J. Phys. IV France
Volume 117, October 2004
Page(s) 41 - 46

J. Phys. IV France 117 (2004) 41-46

DOI: 10.1051/jp4:2004117007

Spectroscopy in carbon deposits characterization

S. 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