Switchable Tuning CO2 Hydrogenation Selectivity by Encapsulation of the Rh Nanoparticles While Exposing Single Atoms. Issue 45 (26th September 2022)

• Record Type: Journal Article
• Authors: Han, Bing; Li, Qinghe; Jiang, Xunzhu; Guo, Yalin; Jiang, Qike; Su, Yang; Li, Lin; Qiao, Botao
• Is Part Of: Small. Volume 18:Issue 45(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-26
• Subjects: CO 2 hydrogenation -- encapsulation -- product selectivity switch -- single atoms -- strong metal‐support interaction (SMSI); Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202204490
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: The switch of CO2 hydrogenation selectivity from CH4 to CO over TiO2 supported Rh catalysts is accomplished via selective encapsulation of Rh nanoparticles while exposing Rh single atoms by high‐temperature reduction (HTR) according to their different strong metal‐support interaction (SMSI) occurrence conditions, which can be reversed by subsequent oxidation treatment. Abstract : CO2 hydrogenation selectivity can be tuned from CH4 to CO via selective encapsulation of Rh nanoparticles while exposing Rh single atoms by high‐temperature reduction (HTR) according to their different strong metal‐support interaction (SMSI) occurrence conditions, which can be reversed by subsequent oxidation treatment. However, for Rh/Al2 O3 where no SMSI occurs with HTR treatment, the main hydrogenation product is always CH4 .