Spectroscopy in carbon deposits characterization

Abstract
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.