Issue 24, 2022

In situ formation of Ni(CO)4 contaminant during IR analyses using a metal-containing reaction cell

Abstract

The formation of ppm levels of volatile Ni(CO)4 occurred in the presence of 1 kPa CO over a worn commercial cell used for diffuse reflectance FT-IR, but not on a more recent cell. The presence of Ni(CO)4 led to nickel deposition on Au and Cu-based catalysts evidenced by the presence of specific Ni–CO IR bands. In contrast, no Ni–CO IR bands could be observed on plain silica, suggesting that specific sites are required to decompose Ni(CO)4. The unambiguous evolution of the carbonyl signal on Au/SiO2 could be used as a test to assess the presence of ppm levels of Ni(CO)4 in in situ and operando IR cells.

Graphical abstract: In situ formation of Ni(CO)4 contaminant during IR analyses using a metal-containing reaction cell

Article information

Article type
Paper
Submitted
19 Sep 2022
Accepted
05 Nov 2022
First published
07 Nov 2022
This article is Open Access
Creative Commons BY license

Catal. Sci. Technol., 2022,12, 7433-7438

In situ formation of Ni(CO)4 contaminant during IR analyses using a metal-containing reaction cell

F. C. Meunier, Catal. Sci. Technol., 2022, 12, 7433 DOI: 10.1039/D2CY01638A

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