Articles | Volume 4, issue 1
Regular research article
13 Apr 2015
Regular research article |  | 13 Apr 2015

Is it possible to detect in situ the sulfur loading of a fixed bed catalysts with a sensor?

P. Fremerey, A. Jess, and R. Moos


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Latest update: 26 Sep 2023
Short summary
A concept to measure in situ sulfidation of silica pellet catalysts loaded with nickel is evaluated. During sulfidation between 100 and 400°C nickel sulfides form. The electrical impedance of the pellets was recorded in situ. At first, the particles are highly insulating but during sulfidation their conductivity increases by decades. Since nickel sulfides are less conductive than nickel, the strong conductivity increase may be due to conducting percolation paths that form during sulfidation.