文献类型：期刊文献

英文题名：Thermodynamic analysis of aqueous-reforming of polylols for hydrogen generation

作者：Luo, Nianjun[1]; Cao, Fahai[2]; Zhao, Xun[1]; Xiao, Tiancun[2,3]; Fang, Dingye[2]

机构：[1]Univ Oxford, Inorgan Chem Lab, Wolfson Catalysis Ctr, Oxford OX1 2JD, England;[2]E China Univ Sci & Technol, Inst Chem Technol, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2007

卷号：86

期号：12-13

起止页码：1727

外文期刊名：FUEL

收录：;EI(收录号：20072110615684);WOS:【SCI-EXPANDED(收录号:WOS:000248880600006)】；

语种：英文

外文关键词：polylols reforming; hydrogen generation; thermodynamic calculations

摘要：This paper aims to study the thermodynamic features of polylols reforming to generate hydrogen gas. Polylols can be converted into carbon dioxide and hydrogen via aqueous reforming with co-existence of low level of carbon monoxide due to reverse water-gas-shift (R-WGS) reaction and subsequently, CO and/or CO2 and H-2 react to form CH4 via side reaction of methanation. Here Matlab language is employed to calculate the reaction heat, equilibrium constant and equilibrium molar fraction of each component through solving the non-linear equations. The calculation results suggest that the polylol reforming reaction is endothermic and but should be carried at low temperature to give very low level of CO content (dry basis) in the gas production. The results also demonstrate that low temperature favors the methanation, which should be limited kinetically during the operation. In addition, choosing system pressure slightly higher than the saturation water pressure is unfavorable to the R-WGS reaction but favorable to the low level of CO content, desirably. (c) 2006 Elsevier Ltd. All rights reserved.