Steam reforming of ethanol for production of hydrogen over Ni/CeO22–ZrO22 catalyst: Effect of support and metal loading

2007 ◽  
Vol 32 (8) ◽  
pp. 969-980 ◽  
Author(s):  
P BISWAS ◽  
D KUNZRU
Keyword(s):  
Steam Reforming ◽  
Metal Loading ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen ◽  
Effect Of Support ◽  
Catalyst Effect

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.

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

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

Production of hydrogen for MC fuel cell by steam reforming of ethanol over MgO supported Ni and Co catalysts

2003 ◽  
Vol 4 (6) ◽  
pp. 259-268 ◽  
Author(s):  
S. Freni ◽  
S. Cavallaro ◽  
N. Mondello ◽  
L. Spadaro ◽  
F. Frusteri
Keyword(s):  
Fuel Cell ◽  
Steam Reforming ◽  
Co Catalysts ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen ◽  
Supported Ni

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

scholarly journals A highly efficient and stable Ni/SBA-15 catalyst for hydrogen production by ethanol steam reforming

2020 ◽  
Vol 45 ◽  
pp. 146867831989184
Author(s):  
Xia An ◽  
Jia Ren ◽  
Weitao Hu ◽  
Xu Wu ◽  
Xianmei Xie
Keyword(s):  
Steam Reforming ◽  
Photoelectron Spectroscopy ◽  
Nickel Nitrate ◽  
Molar Ratio ◽  
Linear Regression Method ◽  
Impregnation Method ◽  
X Ray ◽  
Nickel Sulfamate ◽  
Steam Reforming Of Ethanol ◽  
Production Of Hydrogen

The production of hydrogen by steam reforming of ethanol was carried out on SBA-15-supported nano NiO catalyst synthesized by the equivalent-volume impregnation method with two different Ni sources (nickel nitrate and nickel sulfamate). The catalyst was characterized by N2 adsorption–desorption, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy to examine the physical and chemical properties. The activity tests were performed with the steam, with water/ethanol molar ratio ranging from 2:1 to 15:1, the N2 flow rate from 20 to 120 mL min−1 to determine the space-time, and the temperature range from 623 to 923 K on the two different Ni source catalysts. A favorable operating condition was established at 823 K using water/ethanol = 6 molar ratio and carrier gas (N2) flow of more than 50 mL min−1 for nickel nitrate source, but for nickel sulfamate source, the optimum temperature changed to 773 K and other conditions were the same as for the nickel nitrate source. After eliminating the influence of internal and external diffusion factors, an empirical power-law kinetic rate equation was derived from the experimental data. The non-linear regression method was used to estimate the kinetic parameter. The activation energy of the catalyst was then calculated, and the supported nickel nitrate and nickel sulfamate catalysts were 25.345 and 41.449 kJ mol−1, respectively, which was in agreement with the experimental and model-predicted results.

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