Open AccessDesign and Use of a High‐Pressure Stirred IR Cell for Operando Studies in Homogeneous Catalysis
Author(s) -
Crotti Corrado,
Ferretti Francesco,
Ragaini Fabio
Publication year - 2021
Publication title -
chemistry ‐ methods
Language(s) - English
Resource type - Journals
ISSN - 2628-9725
DOI - 10.1002/cmtd.202100048
Subject(s) - autoclave , seal (emblem) , materials science , homogeneous , diffusion , catalysis , ethylene , chemical engineering , ethylene oxide , composite material , polymer , chemistry , organic chemistry , thermodynamics , metallurgy , art , physics , copolymer , engineering , visual arts
The design and operation of a new kind of high pressure/high temperature stirred IR cell is described. The cell is a stand‐alone autoclave made of Hastelloy and effective stirring and gas diffusion are provided by a magnetically driven Teflon shaft. The length of the optical path can be regulated without the need of calibrated spacers and the problem of the sealing of the windows to the cell body has been solved by employing FEP (fluorinated ethylene propylene) encapsulated Viton O‐rings, which, upon adapting to the cell when warmed, provide an excellent seal that is also tolerant of all standard solvents. The use of this kind of O‐rings allows taking advantage of the chemical resistance of Teflon without needing to mechanically stress the fragile windows as it would be required if bulk Teflon O‐rings were employed.