Additive manufacturing of interpenetrating periodic open cellular structures (interPOCS) with in operando adjustable flow characteristics

•Investigation of a completely new class of catalyst support structures, the interPOCS.•Geometrical characterization (specific surface area and porosity) of interPOCS.•Experimental investigation and modelling of pressure drop in interPOCS as a function of the structures’ offset.•Pressure drop can be changed by > 45 % via maximum offset change.•interPOCS offer in operando flow adjustment for dynamic and flexible continuous flow operations.