Heterogeneous catalysts based on non-critical raw materials were synthetized by co-precipitation and hydrothermal processes and analysed by physico-chemical characterizations. The scaling up procedure were demonstrated for all catalysts, in particular for the oxygen evolution reaction, in alkaline environment, of NiFeOxHy (20 g); for the hydrogen evolution reaction, in acidic environment, MoS2/C (20 g) and in alkaline environment, NiMo unsupported (12 g). To ensure a robust and reliable scale-up process, CNR-ITAE carefully addressed reactor design and operating conditions, batch size optimization, and the implementation of rigorous quality-control procedures.
