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- W2094098700 abstract "Hydrogen production by steam reforming of methane using catalytic membrane reactors was investigated first by simulation, then by experimentation. The membrane reactor simulation, using an isothermal and plug-flow model with selective permeation from reactant stream to permeate stream, was conducted to evaluate the effect of permselectivity on membrane reactor performance – such as methane conversion and hydrogen yield – at pressures as high as 1000 kPa. The simulation study, with a target for methane conversion of 0.8, showed that hydrogen yield and production rate have approximately the same dependency on operating conditions, such as reaction pressure, if the permeance ratio of hydrogen over nitrogen (α(H2/N2)) is larger than 100 and of H2 over H2O is larger than 15. Catalytic membrane reactors, consisting of a microporous Ni-doped SiO2 top layer and a catalytic support, were prepared and applied experimentally for steam reforming of methane at 500 °C. A bimodal catalytic support, which allows large diffusivity and high dispersion of the metal catalyst, was prepared for the enhancement of membrane catalytic activity. Catalytic membranes having H2 permeances in the range of 2–5 × 10−6 m3 m−2 s−1 kPa−1, with H2/N2 of 25–500 and H2/H2O of 6–15, were examined for steam reforming of methane. Increased performance for the production of hydrogen was experimentally obtained with an increase in reaction-side pressure (as high as 500 kPa), which agreed with the theoretical simulation with no fitting parameters." @default.
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- W2094098700 date "2008-05-01" @default.
- W2094098700 modified "2023-09-26" @default.
- W2094098700 title "Membrane reactor performance of steam reforming of methane using hydrogen-permselective catalytic SiO2 membranes" @default.
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- W2094098700 doi "https://doi.org/10.1016/j.memsci.2007.10.057" @default.
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