Thermodynamic analysis of carbon dioxide reforming of methane and its practical relevance

被引:96
作者
Jafarbegloo, Mohammad [1 ]
Tarlani, Aliakbar [1 ]
Mesbah, A. Wahid [1 ]
Sahebdelfar, Saeed
机构
[1] Chem & Chem Engn Res Ctr Iran, Tehran, Iran
关键词
Dry reforming; Steam reforming; Water gas-shift; Coke formation; Approach to equilibrium; NATURAL-GAS; CONVERSION; CATALYSTS; SUPPORT; NICKEL;
D O I
10.1016/j.ijhydene.2014.12.103
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
Thermodynamic equilibrium analysis of reforming of methane with carbon dioxide (dry reforming) and in combination with steam reforming (mixed reforming) was performed using constrained Gibbs free energy minimization method. The results were compared with that of a commercial plant reactor and our experimental data over Ni/MgO catalysts tested in a fixed-bed quartz reactor. It was concluded equilibrium values are good measures of reaction performance and could be used for prediction of reaction performance and coke formation studies. Numerical values 1.02 and 1.96 were obtained for approach to equilibrium of carbon dioxide reforming and steam reforming reactions, respectively, at 850 degrees C and space velocity of 530 ml/h.g(cat). These values illustrated that, during dry reforming; first carbon dioxide reforming equilibrates, and then steam reforming reaction approaches to equilibrium in the reverse direction. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:2445 / 2451
页数:7
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