CATALYTIC PROPERTIES OF WATER-GAS SHIFT MEMBRANES

摘要

The production of liquid fuels from carbonaceous materials is a process that may be a near- to mid-term source of domestic transportation fuels. However, the environmental impacts associated with the generation and emission of greenhouses gases from the gasification process remains a substantial concern. NETL has devoted substantial resources towards the identification of efficient hydrogen separation and carbon capture/sequestration technologies. Hydrogen membranes integrated into a water-gas shift membrane reactor have been identified as a promising means of maximizing the production of pure hydrogen while simultaneously yielding a high-pressure, concentrated CO2 containing stream ready for sequestration[1].. However, for this integration to be realized, viable membranes must be identified that exhibit the required permeability, selectivity, chemical resistance and mechanical stability. These palladium-copper alloy membranes have exhibited conversions of CO that met or exceeded the thermodynamic equilibrium value in a pure palladium reactor.