Hydrogen Production by Steam Reforming of Methanol over New Ag-Au(1-D)-CeO2 Catalyst

Au Nanowires

AbstractA Ag-Au(1-D)-CeO2 catalyst was prepared by precipitation method using Ag-Au nanowires and Ce(NO3)3·6H2O as precursors. The catalytic activity of the catalysts was evaluated in a steam reforming of methanol (SRM) reaction from 250 to 475 °C. 100 % of methanol conversion was observed at 450 °C together with high H2 selectivity. This study evidenced that the use of 1-D metallic nanostructures could be used as an active phase on a CeO2 matrix for steam reforming of methanol for H2 generation to be used as fuel.

The Performance of the Cu-Zn/CeO2 Catalysts in the Steam Reforming of Methanol Reaction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.324.157 ◽

2011 ◽

Vol 324 ◽

pp. 157-161 ◽

Cited By ~ 1

Author(s):

Mary Mrad ◽

Cédric Gennequin ◽

Antoine Aboukaïs ◽

Edmond Abi-Aad

Keyword(s):

Catalytic Activity ◽

Steam Reforming ◽

Conversion Rate ◽

Methanol Conversion ◽

Impregnation Method ◽

Copper Species ◽

Optimum Content

The performances of different xCu10Ce and xZn10Ce (x = 1, 3, and 5) catalysts prepared by impregnation method then pelletised, were investigated in the steam reforming of methanol (SRM) under a GHSV = 15500 h-1 with H2O/CH3OH = 2. The impregnation of copper over ceria supports shows better results than that of zinc. The catalytic activity in the Cu-based depends on the dispersion of the copper species. The methanol conversion rate is related to the formation of an optimum content of reduced copper species.

Hydrogen Production on Cu-Ni Catalysts via the Oxy-Steam Reforming of Methanol

Catalysts ◽

10.3390/catal10030273 ◽

2020 ◽

Vol 10 (3) ◽

pp. 273 ◽

Cited By ~ 2

Author(s):

Magdalena Mosinska ◽

Natalia Stępińska ◽

Waldemar Maniukiewicz ◽

Jacek Rogowski ◽

Agnieszka Mierczynska-Vasilev ◽

...

Keyword(s):

Hydrogen Production ◽

Physicochemical Properties ◽

Steam Reforming ◽

Catalytic Properties ◽

Active Phase ◽

Alloy Formation ◽

High Catalytic Activity ◽

Active System ◽

Ni Catalysts ◽

In this work, bimetallic Cu-Ni catalysts supported on binary oxides containing ZnO, ZrO2, CeO2 and Al2O3 were investigated in hydrogen production via the oxidative steam reforming of methanol (OSRM). Their physicochemical properties were extensively studied using various methods such as BET, TPR-H2, TPD-NH3, XRD, SEM-EDS, ToF-SIMS and XPS. The reactivity measurements showed that the active phase and support composition played an important role in the activity of the catalyst in the OSRM. The most active system at higher temperatures was 30% Cu–10% Ni/CeO2·Al2O3, with high catalytic activity attributed to the Cu0.8Ni0.2 alloy formation. In addition, the reactivity results showed that the most active catalyst exhibited high acidity and was easily reduced. At low temperatures, the best catalytic properties were exhibited by 30% Cu–10% Ni/ZrO2·Al2O3. The reactivity and physicochemical properties of the studied catalysts confirmed the crucial role of alloy composition on their catalytic properties in the oxy-steam reforming of methanol. The obtained results validate the possibility of using Cu-Ni catalysts for hydrogen production.

Hydrogen Production by Steam Reforming of Methanol over a Ag/ZnO One Dimensional Catalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.132.205 ◽

2010 ◽

Vol 132 ◽

pp. 205-219 ◽

Cited By ~ 19

Author(s):

Raul Pérez-Hernández ◽

A. Gutiérrez-Martínez ◽

Alvaro Mayoral ◽

F. Leonard Deepak ◽

Ma. E. Fernández-García ◽

...

Keyword(s):

Particle Size ◽

Catalytic Activity ◽

Steam Reforming ◽

Three Dimensional ◽

Methanol Conversion ◽

H2 Production ◽

One Dimensional ◽

Ag Particle

One dimensional (1-D) and three dimensional (3-D) ZnO were growth by a hydrothermal method. ZnO 1-D was employed as a support for silver nanoparticles in order to design a new catalyst and used on the steam reforming of methanol (SRM) reaction for H2 production. The catalytic activity of the Ag/ZnO sample with low content of Ag showed better performance on the SRM reaction than on high silver loading catalyst. So, the sample with small Ag particle size showed best performance in methanol conversion than catalyst with big Ag particle size, this finding could be attributed to the high ZnO/Ag ratio. According to results of SEM and TEM techniques the catalytic activity: methanol conversion, H2 and low CO production observed on the Ag/ZnO 1-D catalyst occurs in the edge sites rather than the rim sites. The role of Ag is to accept the hydrogen to be released to the gas phase. In addition, the 1.5Ag/ZnO 1-D catalyst showed good stability during the reaction.

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 ◽

10.1039/c6ra03858a ◽

2016 ◽

Vol 6 (62) ◽

pp. 57199-57209 ◽

Cited By ~ 23

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 ◽

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.

New technology for hydrogen production by the catalytic oxidation and steam reforming of methanol at low temperatures

Chemical Engineering & Technology ◽

10.1002/ceat.270180102 ◽

1995 ◽

Vol 18 (1) ◽

pp. 1-6 ◽

Cited By ~ 16

Author(s):

David L. Trimm ◽

Mark S. Wainwright

Keyword(s):

Hydrogen Production ◽

Catalytic Oxidation ◽

Steam Reforming ◽

Low Temperatures ◽

New Technology ◽

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

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2012.02.105 ◽

2012 ◽

Vol 37 (11) ◽

pp. 9018-9027 ◽

Cited By ~ 46

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 ◽

Reduction of Pd/ZnO Catalyst and Its Catalytic Activity for Steam Reforming of Methanol

Chinese Journal of Catalysis ◽

10.1016/s1872-2067(07)60021-7 ◽

2007 ◽

Vol 28 (3) ◽

pp. 234-238 ◽

Cited By ~ 24

Author(s):

Yanhua WANG ◽

Jingchang ZHANG ◽

Hengyong XU ◽

Xuefeng Bai

Keyword(s):

Catalytic Activity ◽

Steam Reforming ◽

ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B ◽

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

10.1115/fuelcell2006-97209 ◽

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 ◽

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.