The Molecular Design of High-Performance Carbon Materials
Abstract
The separation of petroleum pitch into its oligomeric fractions via dense-gas extraction (DGE), followed by the application of both new and conventional analytical techniques to those fractions, has given us unique capabilities for identifying the specific molecular structures that exist in petroleum pitches. In particular, pitch fractions containing 98% monomer or 97% dimer were isolated by DGE and characterized using MALDI, MALDI-PSD, and FD mass spectrometry (MS); as well as by H-NMR, UV-Vis, and FT-IR spectroscopy. Results indicate that the 98% monomer pitch fraction is approximately Gaussian with respect to molecular weight, with the dominant species present being methylated derivatives of the polycyclic aromatic hydrocarbons (PAH) benzofluorene, chryses, benzofluoranthene, and their isomers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 2008
- Accession Number
- ADA490266
Entities
People
- Mark C. Thies
Organizations
- Clemson University