Issue 37, 2024

General synthesis for supported single-atom catalysts using hydroxyl nests in zeolites

Abstract

Due to their well-defined geometric and electronic structures and fully exposed active sites, single-atom catalysts (SACs) exhibit significantly enhanced catalytic activity in the field of catalysis. However, the controllable synthesis of SACs, particularly in a simple and scalable manner, presents formidable challenges. Here, we report the general synthesis of SACs containing Co, Ni, Cu, and Zn using a direct impregnation method. Atomically dispersed transition metal atoms over zeolite supports are confirmed by integrated differential phase contrast scanning transmission electron microscopy (iDPC-STEM) and extended X-ray absorption fine structure (EXAFS) spectroscopy. Detailed studies reveal that the dispersion process originates from the trapping of metal atoms by silane nests. Notably, the Co-SAC catalyst demonstrated superior catalytic performance in the industrially significant propane dehydrogenation reaction. This synthetic strategy is straightforward and amenable to large-scale production of thermally stable SACs for industrial applications.

Graphical abstract: General synthesis for supported single-atom catalysts using hydroxyl nests in zeolites

Supplementary files

Article information

Article type
Paper
Submitted
29 Mezh. 2024
Accepted
15 Eost 2024
First published
19 Eost 2024

J. Mater. Chem. C, 2024,12, 14858-14864

General synthesis for supported single-atom catalysts using hydroxyl nests in zeolites

Q. Liu, J. Wang, K. Zhao, Y. Yang and X. Wang, J. Mater. Chem. C, 2024, 12, 14858 DOI: 10.1039/D4TC02758B

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