Propane Dehydrogenation Over the Catalyst with Stable and Dispersed Pt Clusters on Zn-MSN Support DOI

Jiaxin Song,

Yiou Shan,

Xiaoqiang Fan

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Propane dehydrogenation (PDH) over platinum-based bimetallic catalysts has received widespread attention as an on-purpose technology for producing propylene. However, prepared using the traditional impregnation method usually show a weak interaction between support and active Pt sites. Moreover, undergo structural changes in high-temperature-reducing atmosphere, resulting decreased activity during reaction. To enhance metal–support interaction, Zn-doped mesoporous silica nanoparticle (Zn-MSN) supports were one-step synthesis to species. The addition of Zn altered surface properties MSN support, increasing number hydroxyl groups thereby improving dispersion [Pt(NH3)4]2+ on catalyst through electrostatic interactions. Pt/2.0Zn-MSN catalyst, with highly stable dispersed clusters, showed highest PDH activity, initial propane conversion propylene selectivity 51.3% 98.7%, respectively. It also strong resistance coke deposition had lowest deactivation rate 0.008 h–1.

Language: Английский

Confinement of Atomically Dispersed Ptδ+ Sites in Zinc-Incorporated Silicalite-1 Zeolite for Enhanced Propane Dehydrogenation DOI

Jindong Ji,

Guoli Fan, Lirong Zheng

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 5858 - 5875

Published: March 26, 2025

Language: Английский

Citations

0
Propane Dehydrogenation Over the Catalyst with Stable and Dispersed Pt Clusters on Zn-MSN Support DOI

Jiaxin Song,

Yiou Shan,

Xiaoqiang Fan

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Propane dehydrogenation (PDH) over platinum-based bimetallic catalysts has received widespread attention as an on-purpose technology for producing propylene. However, prepared using the traditional impregnation method usually show a weak interaction between support and active Pt sites. Moreover, undergo structural changes in high-temperature-reducing atmosphere, resulting decreased activity during reaction. To enhance metal–support interaction, Zn-doped mesoporous silica nanoparticle (Zn-MSN) supports were one-step synthesis to species. The addition of Zn altered surface properties MSN support, increasing number hydroxyl groups thereby improving dispersion [Pt(NH3)4]2+ on catalyst through electrostatic interactions. Pt/2.0Zn-MSN catalyst, with highly stable dispersed clusters, showed highest PDH activity, initial propane conversion propylene selectivity 51.3% 98.7%, respectively. It also strong resistance coke deposition had lowest deactivation rate 0.008 h–1.

Language: Английский

Citations

0