Non‐Oxidative Dehydroaromatization of Linear Alkanes on Intermetallic Nanoparticles DOI Open Access
Ranjan Kumar Behera, Andrew Lamkins, Minda Chen

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(23)

Published: Sept. 2, 2024

Abstract There has been significant interest in developing new catalytic systems to convert linear chain alkanes into olefins and aromatics. In the case of higher (≥C 6 ), production aromatic compounds such as benzene‐toluene‐xylenes is highly desirable. However, length carbon increases, dehydrogenation process becomes more complex, not only due challenges C−H activation but also need for selectivity towards desired products by possibility side reactions isomerization cracking. Here, we present a detailed analysis dehydroaromatization n‐hexane, n‐heptane, n‐octane, using PtSn intermetallic nanoparticles supported on SBA‐15 catalyst. Through situ spectroscopic kinetic analysis, have probed reaction kinetics catalyst deactivation, provided mechanistic understanding surface nanoparticles. Introducing Sn shown be crucial enhancement activity, aromatics stability stream. Furthermore, rates reactant possible intermediates indicates that n‐hexane benzene likely proceeds through initial steps followed ring closing.

Language: Английский

Tuning the Selectivity in the Nonoxidative Alkane Dehydrogenation Reaction by Potassium-Promoted Zeolite-Encapsulated Pt Catalysts DOI Creative Commons

Nengfeng Gong,

Ruipeng Zhou,

Hongliu Wan

et al.

JACS Au, Journal Year: 2024, Volume and Issue: 4(12), P. 4934 - 4947

Published: Dec. 1, 2024

The significance of the nonoxidative dehydrogenation middle-chain alkanes into corresponding alkenes is increasing in context world's declining demands on transportation fuels and growing demand for chemicals materials. derived from reaction can be transformed value-added downstream processes. Due to presence multiple potential sites, mechanism more complicated than that light alkanes, there are few prior studies elucidating their detailed structure-reactivity relationship. In this work, we have employed Pt catalysts encapsulated pure-silica MFI zeolite crystallites as model studied how catalytic performances

Language: Английский

Citations

1
Non‐Oxidative Dehydroaromatization of Linear Alkanes on Intermetallic Nanoparticles DOI Open Access
Ranjan Kumar Behera, Andrew Lamkins, Minda Chen

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(23)

Published: Sept. 2, 2024

Abstract There has been significant interest in developing new catalytic systems to convert linear chain alkanes into olefins and aromatics. In the case of higher (≥C 6 ), production aromatic compounds such as benzene‐toluene‐xylenes is highly desirable. However, length carbon increases, dehydrogenation process becomes more complex, not only due challenges C−H activation but also need for selectivity towards desired products by possibility side reactions isomerization cracking. Here, we present a detailed analysis dehydroaromatization n‐hexane, n‐heptane, n‐octane, using PtSn intermetallic nanoparticles supported on SBA‐15 catalyst. Through situ spectroscopic kinetic analysis, have probed reaction kinetics catalyst deactivation, provided mechanistic understanding surface nanoparticles. Introducing Sn shown be crucial enhancement activity, aromatics stability stream. Furthermore, rates reactant possible intermediates indicates that n‐hexane benzene likely proceeds through initial steps followed ring closing.

Language: Английский

Citations

0