Modulating Propane Dehydrogenation Performance and Stability of Ni2P with Co Doping

Non-oxidative propane dehydrogenation is an endothermic reaction requiring thermally stable and regenerable catalysts to produce propylene. In this work, we investigate bimetallic Co X Ni 2-X P as an alternative, non-noble metal propane dehydrogenation catalyst. Co 1 Ni 1 P displayed higher propylen...

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Bibliographic Details
Published in:Catalysis letters 2024-03, Vol.154 (3), p.910-919
Main Authors: Muhlenkamp, Jessica A., Cho, Yoonrae, Hicks, Jason C.
Format: Article
Language:English
Subjects:
Bimetals
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Dehydrogenation
Endothermic reactions
endothermy
Industrial Chemistry/Chemical Engineering
Life sciences
Nitrates
Noble metals
Organometallic Chemistry
phase transition
Phase transitions
Physical Chemistry
Propane
Propylene
Regeneration
Temperature
Thermal stability
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Summary:Non-oxidative propane dehydrogenation is an endothermic reaction requiring thermally stable and regenerable catalysts to produce propylene. In this work, we investigate bimetallic Co X Ni 2-X P as an alternative, non-noble metal propane dehydrogenation catalyst. Co 1 Ni 1 P displayed higher propylene selectivity than Co 2 P and higher site-normalized propylene production rates than Ni 2 P. Different compositions of Co X Ni 2-X P catalysts were evaluated for propane dehydrogenation with oxidative regeneration in between each cycle. Ni-rich Co 0.5 Ni 1.5 P showed increased propylene production upon regeneration due to the formation of the Ni 12 P 5 phase during reaction. In contrast, Co 1 Ni 1 P and Co 1.25 Ni 0.75 P showed the ability to recover > 50% of the initial activity for at least 3 oxidative regenerations, while maintaining high propylene selectivity without any phase change. This study showcases the enhancement in stability and propane dehydrogenation performance of Ni 2 P through Co incorporation and Ni:Co ratio control. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-023-04357-4