Planar-Array-Microreactor

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Overview: Briefly described, embodiments of this disclosure, among others, include fuel processors, methods of using fuel processors, and the like. One exemplary fuel processor, among others, includes: a first reservoir configured to store a first fluid; a first planar ejector array structure disposed in communication with the first reservoir to generate droplets of the first fluid; a first droplet ejection zone for receiving droplets ejected from the first planar ejector array structure; and a catalyst layer disposed on the opposite side of the first droplet ejection zone as the first planar ejector array structure, wherein the droplets of the first fluid interact with the catalyst layer to form products. One exemplary method, among others, includes: providing a fuel processor as described herein; ejecting the first fluid through the first planar ejector array to form droplets of the first fluid; reacting the first fluid at the first catalyst layer to form a first set of reaction products, wherein the reaction products include H.sub.2; and separating H.sub.2 from the reaction products. One exemplary method, among others, includes: providing a fuel processor as described herein; ejecting the first fluid through the first planar ejector array to form droplets of the first fluid; reacting the first fluid at the first catalyst layer to form a first set of reaction products, wherein the reaction products include H.sub.2; dynamically changing and matching the rate of the droplet ejection from the first planar ejector array to a time scale of one or more of the transport, reaction, and separation processes; and separating H.sub.2 from the reaction products.