Publication

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

Albert Renken, Pierre Reuse
2004
Journal Articles

Abstract

Results concerning the coupling of the steam reforming and total oxidn. of methanol in a two-passage reactor are presented. A com. available copper-based catalyst is used for the steam reforming. For the total oxidn., a highly active cobalt oxide catalyst was developed. Both catalysts are used in form of thin layers immobilized on the wall of the microchannels. Reactor design and operating conditions are based on kinetic models developed under isothermal conditions in microstructured reactors. For the oxidn. reaction, complete conversion of methanol (>99%) at temps. >250 Deg is obsd. For the steam reforming, the hydrogen and CO2 selectivity is >96% for methanol conversion up to 90%. Besides the steady state, the dynamic behavior of the coupled system is studied. It is shown that the transient behavior is mainly detd. by the thermal inertia of the system. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/f150b8c6-fed3-4de3-a129-55c2b9a84e75

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Albert Renken, Pierre Reuse
2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f150b8c6-fed3-4de3-a129-55c2b9a84e75

About this result

Related concepts (32)

Hydrogen production

Hydrogen production is the family of industrial methods for generating hydrogen gas. As of 2020, the majority of hydrogen (~95%) is produced from fossil fuels by steam reforming of natural gas and other light hydrocarbons, partial oxidation of heavier hydrocarbons, and coal gasification. Other methods of hydrogen production include biomass gasification, methane pyrolysis, and electrolysis of water. Methane pyrolysis and water electrolysis can use any source of electricity including solar power.

Nuclear reactor

A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating.

Hydrogen economy

The hydrogen economy uses hydrogen to decarbonize economic sectors which are hard to electrify, essentially, the "hard-to-abate" sectors such as cement, steel, long-haul transport, etc. In order to phase out fossil fuels and limit climate change, hydrogen can be created from water using renewable sources such as wind and solar, and its combustion only releases water vapor into the atmosphere. Although with a very low volumetric energy density hydrogen is an energetic fuel, frequently used as rocket fuel, but numerous technical challenges prevent the creation of a large-scale hydrogen economy.

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

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