화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.46, 324-336, February, 2017
Effective hydrogen production from propane steam reforming over bimetallic co-doped NiFe/Al2O3 catalyst
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In this study, we investigated the role of Fe oxide as a promoter to improve the redox properties of Ni in PSR (propane steam reforming), thereby extending its lifetime and enabling it to be more easily oxidized by the CO generated to produce CO2. Bimetallic NiFe supported on g-Al2O3 (30NixFeyO/70Al2O3) samples are prepared as catalysts and characterized by XRD, TEM, H2-TPR, TPO, and XPS. Moreover, a mechanism for propane steam reforming over the 30NixFeyO/70Al2O3 catalyst is proposed on the basis of the GC and mass spectroscopy results and CO-, C3H8-, and H2O-temperature programmed desorption analysis. Consequently, the Fe components in the 30NixFeyO/70Al2O3 catalysts suppressed the agglomeration between the Ni and Al particles. The catalytic performances on the 30NixFeyO/70Al2O3 catalysts are improved by the reduced deposition of carbon compared to that on the 30NiO/70Al2O3 one: at 700 °C, the hydrogen selectivity amounted to 86% in the 30Ni0.8Fe0.2O/70Al2O3 catalyst compared to 79% in the 30NiO/70Al2O3 one.