Fig. 2: Reactor used for SAMBADENA experiments.

a Cross-sectional view of the reactor designed using CAD. It illustrates the two-chamber structure, with the inner chamber designated for hosting the hydrogenation reaction and the outer chamber for active heating. b Photograph of the reactor, showing the top lid covering for the reaction chamber. Two inlets, one on each side (black), are connecting the heating chamber of the reactor for the hot water circulation. A one-way PEEK check valve (black) is connected to the bottom inlet of the reaction chamber to direct gas flow into the reactor. The white attachment connected to the reactor was used for positioning the reactor in the MRI system when used without the mouse bed.