Effect of AlSiOx support modification by alkali or alkaline earth metals on propene formation in the metathesis of C2H4 and 2-C4H8 over MoOx-based catalysts

Die Metathese von Ethen mit 2‐Butenen zu Propen ist ein etablierter großtechnischer Prozess. Allerdings sind die Grundlagen der In situ‐Umwandlung von geträgerten WOx‐, MoOx‐ oder ReOx‐Spezies in katalytisch aktive Metallcarbene und deren intrinsische Aktivität sowie die Rolle metatheseinaktiver Cokatalysatoren noch ungeklärt, was sich nachteilig auf die Katalysatorentwicklung und Prozessoptimierung auswirkt. Die Studie liefert die erforderlichen Grundlagen basierend auf steady‐state isotopic transient kinetic analysis. Zum ersten Mal wurden die stationäre Konzentration, die Lebensdauer und die intrinsische Reaktivität von Metallcarbenen bestimmt. Die erhaltenen Ergebnisse können direkt für das Design und die Herstellung von Katalysatoren für die Metathese‐Reaktion und Cokatalysatoren verwendet werden, was die Möglichkeit zur Optimierung der Propenproduktivität eröffnet.

show abstract

Performance‐Deskriptoren für Katalysatoren auf Basis von Molybdän‐, Wolfram‐ oder Rheniumoxiden für die Metathese von Ethen mit 2‐Buten zu Propen

Zhang

Xiao

Liu

et al. 2023

Angewandte Chemie

Self Cite

View full text Add to dashboard Cite

show abstract

Performance Descriptors for Catalysts Based on Molybdenum, Tungsten, or Rhenium Oxides for Metathesis of Ethylene with 2‐Butenes to Propene

et al. 2023

Self Cite

View full text Add to dashboard Cite

The metathesis of ethylene with 2‐butenes to propene is an established large‐scale process. However, the fundamentals behind in situ transformation of supported WOx, MoOx, or ReOx species into catalytically active metal‐carbenes and the intrinsic activity of the latter as well as the role of metathesis‐inactive cocatalysts are still unsolved. This is detrimental for catalyst development and process optimization. In this study, we provide the required essentials derived from steady‐state isotopic transient kinetic analysis. For the first time, the steady‐state concentration, the lifetime, and the intrinsic reactivity of metal carbenes were determined. The obtained results can be directly used for the design and the preparation of metathesis‐active catalysts and cocatalysts, thereby opening up possibilities for optimizing propene productivity.

show abstract

The enhancing effect of Co2+ on propane non-oxidative dehydrogenation over supported Co/ZrO2 catalysts

Zhang,

Li,

Otroshchenko

et al. 2024

Journal of Catalysis

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Effect of AlSiO_x support modification by alkali or alkaline earth metals on propene formation in the metathesis of C₂H₄ and 2-C₄H₈ over MoO_x-based catalysts

Abstract: The metathesis of ethylene with 2-butenes to propene is currently applied for large-scale on-purpose production of this building block of the chemical industry. MoOx-based supported catalysts are promising alternatives to...

Cited by 3 publications

References 33 publications

Performance‐Deskriptoren für Katalysatoren auf Basis von Molybdän‐, Wolfram‐ oder Rheniumoxiden für die Metathese von Ethen mit 2‐Buten zu Propen

Performance‐Deskriptoren für Katalysatoren auf Basis von Molybdän‐, Wolfram‐ oder Rheniumoxiden für die Metathese von Ethen mit 2‐Buten zu Propen

Performance Descriptors for Catalysts Based on Molybdenum, Tungsten, or Rhenium Oxides for Metathesis of Ethylene with 2‐Butenes to Propene

The enhancing effect of Co2+ on propane non-oxidative dehydrogenation over supported Co/ZrO2 catalysts

Contact Info

Product

Resources

About