A novel structured PdZnAl/Cu fiber catalyst for methanol steam reforming in microreactor

摘要

Structured PdZnAl/Cu fiber catalyst prepared by a PVA(Polyvinyl Alcohol)-assisted coating method, was integrated in the micro-reactor for methanol steam reforming (MSR), which could be used to efficiently produce hydrogen in situ for a coupled fuel cell. XRD, SEM-EDX and HRTEM etc. were employed to characterize both the fresh and spent powder and structured catalysts. A variety of reaction conditions were tested to achieve the optimized reaction condition, where the H-2 productivity and the product distribution especially CO selectivity were carefully examined. Compared to the structured CuZnAlZr/Cu fiber catalyst, the PdZnAl/Cu counterpart exhibits superior stability in MSR process, and its spent catalyst could be readily regenerated just by oxidation in air at 420 degrees C for 4 h. (C) 2017 Elsevier Ltd. All rights reserved.