Synergies between Ni, Co, and Mn ions in trimetallic Ni1-xCoxMnO4 catalysts for effective hydrogen production from propane steam reforming

Seung Won Jo, Younghwan Im, Jeong Yeon Do, No-Kuk Park, Tae Jin Lee, Sang Tae Lee, Moon Soon Cha, Min-Kyu Jeon and Misook Kang

Renewable Energy, 2017, vol. 113, issue C, 248-256

Abstract: To suppress the rapid degradation of Ni-based catalysts, Co along with Ni was used as a catalytic active species with a Mn oxide promoter that has excellent oxygen transfer ability. This study examines the optimal ratios between Ni and Co in the synthesized catalyst Ni1-xCoxMnO4 for high hydrogen production in the propane reforming reaction. The synthesized catalysts were characterized by XRD, TEM, XPS, and TPD of CO, C3H8, and H2O, and TPR of H2. In addition, the reaction mechanism of propane reforming and the behaviors of the gases adsorbed on the catalyst were investigated by NMR analysis. The results confirmed that the reduction of Ni mainly occurs before that of Co, which means that Ni acts as the main active species. In addition, gas adsorption increases over catalysts that contain both Ni and Co; the synthesized catalysts also showed improved catalytic activities. The optimum ratio of Ni:Co is 0.6:0.4, with high hydrogen evolution of >80%; complete propane conversion was obtained for the 30Ni00.6Co0.4MnO4/Al2O3 catalyst over 10 h.

Keywords: Propane reforming; Hydrogen production; Ni1-xCoxMnO4; Deposition of carbon (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:113:y:2017:i:c:p:248-256

DOI: 10.1016/j.renene.2017.05.072

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