Towards a new membrane micro reactor system for direct synthesis of hydrogen peroxide

Experimental Evaluation of a Membrane Micro Channel Reactor for Liquid Phase Direct Synthesis of Hydrogen Peroxide in Continuous Flow Using Nafion® Membranes for Safe Utilization of Undiluted Reactants

“…A scheme and a picture of the device have already been presented in Ref. [57] and are reproduced here in Figure 7. A frame holding the membrane is placed on top of a plate with a milled micro channel.…”

“…Simulation results indicated an optimized concentration profile that should lead to high conversion and high selectivity in the liquid phase. An initial proof of concept has been achieved previously [57]. This work describes the first experimental evaluations of the membrane micro channel reactor with alternating reactant dosage.…”

“…Microchannel set ups were used by different groups since the small inner dimensions on the one hand prevent explosions and thereby explosive mixtures can be utilized, and on the other hand, they decrease liquid diffusion pathways by forcing favorable flow patterns [44][45][46][47][48][49][50][51][52][53]. Membrane reactors are especially interesting since gas phase contact of H 2 and O 2 can be prevented by introducing one or both reactants through a membrane into the liquid solvent containing the catalyst [54][55][56][57].…”

“…Recently, our group developed a new approach, namely the concept of alternating reactant dosage attempting to combine the benefits of reactant dosing through membranes and flow properties in microchannels [57]. Simulation results indicated an optimized concentration profile that should lead to high conversion and high selectivity in the liquid phase.…”

“…Scheme of the microchannel membrane reactor (a) and photo of the plates forming the actual device (from left to right): liquid adapter plate, micro channel plate, membrane frame bottom, membrane frame top including gas chambers and gas adapter plate (b). Adapted from Ref [57]…”