CaO/MgO复合固体碱催化剂催化降解木质素的研究

›› 2012, Vol. 32 ›› Issue (3): 81-86.

• 研究报告 • Previous Articles Next Articles

Degradation Behaviors of Lignin Catalyzed by CaO/MgO Composite as Solid Base Catalyst

WANG Yan¹, CHEN Yong-mei¹, WAN Ping-yu¹, HAN Yan-ming², QIN Te-fu²

1. School of Science, Beijing University of Chemical Technology, Beijing 100029, China;2. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China

Received:2011-07-22 Revised:1900-01-01 Online:2012-06-30 Published:2012-06-30

Abstract

Abstract: CaO/MgO composite was prepared by impregnating Ca(CH₃COO)₂ on MgO carrier. The surface basicity of the catalyst could reach 30.2 mmol/g under the ratio of CaO/MgO of 0.08 and calcination at 700℃ for 24 h. The catalytic activity of CaO/MgO powder was tested in degradation reaction of lignin. The results showed that the average molecular weight of lignin decreased from 3 000 to less than 800, and the hydroxyl value increased from 200 to more than 500. FT-IR spectra disclosed that the ether bonds were reduced, while hydroxyl bonds were increased significantly.

Key words: lignin, solid base catalysts, ether bonds

CLC Number:

TQ35
O636.2

WANG Yan;CHEN Yong-mei;WAN Ping-yu;HAN Yan-ming;QIN Te-fu. Degradation Behaviors of Lignin Catalyzed by CaO/MgO Composite as Solid Base Catalyst[J]. , 2012, 32(3): 81-86.

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Degradation Behaviors of Lignin Catalyzed by CaO/MgO Composite as Solid Base Catalyst

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