENG Guo-dong¹, ZHOU Yong-hong^1,3, GUO Xiao-xin¹, HU li-hong^1,2

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.on Forest Chemical Engineering, SFA;Key Lab.of Biomass Energy and Material, Nanjing 210042, China;2. Institute of New Technology of Forestry, CAF, Beijing 100091, China;3. Jiangsu Qianglin Biomass Energy Co., Ltd., Liyang 213364, China

Received:2009-11-16 Revised:1900-01-01 Online:2010-06-30 Published:2010-06-30

Abstract

Abstract: Wood liquefacient was carried out from alcoholysis of waste bottles (polyethylene terephthalate,PET) using microwave irradiation. The relationship between the rate of liquefaction and time was discussed. The results showed that wood liquefaction obeys the second-order kinetics. Liquefaction activation eneryy E_awas 1.76×10⁵ and pre-exponetial factor A was 0.891e^50.28(s·mol)/L². Percentage content of water-solubles decreased and that of ethyl acetate-solubles increased with the increase of liquefaction time. The products of different liquefaction time and different extraction of GPC and HPLC-MS/MS analyses showed that, the relative molecular mass (M_r) of lignin pyrolysis products were 400-200. The M_r of cellulose pyrolysis products was more than 10 000. The M_r of water-insoluble products from some PET debris and re-polymerization of liquefied products was more than 10 000.The hydroxyl value, acid value and viscosity (25℃) of the products increased with the increase of time. The infrared spectra of each extract fraction had little difference.

Key words: wood liquefaction, polyethylene terephthalate, kinetics, products analysis, GPC, HPLC-MS/MS

CLC Number:

FENG Guo-dong;ZHOU Yong-hong;GUO Xiao-xin;HU li-hong;. Kinetics of Wood Liquefaction Using Microwave Heating and Products Analysis[J]. , 2010, 30(3): 66-72.

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Kinetics of Wood Liquefaction Using Microwave Heating and Products Analysis

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