COMMISSION OFTHE EUROPEAN COMMUNITIES JOINT RESEARCH CENTRE Ispra Establishment Italy COMMUNICATION Hydrogen The information contained in this document is communicated confidentially by the Commission of the European Communities to Member States, persons and undertakings and should not be passed on to third parties. (Euratom-Treaty, Article 13, and PROGRAMME PROGRESS REPORT Regulation (EEC) No. 2380/74 of the Council of Ministers). July - December 1979 Programme Progress Report - JRC Ispra Establishment July-December 1979 HYDROGEN Abstract Multistep chemical processes for the decomposition of water, using nuclear heat, are studied in view of producing hydrogen as an intermediate energy vector. The results of the experimental work performed at the Ispra Establishment of the JRC are reported. The studies are principally related to the experimental tests of chemical reactions, to the corrosion problems, to the preliminary flow-sheet determination and techno-economic evaluation. The thermochemical processes selected and now under study are mainly two, all of the «Sulphur family» cycles, based on the thermal decomposition of sulphuric acid and including an electrochemical reaction (hybrid cycles).