Production of hydrogen by ethanol steam reforming using Ni–Co-ex-hydrotalcite catalysts stabilized with tungsten oxides

2020 ◽  
Author(s):  
José L. Contreras ◽  
Anabel Figueroa ◽  
Beatriz Zeifert ◽  
José Salmones ◽  
Gustavo A. Fuentes ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Tungsten Oxides ◽  
Production Of Hydrogen ◽  
Ethanol Steam

Co-production of hydrogen and carbon nanotube-silica fiber composites from ethanol steam reforming over an Ni-silica fiber catalyst

2017 ◽  
Vol 148 (7) ◽  
pp. 1311-1321 ◽  
Author(s):  
Natthawan Prasongthum ◽  
Chaiyan Chaiya ◽  
Chanatip Samart ◽  
Guoqing Guan ◽  
Paweesuda Natewong ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Steam Reforming ◽  
Fiber Composites ◽  
Silica Fiber ◽  
Ethanol Steam Reforming ◽  
Production Of Hydrogen ◽  
Ethanol Steam

Efficient Production of Hydrogen over Supported Cobalt Catalysts from Ethanol Steam Reforming

2002 ◽  
Vol 209 (2) ◽  
pp. 306-317 ◽  
Author(s):  
Jordi Llorca ◽  
Narcı́s Homs ◽  
Joaquim Sales ◽  
Pilar Ramı́rez de la Piscina
Keyword(s):  
Steam Reforming ◽  
Cobalt Catalysts ◽  
Ethanol Steam Reforming ◽  
Efficient Production ◽  
Production Of Hydrogen ◽  
Supported Cobalt Catalysts ◽  
Ethanol Steam

Production of Hydrogen from Ethanol Using Pt/Hydrotalcite Catalysts Stabilized with Tungsten Oxides

2012 ◽  
Vol 15 (3) ◽  
pp. 215-223 ◽  
Author(s):  
J.L. Contreras ◽  
M.A. Ortiz ◽  
R. Luna ◽  
G.A. Fuentes ◽  
M. Autié ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Steam Reforming ◽  
Fixed Bed ◽  
Thermal Stabilization ◽  
Fixed Bed Reactor ◽  
Ethanol Steam Reforming ◽  
Vis Spectroscopy ◽  
Production Of Hydrogen ◽  
Stabilization Effect ◽  
Ethanol Steam

An stabilization effect of WOx over the Pt/hydrotalcite catalysts to produce H2 by ethanol steam reforming at low concentration was studied. The catalysts were characterized by N2 physisorption, X-ray diffraction, Infrared (IR), and UV-vis spectroscopy. The catalytic tests were made in a fixed bed reactor. The catalysts showed porous with the shape of parallel layers with a monomodal mesoporous distribution. By IR spectroscopy it was found superficial chemical such as: -OH, H2O, Al-OH, Mg-OH, and CO32-. The reaction products were; H2, CO2, CH3CHO, CH4 and C2H4. These catalysts did not produce CO and showed low selectivity to C2H4. By XRD we found that catalysts having Pt and the lowest W concentration showed the highest crystallinity and the highest stability during the reaction of ethanol steam reforming. A possible thermal stabilization effect of W in the hydrotalcite crystal structure leading to prevent the Pt sintering is proposed. By IR the hydrotalcite hydroxil groups coordinated with Mg and Al decreased by the presence of WOx. We found that catalysts with low W concentration and Pt having high crystallinity showed the highest stability after ethanol steam reforming. It could be a possible thermal stabilization effect of W in the hydrotalcite crystal structure leading to prevent the Pt sintering.

scholarly journals Production of Hydrogen from Ethanol Steam Reforming Over Ni-Mn/La2O3-ZrO2 Cat

2014 ◽  
Vol 26 (2) ◽  
pp. 383-388 ◽  
Author(s):  
Hongda Wu ◽  
Yu Yin ◽  
Hanzhi Liu ◽  
Tianshi Liu ◽  
Lue Zhao
Keyword(s):  
Steam Reforming ◽  
Ethanol Steam Reforming ◽  
Production Of Hydrogen ◽  
Ethanol Steam
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