Hydrogen production by autothermal reforming of LPG for PEM fuel cell applications

2008 ◽  
Vol 33 (4) ◽  
pp. 1383-1391 ◽  
Author(s):  
Feyza Gökaliler ◽  
Burcu Selen Çağlayan ◽  
Z. İlsen Önsan ◽  
A. Erhan Aksoylu
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Pem Fuel Cell ◽  
Autothermal Reforming

Theoretical Analysis on the Autothermal Reforming Process of Ethanol as Fuel for a Proton Exchange Membrane Fuel Cell System

2006 ◽  
Vol 4 (4) ◽  
pp. 468-473 ◽  
Author(s):  
Alessandra Perna
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Cell System ◽  
Autothermal Reforming ◽  
Proton Exchange ◽  
Operating Conditions ◽  
Hydrogen Yield ◽  
Fuel Cell System ◽  
Exchange Membrane

The purpose of this work is to investigate, by a thermodynamic analysis, the effects of the process variables on the performance of an autothermal reforming (ATR)-based fuel processor, operating on ethanol as fuel, integrated into an overall proton exchange membrane (PEM) fuel cell system. This analysis has been carried out finding the better operating conditions to maximize hydrogen yield and to minimize CO carbon monoxide production. In order to evaluate the overall efficiency of the system, PEM fuel cell operations have been analyzed by an available parametric model.

Design of Mg-Cu alloys for fast hydrogen production, and its application to PEM fuel cell

2018 ◽  
Vol 741 ◽  
pp. 590-596 ◽  
Author(s):  
SeKwon Oh ◽  
HyoWon Kim ◽  
MinJoong Kim ◽  
KwangSup Eom ◽  
JoonSeok Kyung ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Pem Fuel Cell ◽  
Cu Alloys

scholarly journals Electrochemical Hydrogen Production Using Separated-Gas Cells for Soybean Oil Hydrogenation

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 832
Author(s):  
Jorge Eduardo Esquerre Verastegui ◽  
Marco Antonio Zamora Antuñano ◽  
Juvenal Rodríguez Resendiz ◽  
Raul García García ◽  
Pedro Jacinto Paramo Kañetas ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Soybean Oil ◽  
Constant Temperature ◽  
Pem Fuel Cell ◽  
Electrochemical Process ◽  
Second Stage ◽  
Abundant Element ◽  
Hydrogenated Soybean Oil ◽  
The Universe

Although hydrogen is the most abundant element in the universe, it is not possible to find it in its purest state in nature. In this study, two-stage experimentation was carried out. The first stage was hydrogen production. The second stage was an electrochemical process to hydrogenate soybean oil in a PEM fuel cell. In the fist stage a Zirfon Perl UTP 500 membrane was used in an alkaline hydrolizer of separated gas to produce hydrogen, achieving 9.6 L/min compared with 5.1 L/min, the maximum obtained using a conventional membrane. The hydrogen obtained was used in the second stage to feed the fuel cell hydrogenating the soybean oil. Hydrogenated soybean oil showed a substantial diminished iodine index from 131 to 54.85, which represents a percentage of 58.13. This happens when applying a voltage of 90 mV for 240 min, constant temperature of 50 °C and one atm. This result was obtained by depositing 1 mg of Pt/cm 2 in the cathode of the fuel cell. This system represents a viable alternative for the use of hydrogen in energy generation.

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.

Dynamic Modeling and Control Issues on a Methanol Reforming Unit for Hydrogen Production and Use in a PEM Fuel Cell

2009 ◽  
Vol 42 (11) ◽  
pp. 822-827 ◽  
Author(s):  
Dimitris Ipsakis ◽  
Spyros Voutetakis ◽  
Panos Seferlis ◽  
Simira Papadopoulou
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Dynamic Modeling ◽  
Pem Fuel Cell ◽  
Methanol Reforming ◽  
Modeling And Control ◽  
And Control

Thermodynamic study of hydrogen production from crude glycerol autothermal reforming for fuel cell applications

2010 ◽  
Vol 35 (13) ◽  
pp. 6617-6623 ◽  
Author(s):  
Suthida Authayanun ◽  
Amornchai Arpornwichanop ◽  
Woranee Paengjuntuek ◽  
Suttichai Assabumrungrat
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Crude Glycerol ◽  
Autothermal Reforming ◽  
Thermodynamic Study

Numerical Simulation of an Axisymmetric Ethanol Reforming Reactor for Hydrogen Fuel Cell Applications

2006 ◽  
Author(s):  
Gregory A. Buck ◽  
Hiroyuki Obara
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Autothermal Reforming ◽  
Great Promise ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Gaseous State ◽  
Ethanol Reforming ◽  
Wide Range ◽  
Production Of Hydrogen

Hydrogen fuel cell technology is currently capable of providing adequate power for a wide range of stationary and mobile applications. Nonetheless, the sustainability of this technology rests upon the production of hydrogen from renewable resources. Among the techniques under current study, the chemical reforming of alcohols and other bio-hydrocarbon fuels, appears to offer great promise. In the so called autothermal reforming process, a suitable combination of total and partial oxidation supports hydrogen production from ethanol with no external addition of energy required. Furthermore, the autothermal reforming process conducted in a well insulated reactor, produces temperatures that promote additional hydrogen production through the endothermic steam reforming and the water-gas shift reactions, which may be catalyzed or uncatalyzed, with the added benefit of lowered carbon monoxide concentrations. In this study, an adiabatic ethanol reforming reactor was simulated assuming the reactants to be air (21% O2 and 79% N2) and ethanol (C2H5OH) and the products to be H2O, CO2, CO and H2, with all constituents taken to be in the gaseous state. The air was introduced uniformly through a ring around the side of the reactor and the gaseous ethanol was injected into the center of one end, with products withdrawn from the center of the opposite end, to create an axisymmetric flow field. The gas flows within the reactor were assumed to be turbulent, and the chemical kinetics of a simple four reaction system was assumed to be controlled by turbulent mixing processes. Air and fuel flow rates into the reactor were varied to obtain six different levels of oxidation (air-fuel ratios) while maintaining the same total gaseous mass flow out of the reactor. The numerical results for the reacting flow show that hydrogen production is maximized when the air-fuel ratio on a mass basis is held at approximately 2.8. These findings are in qualitative agreement with observations from previous experimental studies.

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