Effect of Preparation Conditions on Properties of Pt–Re Catalysts Supported on Ceria–Zirconia in Water Gas Shift Reaction (WGSR)

• Published in: Nanobiotechnology Reports (Online) 2023-12, Vol.18 (Suppl 2), p.S279-S285
• Main Authors: Gorlova, A. M., Rogozhnikov, V. N., Pechenkin, A. A., Nikulina, I. E., Potemkin, D. I.
• Format: Article
• Language: English
• Subjects: Carbon monoxide; Catalysis; Catalysts; Cerium oxides; Chemisorption; Chemistry and Materials Science; Industrial and Production Engineering; Machines; Manufacturing; Materials Science; Nanomaterials for Functional and Structural Purposes; Nanotechnology; Platinum; Processes; Rhenium; Shift reaction; Water gas; Zirconium dioxide
• ISSN: 2635-1676; 1995-0780; 2635-1684; 1995-0799
• DOI: 10.1134/S263516762460010X

The data obtained for the first time on the influence of the sequence of metal deposition and the conditions of formation of the Re-containing component on the properties of a series of catalysts 1.9 wt % Pt–1.8 wt % Re/Ce 0.75 Zr 0.25 O 2 in the water gas shift reaction are presented. It is shown that catalysts in which platinum is deposited first have a content of both metals close to the expected level and make it possible to achieve the maximum CO conversion at a lower temperature compared to a monometallic platinum catalyst. Based on the data on CO chemisorption and calculations of the reaction rate per platinum surface area, it is assumed that the role of the Re-containing phase is to a greater degree related to the stabilization of a highly dispersed platinum state, rather than to participation in the catalysis of the reaction.