Hydrogen Production and Purification

Dear Colleagues,

Environmental problems encourage humanity to switch to a new energy strategy. One of its main trends is the shift to renewable energy sources. An important part of this strategy is the development of hydrogen energy. Currently, most hydrogen is produced from natural gas and coal, which results in the formation of carbon oxides, primarily CO as co-products. However, even traces of CO poison the catalysts of low-temperature fuel cells, which currently dominate the world market. This necessitates deep hydrogen purification before its use. Such purification is also necessary for the hydrogen production from renewable feedstocks, biomass or bio-alcohols, the conversion of which takes place at lower temperatures and is more selective with respect to CO₂. Various types of membranes can be used for hydrogen purification, but membranes based on palladium alloys are most effective for deep purification. At the same time, the issue of production of cheaper and high-performance membranes, in which palladium alloys are represented only by a thin catalytic layer, is relevant.

An effective approach is the use of membrane catalysis for hydrogen production, which not only leads to the production of high-purity hydrogen in one stage, but also leads to an increase in the hydrogen yield due to a shift in thermodynamic equilibrium.

This Special Issue will contain articles on the processes of hydrogen production or purification.

Prof. Dr. Andrey B. Yaroslavtsev
Dr. Iliya Petriev
Guest Editors

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