نتایج جستجو برای: steam reforming of methane

تعداد نتایج: 21170487  

Steam reforming integrated with oxidation of methanol was considered with numerical simulation. The parallel micro-channels with circular cross sections were used. Because when the catalytic deposited inside the rectangular micro-channels, it fills up the edges. Hence, the approximation of a cylindrical channel is appropriate. Effect of this changing in cross section was considered and results ...

Journal: :Catalysts 2023

In the present work, catalytic behavior of nickel-based catalysts supported on ceria/zirconia, undoped and doped with lanthanum neodymium (3.5Ni/Ce0.8La0.5Nd0.2Zr0.13O2−x), was investigated under different reactions: steam reforming, partial oxidation autothermal reforming fuels (methane, biogas, propane). The properties these were evaluated at a temperature 800 °C, atmospheric pressure, GSHV =...

Journal: :Journal of energy systems 2021

The co-generation facilities have maximal thermal efficiency. In the case of Russian Federation, for power production industry, development combined cycle (CCGT-CHP) is especially urgent. CCGT-CHP daily load schedule requires demand both electricity and heat, heat depends only upon ambient air temperature. gas turbine reduction subsequent steam during electric drop down are limited by necessity...

2001
Robert J. Evans Stefan Czernik Esteban Chornet Calvin J. Feik Richard French Steven D. Phillips

Renewable hydrogen may be produced in the near term at a cost that is competitive with natural gas reforming by integrating hydrogen production with existing industrial utilization of agricultural residues. A team of government, industrial, and academic organizations is developing a steam reforming process to be demonstrated on the gaseous byproducts from a process for making activated carbon f...

2002
Duane B. Myers Gregory D. Ariff Brian D. James John S. Lettow Reed C. Kuhn

This work was funded by the Hydrogen Program Office of the U.S. Department of Energy under Grant No. DE-FG01-99EE35099 and represents the second task of three to be completed under this contract. The first task presented a broad overview of the costs for creating infrastructures to supply direct hydrogen, methanol, and gasoline to support fuel cell vehicles (FCV’s). A conclusion of the report r...

Journal: :Catalysis Today 2021

Energy-efficient CH4-CO2 valorization to fuels and chemicals presents an urgent need considering the great variety of methane sources removal greenhouse gases. In present work, microwave-assisted dry reforming methane, DRM, has been carried out in a custom-designed rectangular mono-mode microwave applicator over several catalyst-support combinations, i.e., Pt/C, Ni/Al2O3, mechanical mixture Ni/...

2001
H. - J. Ziock

The Zero Emission Coal Alliance (ZECA) is developing an integrated zero emission process that will generate clean energy carriers (electricity or hydrogen) from coal. The process exothermically gasifies coal using hydrogen to produce a methane rich intermediate state. The methane is subsequently reformed using water and a CaO based sorbent. The sorbent supplies the energy needed to drive the re...

Journal: :Catalysis Today 2021

The combined dry-steam reforming (CDSR) of a model biogas (66 % CH4 + 34 CO2) has been investigated under various feed compositions and reaction temperature conditions over Ni-Rh/MgAl2O4 catalyst, with the objective to convert excess methane (compared by steam (SR). Methane, however, appeared react preferentially H2O rather than CO2, leading an inhibition dry (DR) in presence steam. CO2 adsorpt...

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