Homogeneously-catalysed hydrogen release/storage using the 2-methylindole/2-methylindoline LOHC system in molten salt-organic biphasic reaction systems

Ir-Complex catalysed hydrogen release/storage using a 2-methylindole/2-methylindoline Liquid Organic Hydrogen Carrier (LOHC) system is shown to be effective in a temperature range of 120 to 140 °C. In the form of a liquid-liquid biphasic reaction system with molten [PPh 4 ][NTf 2 ] as catalyst immobilisation phase, the applied cationic Ir-complex can be easily separated and recycled enabling a small amount of ionic catalyst solution to store/release a large amount of hydrogen. Hydrogenation/dehydrogenation is effectively catalyzed by a molten salt immobilized Ir-complex in a temperature range of 120 to 140 °C in a 2-methylindole/2-methylindoline Liquid Hydrogen Carrier (LOHC) system.