Catherine A. Johnson

TL;DR: In this paper, the laser Raman microprobe (MOLE) was used to estimate the size of microcrystalline regions of high temperature cokes and the results were compared with conventional optical microscopy measurements whereby it was shown that the optical texture and Raman spectra of cokes are not closely related.

TL;DR: In this article, the relationship between Raman spectral parameters, optical reflectance measurements, and crystallite diameter, La, determined by X-ray diffraction measurements, was investigated in terms of the coke structure and they suggest that Raman spectroscopy and reflectance measurement are potentially useful for characterising differences in thermal history in heterogeneous char samples.

TL;DR: In this paper, the use of Raman spectroscopy for the characterization of carbon deposits on three types of nickel/alumina catalysts is reported, and it is shown that the amount of carbon deposit falls off very rapidly within a given catalyst pellet and the carbon is seen as encapsulating the pellet.