Reactor apparatus for loading and / or unloading of a carrier medium to and from hydrogen and system with such a reactor device,

A reactor device (1) for loading and / or unloading of a carrier medium with or hydrogen comprising a fillable with carrier medium reactor housing (2) with a carrier medium supply opening (9), with a carrier medium discharge opening (8), having a base (3) and with a hydrogen gas-opening (6). The reactor apparatus (1) further comprises at least one heat transfer element (15) for supplying heat into the reactor housing (2). In the reactor housing (2) is provided catalyst.