A method for separating a
hydrogen-rich product
stream from a feed
stream comprising
hydrogen and at least one carbon-containing gas, comprising feeding the feed
stream, at an
inlet pressure greater than
atmospheric pressure and a temperature greater than 200° C., to a
hydrogen separation membrane
system comprising a membrane that is selectively permeable to hydrogen, and producing a hydrogen-rich permeate product stream on the permeate side of the membrane and a
carbon dioxide-rich product
raffinate stream on the
raffinate side of the membrane. A method for separating a hydrogen-rich product stream from a feed stream comprising hydrogen and at least one carbon-containing gas, comprising feeding the feed stream, at an
inlet pressure greater than
atmospheric pressure and a temperature greater than 200° C., to an integrated
water gas shift / hydrogen separation membrane
system wherein the hydrogen separation membrane
system comprises a membrane that is selectively permeable to hydrogen, and producing a hydrogen-rich permeate product stream on the permeate side of the membrane and a
carbon dioxide-rich product
raffinate stream on the raffinate side of the membrane. A method for pretreating a membrane, comprising: heating the membrane to a desired
operating temperature and desired
feed pressure in a flow of
inert gas for a
sufficient time to cause the membrane to mechanically deform; decreasing the
feed pressure to approximately
ambient pressure; and optionally, flowing an
oxidizing agent across the membrane before, during, or after deformation of the membrane. A method of supporting a hydrogen separation membrane system comprising selecting a hydrogen separation membrane system comprising one or more catalyst outer
layers deposited on a
hydrogen transport membrane layer and sealing the hydrogen separation membrane system to a porous support.