High-purity hydrogen production from dehydrogenation of methylcyclohexane catalyzed by zeolite-encapsulated subnanometer platinum-iron clusters.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39746992.
- Also identified by DOI 10.1038/s41467-024-55370-z and PMC identifier 11696464.
- Licence recorded as CC BY-NC-ND.
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Abstract
Liquid organic hydrogen carriers (LOHCs) are considered promising carriers for large-scale H<sub>2</sub> storage and transportation, among which the toluene-methylcyclohexane cycle has attracted great attention from industry and academia because of the low cost and its compatibility with the current infrastructure facility for the transportation of chemicals. The large-scale deployment of the H<sub>2</sub> storage/transportation plants based on the toluene-methylcyclohexane cycle relies on the use of high-performance catalysts, especially for the H<sub>2</sub> release process through the dehydrogenation of methylcyclohexane. In this work, we have developed a highly efficient catalyst for MCH dehydrogenation reaction by incorporating subnanometer PtFe clusters with precisely controlled composition and location within a rigid zeolite matrix. The resultant zeolite-encapsulated PtFe clusters exhibit the up-to-date highest reaction rate for dehydrogenation of methylcyclohexane to toluene, very high chemoselectivity to toluene (enabling the production of H<sub>2</sub> with purity >99.9%), remarkably high stability (>2000 h) and regenerability over consecutive reaction-regeneration cycles.