Effect of Support Particle Size in Steam Reforming of Ethanol over Co/CeO2 Catalysts

ACS Catalysis ◽  
2012 ◽  
Vol 2 (11) ◽  
pp. 2335-2348 ◽  
Author(s):  
I. Ilgaz Soykal ◽  
Hyuntae Sohn ◽  
Umit S. Ozkan
Keyword(s):  
Particle Size ◽  
Steam Reforming ◽  
Steam Reforming Of Ethanol ◽  
Support Particle ◽  
Effect Of Support

The effect of support reducibility on the stability of Co/CeO2 for the oxidative steam reforming of ethanol

2011 ◽  
Vol 164 (1) ◽  
pp. 234-239 ◽  
Author(s):  
Adriana M. da Silva ◽  
Kátia Regina de Souza ◽  
Lisiane V. Mattos ◽  
Gary Jacobs ◽  
Burtron H. Davis ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Steam Reforming Of Ethanol ◽  
The Stability ◽  
Effect Of Support

Steam reforming of ethanol over Ni/ZrO2 catalysts: Effect of support on product distribution

2012 ◽  
Vol 37 (3) ◽  
pp. 2940-2949 ◽  
Author(s):  
Shuirong Li ◽  
Maoshuai Li ◽  
Chengxi Zhang ◽  
Shengping Wang ◽  
Xinbin Ma ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Product Distribution ◽  
Steam Reforming Of Ethanol ◽  
Effect Of Support

Hydrogen production by steam reforming of ethanol over Ni/Al 2 O 3 -La 2 O 3 xerogel catalysts

2017 ◽  
Vol 434 ◽  
pp. 123-133 ◽  
Author(s):  
Ji Hwan Song ◽  
Sangbeom Yoo ◽  
Jaekyeong Yoo ◽  
Seungwon Park ◽  
Min Yeong Gim ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Steam Reforming Of Ethanol

Physical-Chemical and Thermodynamic Analyses of Ethanol Steam Reforming for Hydrogen Production

2006 ◽  
Vol 3 (3) ◽  
pp. 346-350 ◽  
Author(s):  
Antonio Carlos Caetano de Souza ◽  
José Luz-Silveira ◽  
Maria Isabel Sosa
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Production Efficiency ◽  
Physical Chemical ◽  
Steam Reforming Of Ethanol ◽  
Thermodynamic Conditions ◽  
High Production ◽  
Exergetic Analysis ◽  
Global Reaction ◽  
Technical Features

Steam reforming is the most usual method of hydrogen production due to its high production efficiency and technological maturity. The use of ethanol for this purpose is an interesting option because it is a renewable and environmentally friendly fuel. The objective of this article is to present the physical-chemical, thermodynamic, and exergetic analysis of a steam reformer of ethanol, in order to produce 0.7Nm3∕h of hydrogen as feedstock of a 1kW PEMFC. The global reaction of ethanol is considered. Superheated ethanol reacts with steam at high temperatures producing hydrogen and carbon dioxide, depending strongly on the thermodynamic conditions of reforming, as well as on the technical features of the reformer system and catalysts. The thermodynamic analysis shows the feasibility of this reaction in temperatures about 206°C. Below this temperature, the reaction trends to the reactants. The advance degree increases with temperature and decreases with pressure. Optimal temperatures range between 600 and 700°C. However, when the temperature attains 700°C, the reaction stability occurs, that is, the hydrogen production attains the limit. For temperatures above 700°C, the heat use is very high, involving high costs of production due to the higher volume of fuel or electricity used. The optimal pressure is 1atm., e.g., at atmospheric pressure. The exergetic analysis shows that the lower irreversibility is attained for lower pressures. However, the temperature changes do not affect significantly the irreversibilities. This analysis shows that the best thermodynamic conditions for steam reforming of ethanol are the same conditions suggested in the physical-chemical analysis.

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