Hydrogen storage in liquid organic hydride: Selectivity of MCH dehydrogenation over monometallic and bimetallic Pt catalysts

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Hydrogen storage for mobile and stationary applications is an expanding research topic. One of the more promising storage techniques relies on the reversibility, high selectivity, and high hydrogen d. of liq. org. hydrides, in particular methylcyclohexane (MCH). Catalyst evaluation for MCH dehydrogenation to toluene is based on three catalytic parameters: activity, selectivity, and stability. Current catalysts, optimized for catalytic reforming, do not meet the targeted arom. selectivity (+99%) for MCH dehydrogenation. Therefore, a range of Pt catalysts was prepd. and compared with com. available catalysts in a fixed-bed reactor under operating conditions suitable for mobile and stationary applications. The best overall performance was realized by a particular monometallic Pt catalyst. This catalyst showed superior activity, selectivity, and stability compared with other prepd. and com. catalysts. As an effort to further enhance the arom. selectivity, this study identified the main side-reactions assocd. with MCH dehydrogenation, the effect of operating parameters on byproduct yields, and the effect of catalyst deactivation on long-term selectivity. [on SciFinder(R)]

Bibliographical metadata

Original languageEnglish
Pages (from-to)14010-14026
Number of pages17
JournalInt. J. Hydrogen Energy
Issue number32
Publication statusPublished - 2013