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Hydrogen permeation

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The hydrogen flux in palladium membranes acquired from different vendors has been measured as a function of membrane thickness, temperature and feed (pure H2)... rate-controlling processes: bulk diffusion at high temperatures and surface phenomena at low temperatures. Keywords: Palladium membrane; Hydrogen permeation; Phase transition 1. Introduction 2. Procedure The palladium–hydrogen system is one of the most widely studied and significant solid–ga ...
Desalination 147 (2002)

In this study, hydrogen selective membranes have been fabricated using microsystem technology. A 750 nm dense layer of Pd (77 wt%) and Ag (23 wt%) is deposited on a non... and have a low resistance to mass transfer in the gas phase, as virtually no support layer is present. The membranes have been tested in a gas permeation system to determine the hydrogen permeability as a function of temperature, gas flow rate, and feed composition. In addition, the hydrogen ...
Desalination 147 (2002)

Amorphous alloy membranes are anticipated as substitutes for expensive palladium membranes. Hydrogen separation modules consisting of four amorphous Zr36Ni64 membranes have been developed to demonstrate their practical usefulness. First, surface... was assembled without leakage for 0.92 MPa inside to the atmospheric outside. Using this module, pure hydrogen was obtained as effluent from the permeation side. The 82.7% recovery and 31.7 mL (STP)/min were attained in separation from CO and CO2 containing a gas mixture simulating methanol reforme ...
Desalination 234 (2008)

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