Research progress on preparation and properties of V/Nb-based alloy hydrogen separation membranes
At present,the development of renewable energy has become an important part of the global sustain-able energy strategy.Hydrogen is the cleanest energy in the world and is considered to be the most promising alternative energy.Industrial hydrogen production contains a large number of impurities.Therefore,the purifi-cation of hydrogen is an indispensable part of the use of hydrogen energy.Palladium and its alloy membranes are the most common materials for hydrogen separation,but they are too expensive and insufficient in yield.We need to find new hydrogen separation membranes with excellent performance.It is found that the hydrogen per-meability coefficient of V/Nb and its alloy membranes is much larger than that of Pd,and the cost is lower than that of Pd metal,which is the best hydrogen separation membrane material to replace Pd metal.At present,there are many studies on V/Nb-based alloy membranes.This paper introduces the principle of hydrogen perme-ation of alloy membranes,the preparation methods of hydrogen separation membranes and their advantages and disadvantages,as well as the research status of V/Nb-based alloys in recent years,and looks forward to the fu-ture research and development trend of hydrogen separation membranes.
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