Influence of Raman Spectroscopy Test Conditions on the Results of Carbon Chemical Structure of Chars

To address the problem of variability in situ Raman spectroscopy for determining chemical structure chars, rationality Raman’s original peak spectrum fitting method, influence objective lens magnification, particle size, and number measurements on shape characteristic parameters were investigated. The results show that char is fitted by five peaks goodness fit best when D3 a Gaussian curve. intensity stability are related to magnification. For relatively large increased coefficient variation accordingly reduced. As size increases, AG/AAll characterize perfect graphite decrease AD1/AAll, AD3/AAll, AD1/AG defective increase. found be smallest range 81–96 μm. Micro-Raman imaging reveals microscopic different micro zones significantly required achieve reliable this anisotropy.