Abstract
Abstract It was found that hydrogen could effectively be produced via methane steam reforming at 773 K by use of palladium membrane reactor. The used catalyst was for low-temperature steam reforming to produce methane from naphtha. The level of methane conversion depended on the efficiency of membrane for hydrogen permeation in the case where the rate of hydrogen production was large enough as in the present case. An excellent performance of hydrogen permeation was attained by a thin palladium-silver alloy membrane supported on porous alumina ceramics. Such membranes were prepared by successive deposition of palladium and silver films on the support, followed by thermal treatment above 1073 K.
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