Hydrogen Production by Steam Reforming of Methanol

2004 ◽  
Vol 37 (2) ◽  
pp. 286-293 ◽  
Author(s):  
Nobuhiro Iwasa ◽  
Wataru Nomura ◽  
Tomoyuki Mayanagi ◽  
Shin-ichiro Fujita ◽  
Masahiko Arai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Steam Reforming Of Methanol

Synthesis of CuO/ZnO/Al2O3/ZrO2/CeO2 nanocatalysts via homogeneous precipitation and combustion methods used in methanol steam reforming for fuel cell grade hydrogen production

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57199-57209 ◽  
Author(s):  
Saeed Khajeh Talkhoncheh ◽  
Mohammad Haghighi ◽  
Shahab Minaei ◽  
Hossein Ajamein ◽  
Mozaffar Abdollahifar
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Synthesis Method ◽  
Methanol Steam Reforming ◽  
Homogeneous Precipitation ◽  
Steam Reforming Of Methanol

In this research the effects of synthesis method and CeO2 and ZrO2 promoters were studied in the steam reforming of methanol over a CuO/ZnO/Al2O3 nanocatalyst. Addition of ZrO2 and CeO2 reduces CO selectivity, while CeO2 is more effective.

Hydrogen production from oxidative steam reforming of methanol: Effect of the Cu and Ni impregnation on ZrO2 and their molecular simulation studies

2012 ◽  
Vol 37 (11) ◽  
pp. 9018-9027 ◽  
Author(s):  
P. López ◽  
G. Mondragón-Galicia ◽  
M.E. Espinosa-Pesqueira ◽  
D. Mendoza-Anaya ◽  
Ma.E. Fernández ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Molecular Simulation ◽  
Steam Reforming ◽  
Simulation Studies ◽  
Steam Reforming Of Methanol

Hydrogen Production for PEM Fuel Cells via Oxidative Steam Reforming of Methanol Using Cu-Al Catalysts Modified With Ce and Cr

2006 ◽  
Author(s):  
Sanjay Patel ◽  
K. K. Pant
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Surface Area ◽  
Steam Reforming ◽  
Pem Fuel Cell ◽  
Oxide Catalysts ◽  
Molar Ratio ◽  
X Ray ◽  
Steam Reforming Of Methanol ◽  
Al Oxide

The performance of Cu-Ce-Al-oxide and Cu-Cr-Al-oxide catalysts of varying compositions prepared by co-precipitation method was evaluated for the PEM fuel cell grade hydrogen production via oxidative steam reforming of methanol (OSRM). The limitations of partial oxidation and steam reforming of methanol for the hydrogen production for PEM fuel cell could be overcome using OSRM and can be performed auto-thermally with idealized reaction stoichiomatry. Catalysts surface area and pore volume were determined using N2 adsorption-desorption method. The final elemental compositions were determined using atomic absorption spectroscopy. Crystalline phases of catalyst samples were determined by X-ray diffraction (XRD) technique. Temperature programmed reduction (TPR) demonstrated that the incorporation of Ce improved the copper reducibility significantly compared to Cr promoter. The OSRM was carried out in a fixed bed catalytic reactor. Reaction temperature, contact-time (W/F) and oxygen to methanol (O/M) molar ratio varied from 200–300°C, 3–21 kgcat s mol−1 and 0–0.5 respectively. The steam to methanol (S/M) molar ratio = 1.4 and pressure = 1 atm were kept constant. Catalyst Cu-Ce-Al:30-10-60 exhibited 100% methanol conversion and 152 mmol s−1 kgcat−1 hydrogen production rate at 300°C with carbon monoxide formation as low as 1300 ppm, which reduces the load on preferential oxidation of CO to CO2 (PROX) significantly before feeding the hydrogen rich stream to the PEM fuel cell as a feed. The higher catalytic performance of Ce containing catalysts was attributed to the improved Cu reducibility, higher surface area, and better copper dispersion. Reaction parameters were optimized in order to maximize the hydrogen production and to keep the CO formation as low as possible. The time-on-stream stability test showed that the Cu-Ce-Al-oxide catalysts subjected to a moderate deactivation compared to Cu-Cr-Al-oxide catalysts. The amount of carbon deposited onto the catalysts was determined using TG/DTA thermogravimetric analyzer. C1s spectra were obtained by surface analysis of post reaction catalysts using X-ray photoelectron spectroscopy (XPS) to investigate the nature of coke deposited.

scholarly journals Methanol as a High Purity Hydrogen Source for Fuel Cells: A Brief Review of Catalysts and Rate Expressions

2017 ◽  
Vol 38 (1) ◽  
pp. 147-162 ◽  
Author(s):  
Maria Madej-Lachowska ◽  
Maria Kulawska ◽  
Jerzy Słoczyński
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cells ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Kinetic Equations ◽  
Environmental Benefits ◽  
Production Methods ◽  
Steam Reforming Of Methanol ◽  
Fuel Source ◽  
Oxidation Of Carbon Monoxide

Abstract Hydrogen is the fuel of the future, therefore many hydrogen production methods are developed. At present, fuel cells are of great interest due to their energy efficiency and environmental benefits. A brief review of effective formation methods of hydrogen was conducted. It seems that hydrogen from steam reforming of methanol process is the best fuel source to be applied in fuel cells. In this process Cu-based complex catalysts proved to be the best. In presented work kinetic equations from available literature and catalysts are reported. However, hydrogen produced even in the presence of the most selective catalysts in this process is not pure enough for fuel cells and should be purified from CO. Currently, catalysts for hydrogen production are not sufficiently active in oxidation of carbon monoxide. A simple and effective method to lower CO level and obtain clean H2 is the preferential oxidation of monoxide carbon (CO-PROX). Over new CO-PROX catalysts the level of carbon monoxide can be lowered to a sufficient level of 10 ppm.

Sign in / Sign up

Export Citation Format

Share Document