Issue 26, 2024

Cu–Pd bimetal-decorated siloxene nanosheets for semi-hydrogenation of acetylene

Abstract

Metallic Pd has been proved highly promising when paired with Cu for industrially important acetylene semi-hydrogenation. Herein, we demonstrate that high-surface-area siloxene can feasibly enable alloying between Pd and Cu via room-temperature reduction with Si–H bonds. Unprecedentedly small Cu nanoparticles with isolated Pd were in situ loaded on siloxene, addressing the core problem of low selectivity of Pd and low activity of Cu. This devised structure outclassed the traditional impregnated SiO2 in every aspect of the catalytic performance for the semi-hydrogenation of acetylene under industry conditions, with a 91% acetylene conversion and an impressive 93% selectivity to ethylene at 200 °C, and showed long-term stability with negligible activity decay at this harsh temperature. This work provides new insights for the design of economic bimetallic loaded catalysts for balancing the activity–selectivity dilemma, demonstrating the viability of siloxene as both a synthetic reagent and a carrier material for efficient catalysis.

Graphical abstract: Cu–Pd bimetal-decorated siloxene nanosheets for semi-hydrogenation of acetylene

Supplementary files

Article information

Article type
Communication
Submitted
03 May 2024
Accepted
24 May 2024
First published
27 May 2024

Nanoscale, 2024,16, 12411-12419

Cu–Pd bimetal-decorated siloxene nanosheets for semi-hydrogenation of acetylene

X. Pei, D. Zhang, R. Tang, S. Wang, C. Zhang, W. Yuan and W. Sun, Nanoscale, 2024, 16, 12411 DOI: 10.1039/D4NR01911C

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