Hydrogen production for fuel cell application in an autothermal micro-channel reactor

Hydrogen production via two-step thermochemical cycles over fluorite-structure ceria (CeO2) and ceria-zirconia (Ce0.75Zr0.25O2) materials was studied in packed-bed and micro-channel reactors for comparison purposes. The H2-temperature program reduction (H2-TPR) results indicated that the addition of Zr4+ enhanced the material’s reducibility from 585 µmol/g to 1700 µmol/g, although the reduction temperature increased from 545 to 680 °C. Ce0.75Zr0.25O2 was found to offer higher hydrogen productivity than CeO2 regardless of the type of reactor. The micro-channel reactor showed better performance than the packed-bed reactor for this reaction.

Download Full-text

Continuous flow synthesis of nanostructured bimetallic Pt-Mo/C catalysts in milli-channel reactor for PEM fuel cell application

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2019.121854 ◽

2019 ◽

Vol 237 ◽

pp. 121854 ◽

Cited By ~ 4

Author(s):

Sruthi R. Pillai ◽

Shirish H. Sonawane ◽

Sarang P. Gumfekar ◽

Prashant L. Suryawanshi ◽

Muthupandian Ashokkumar ◽

...

Keyword(s):

Fuel Cell ◽

Continuous Flow ◽

Pem Fuel Cell ◽

Channel Reactor ◽

Flow Synthesis ◽

Fuel Cell Application

Download Full-text

Hydrogen production by steam reforming of methanol in a micro-channel reactor coated with Cu/ZnO/ZrO2/Al2O3 catalyst

Journal of Power Sources ◽

10.1016/j.jpowsour.2005.11.095 ◽

2006 ◽

Vol 159 (2) ◽

pp. 1296-1299 ◽

Cited By ~ 72

Author(s):

Heondo Jeong ◽

Kweon Ill Kim ◽

Tae Hwan Kim ◽

Chang Hyun Ko ◽

Hwa Choon Park ◽

...

Keyword(s):

Hydrogen Production ◽

Steam Reforming ◽

Micro Channel ◽

Channel Reactor ◽

Steam Reforming Of Methanol ◽

Al2o3 Catalyst

Download Full-text

Autothermal Reforming of Ethanol for Hydrogen Production: Steady State Modeling

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.415.651 ◽

2013 ◽

Vol 415 ◽

pp. 651-657 ◽

Cited By ~ 3

Author(s):

Chananchai Wutthithanyawat ◽

Nawadee Srisiriwat

Keyword(s):

Steady State ◽

Fuel Cell ◽

Hydrogen Production ◽

Autothermal Reforming ◽

Adiabatic Temperature ◽

Efficient Production ◽

Operating Condition ◽

Molar Ratios ◽

Fuel Cell Application ◽

Production Of Hydrogen

As increasing hydrogen demand for fuel cell application is expected in the near future, the efficient production of hydrogen is vital enabling technology for commercialization of fuel cell for residences and automobiles. Among different technologies of hydrogen production, autothermal reforming is considered to be thermally self-sustaining that the external heat source is not required. In this work, a steady state modeling of autothermal reforming of ethanol for hydrogen production has been performed. Because the operating condition at adiabatic temperature is designed for autothermal reformer, the estimated function of adiabatic temperature as function of steam-to-carbon (S:C) and air-to-carbon (A:C) molar ratios can be determined. At autothermal condition, the effect of S:C and A:C ratios on the product distributions of hydrogen rich stream is thermodynamically investigated. At fixed reactor pressure of 1 bar and preheat temperature of 200 °C, the favorable operating condition for the autothermal reforming of ethanol is found to be a S:C ratio of 2.0 and an A:C ratio of 1.75 at adiabatic temperature of 639 °C.

Download Full-text