ABSTRACT
Long-term exploitation of fossil fuels is considered to be unsustainable due to their limited availability and the increasing emissions of greenhouse gases that are considered to be responsible for environmental pollution and climate change. Among the future energy scenarios, the use of hydrogen is proposed as an energy vector of renewable sources such as wind and solar energy [1-3]. However, at present, for large-scale use of hydrogen, the development of reliable technologies for its separation, transport, and storage is necessary. In the recent decades, membrane technologies have been successfully applied in the hydrogen separation processes. The main advantages with respect to traditional separation processes are that the membranes permit continuous operation and energy saving. Furthermore, intrinsic modularity and easy scale-up of membrane systems make their integration with other separation processes practicable [4-8].
