The Use of Cren To Improve <sup>13</sup>C-NMR Spectra of Compounds Containing Carbon Atoms Representative of Organics Dissolved In Kraft Black Liquor

Authors

  • Kenneth P. Wilson
  • Murray L. Laver
  • W. J. Frederick

Keywords:

Krait black liquor, CREN, <sup>13</sup>C-NMR, cellobiose, ferulic acid, vanillin

Abstract

Tris(ethylenediamine)chromium(III) chloride (CREN) was added as a relaxation agent for 13C-NMR spectra of cellobiose, ferulic acid [3-(4-hydroxy-3-methoxyphenyl)-2-trans-propenoic acid], and vanillin (4-hydroxy-3-methoxybenzaldehyde) in aqueous alkaline solutions. The three compounds contain carbon atoms representative of those in kraft black liquor dissolved organics. CREN improved the 13C-NMR spectra of the compounds by increasing the chemical shift dispersion in several cases, and by elucidating peaks that were not identifiable in 13C-NMR spectra without CREN.

References

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Published

2007-06-19

Issue

Number 2 / April 1997

Section

Research Contributions

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