What is inference on carbon elements
Answers
Answer:
This paper communicates the distribution of carbon atoms in a single poly-cyclic aromatic (PCA) layer (graphene) in Tikak coal from Assam, India. The pair distribution function (PDF) analysis performed indicates no evidence of any graphite like structure in this coal. The aromatic fraction is observed to be 74% with the aliphatic fraction correspondingly estimated to be 26% in this coal. The average carbon atom has 2.5 nearest carbon atom neighbours at an average bond distance of 1.50 Å. The average stacking height of the parallel aromatic layers (Lc) and the average diameter of the aromatic layers (La) are estimated to be 9.86 Å and 4.80 Å, respectively. For this coal, the average number of stacking layers and the average number of atoms per layer are estimated to be four and eight respectively. In addition, the gamma band is observed at a d-value of 4.34 Å.