Characterization by 13C n.m.r. spectroscopy of base oils produced by different processes

@inproceedings{Sarpal1997CharacterizationB1,
  title={Characterization by 13C n.m.r. spectroscopy of base oils produced by different processes},
  author={A. S. Sarpal and Gurpreet Singh Kapur and Surajit Mukherjee and Sanmati K. Jain},
  year={1997}
}
Abstract The hydrocarbon composition of base oils produced by different processes—hydrotreatments (hydrocracking and wax isomerization), solvent refining plus hydrofinishing, and severe hydrofinishing—were determined by 13 C n.m.r. spectroscopy. Structural parameters such as normal and iso-paraffin contents, average chain length and number of branching sites were estimated by new equations derived after complete assignment of signals in the 5–21 ppm 13 C n.m.r. region. Quantitative differences… CONTINUE READING

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