中国造纸学报2011，Vol.26Issue(2)：48-52,5.
催化剂对甘蔗渣碱木质素催化湿空气氧化降解的催化作用
Degradation of Bagasse Alkaline Lignin by Catalytic Wet Air Oxidation with Five Catalysts
摘要
Abstract
In this paper, bagasse alkaline lignin was degraded by Catalytic Wet Air Oxidation (CWAO) with five different catalysts. The results showed that the main degradation products were; p-hydroxybenzaldehyde, vanillin, syringaldehyde, syringic acid, vanillic acid and acetosyringone. The concentration of aromatic substances increased when the reaction time increased. Catalysts had a significant effect on the concentration of aromatic substances. Using CO2O3 as catalyst, the concentration of vanillin, syringaldehyde and acetosyringone were 400.2 mg/L, 351.4 mg/L, and 248.7 mg/L respectively, and the concentration of vanillin increased 82.6% comparing to no catalyst was used. Using AQ as catalyst, the concentration of vanillin was 344. 9 mg/L which was 1. 5 times of that without using catalyst. Using Co2O3, CuSO4, MnO2, AQ, Fe2O3 as catalysts, the total concentrations of phenolic aldehyde compounds were 1696 mg/L, 1658 mg/L, 1584 mg/ L, 1347 mg/L and 1250 mg/L respectively,which explained that using Co2O3 as the catalyst was the best, and CuSO4 and MnO2 were the next, the catalysts of AQ and Fe2O3 only contributed to produce several kinds of phenolic aldehyde compounds with small molecules.关键词
甘蔗渣/碱木质素/催化湿空气氧化法/催化剂Key words
bagasse/ alkaline lignin/ catalytic wet air oxidation/ catalyst分类
轻工纺织引用本文复制引用
姚向荣,詹怀宇,周生飞..催化剂对甘蔗渣碱木质素催化湿空气氧化降解的催化作用[J].中国造纸学报,2011,26(2):48-52,5.基金项目
本课题为国家自然科学基金(30972324)资助项目。 （30972324）
