Oxide support mediated [FeO4] domains steering C–H activation in propane dehydrogenation - Details

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Supported　iron-based　catalysts　have　emerged　as　promising　candidates　for　alkane　dehydrogenation　due　to　their　excellent　sulfide　resistance,　cost-effectiveness,　and　environmental　advantages　to　meet　the　needs　of　industrial　applications.　However,　the　practical　application　of　iron-based　catalysts　is　hindered　by　insufficient　catalytic　activity　and　rapid　deactivation,　primarily　caused　by　the　reduction/sintering　of　metastable　iron　species　and　concomitant　carbon　deposition　during　the　reaction.　This　work　systematically　investigates　the　divergent　catalytic　behaviors　of　alumina-　versus　silica-supported　Fe　catalysts　in　propane　dehydrogenation　(PDH).　Comprehensive　characterizations　demonstrate　that　the　surface　acidic　alumina　support　establishes　strong　metal-support　interactions　(MSI)　with　electron-rich　[Fe2.4+O4]　domains,　effectively　enhancing　catalytic　activity　with　a　propane　conversion　of　29　%　and　80　%　propylene　selectivity,　outperforming　silica-supported　counterparts.　At　the　same　time,　the　robust　active　structure　of　[Fe2.4+O4]　in　the　3Fe/Al2O3　catalyst　matches　good　regeneration　capability,　enabling　suffered　from　six　reaction-regeneration　cycles.　Moreover,　this　study　indicates　that　effective　propane　dehydrogenation　requiring　synergistic　interplay　between　FeOx　speciation　and　acid　sites　on　the　support　surface.　©　2025　Elsevier　Ltd

Keyword：

Activation analysis Alumina Aluminum oxide Catalyst activity Catalyst deactivation Catalyst regeneration Catalyst selectivity Catalyst supports Cost effectiveness Dehydrogenation Iron Iron oxides Propane Silica Sulfur compounds

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[ 1 ] [Tao, Xiaoxia]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Wang, Peng]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 3 ] [Wang, Peng]School of Future Membrane Technology, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Hou, Run]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Liao, Huafei]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 6 ] [Cao, Fenghai]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 7 ] [Fu, Yajie]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 8 ] [Chen, Yang]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 9 ] [Wu, Lizhi]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 10 ] [Tang, Yu]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 11 ] [Tan, Li]Key Laboratory of Advanced Carbon-Based Functional Materials, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China

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Chemical Engineering Science

ISSN： 0009-2509

Year： 2026

Volume： 320

4 . 1 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 14

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