J. Phys. IV France 117 (2004) 41-46
Spectroscopy in carbon deposits characterizationS. Pasieczna1, J. Ryczkowski1, T. Borowiecki1 and K. Stolecki2
1 University of Maria Curie-Sklodowska, 20-031 Lublin, Poland
2 Institute of Fertilizers, 24-110 Pulawy, Poland
Carbon deposits formed on the top of the catalysts is characterized by a different morphology. This depends, among the others, on the temperature of the catalytical reaction conducted. Application of FT-IR/PA (Fourier transform infrared photoacoustic) spectroscopy allows to distinguish the carbon deposit forms created during the reaction. Deposits formed at high temperature (steam reforming, hydrogenolysis) are graphite-like materials. In the contrary, at low temperature (hydrogenation of benzene) deposits formed exhibit functional groups on its surface. Moreover, deposit created at low temperature has two parts: soluble and insoluble.
© EDP Sciences 2004