Effects of ionic catalysis on hydrogen production by the steam gasification of cellulose

被引:23
作者
Su, Shen [1 ,2 ]
Li, Wen [1 ]
Bai, Zongqing [1 ]
Xiang, Hongwei [2 ]
Bai, Jin [1 ]
机构
[1] Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
关键词
Hydrogen production; Ionic catalysis; Dehydrogenation; Cellulose; SUPERCRITICAL WATER; BIOMASS GASIFICATION; RICH GAS; PYROLYSIS; RATIOS; TAR;
D O I
10.1016/j.ijhydene.2010.02.066
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, significant effects of ionic catalysis on the formation of H-2 and CO during the steam gasification process of cellulose are revealed. The energy of the C-H bonds of cellulose can be remarkably reduced by Na+ and OH- ions produced by the dissociation of NaOH, enabling dehydrogenation of cellulose at low temperature. Dehydrogenation of cellulose is evidently affected by the concentration of Na+ and OH- ions that cellulose can come into contact with. Higher concentrations of Na+ and OH- ions can reduce the initial dehydrogenation temperature of cellulose to lower than 403 K. The production of CO increases after this remarkable dehydrogenation of cellulose, which indicates that the C-O bonds of cellulose are prone to forming CO by pyrolysis. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:4459 / 4465
页数:7
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