Kinetic modeling of steam reforming of ethanol for the production of hydrogen over Co/Al2O3 catalyst

2007 ◽  
Vol 125 (3) ◽  
pp. 139-147 ◽  
Author(s):  
D SAHOO ◽  
S VAJPAI ◽  
S PATEL ◽  
K PANT
Keyword(s):  
Kinetic Modeling ◽  
Steam Reforming ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen ◽  
Al2o3 Catalyst

Oxidative steam reforming of ethanol over a Pt/Al2O3 catalyst in a Pd-based membrane reactor

2011 ◽  
Vol 36 (2) ◽  
pp. 1503-1511 ◽  
Author(s):  
Alessia Santucci ◽  
Maria Cristina Annesini ◽  
Fabio Borgognoni ◽  
Luigi Marrelli ◽  
Martina Rega ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Membrane Reactor ◽  
Steam Reforming Of Ethanol ◽  
Al2o3 Catalyst

scholarly journals Sustainable Production of Hydrogen by Steam Reforming of Ethanol Using Cobalt Supported on Nanoporous Zeolitic Material

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1934
Author(s):  
Javier Francisco da Costa-Serra ◽  
Maria Teresa Navarro ◽  
Fernando Rey ◽  
Antonio Chica
Keyword(s):  
Steam Reforming ◽  
Zeolite Y ◽  
Cobalt Catalysts ◽  
Coke Deposition ◽  
Bet Surface Area ◽  
Ethanol Conversion ◽  
Y Zeolite ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen ◽  
Hydrogen Selectivity

Cobalt catalysts supported on Y zeolite and mesoporized Y zeolite (Y-mod) have been studied in steam reforming of ethanol (SRE). Specifically, the effect of the mesoporosity and the acidity of the y zeolite as a support has been explored. Mesoporous were generated on Y zeolite by treatment with NH4F and the acidity was neutralized by Na incorporation. Four cobalt catalysts supported on Y zeolite have been prepared, two using Y zeolite without mesoporous (Co/Y, Co/Y-Na), and two using Y zeolite with mesoporous (Co/Y-mod and Co/Y-mod-Na). All catalysts showed a high activity, with ethanol conversion values close to 100%. The main differences were found in the distribution of the reaction products. Co/Y and Co/Y-mod catalysts showed high selectivity to ethylene and low hydrogen production, which was explained by their high acidity. On the contrary, neutralization of the acid sites could explain the higher hydrogen selectivity and the lower ethylene yields exhibited by the Co/Y-Na and Co/Y-mod-Na. In addition, the physicochemical characterization of these catalysts by XRD, BET surface area, temperature-programmed reduction (TPR), and TEM allowed to connect the presence of mesoporous with the formation of metallic cobalt particles with small size, high dispersion, and with high interaction with the zeolitic support, explaining the high reforming activity exhibited by the co/y-mod-Na sample as well as its higher hydrogen selectivity. It has been also observed that the formation of coke is affected by the presence of mesoporous and acidity. Both properties seem to have an opposite effect on the reforming catalyst, decreasing and increasing the coke deposition, respectively.

Hydrogen production by steam reforming of ethanol over dual-templated Ni–Al2O3 catalyst

2016 ◽  
Vol 265 ◽  
pp. 103-110 ◽  
Author(s):  
Seung Ju Han ◽  
Yongju Bang ◽  
Ji Hwan Song ◽  
Jaekyeong Yoo ◽  
Seungwon Park ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Steam Reforming Of Ethanol ◽  
Al2o3 Catalyst
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