How to Analyze Petrochemicals with an NMR Spectrometer

Magritek’s Spinsolve Benchtop NMR spectrometer can be used for the characterization of fuels, crude oils, and other petrochemical products. In addition, it can be used for chemometrics, which is crucial for crude oil combinations and to estimate product properties.

1H NMR spectra of 9 different crude oils

1H NMR spectra of 9 different crude oils

Sample Type Location Density (g/mL) at 15.54 °C Density (°API) at 15.54 °C Sulfur content
1 Paraffinic Bakken – North Dakota, U.S.A. (North America) 0.815 42.0 0.10%
2 Paraffinic South Louisiana – Louisiana, U.S.A. (North America) 0.839 37.0 0.21%
3 Paraffinic Berri – Saudi Arabia (Middle East) 0.839 37.0 1.00%
4 Paraffininc-napthenic Qua Iboe – Nigeria (West Africa) 0.855 34.0 0.15%
5 Napthenic Hoops – Texas, U.S.A. (North America) 0.869 31.4 1.00%
6 Aromatic-intermediate Arabian – Saudi Arabia (Middle East) 0.870 31.1 2.48%
7 Aromatic-napthenic Vasconia – Colombia (South America) 0.909 24.2 0.56%
8 Aromatic-asphaltic Oriente – Ecuador (South America) 0.9105 24.0 1.31%
9 Aromatic-asphaltic Merey – Venezuela (South America) 0.968 14.7 2.74

Run NMR Samples Without Leaving the Chemistry Lab

Spinsolve is a groundbreaking multinuclear NMR spectrometer that offers the best performance of any benchtop system currently available in the market. The low cost, low weight, and small footprint of Spinsolve enable high-resolution, powerful NMR spectroscopy in the chemistry lab, apart from other analytical instruments such as GC, IR, MS, LC, FTIR and Raman systems. Spinsolve is now available in various convenient models.

For analyzing petroleum products like kerosene, gasoline, and jet fuel, the total hydrogen content is a highly significant parameter. A higher hydrogen content could lead to superior combustion and ignition properties of fuels. Valuable information related to the catalyst performance can be obtained by comparing the hydrogen content of products and feedstocks in the catalytic cracking process.

The aromatic hydrogen content is another useful parameter for the analysis of petroleum. For instance, the aromatic hydrogen content offers valuable information about the properties of petroleum, such as the K factor.

Conclusions

The Spinsolve Benchtop NMR spectrometer can be used to precisely and accurately measure the total and aromatic hydrogen content of gas, oils and other fuels. The sample can be prepared in a simple manner using small quantities of analytes and solvents. For each sample, the measurement period is short, and the results can be processed and reported in a completely automated manner.

This information has been sourced, reviewed and adapted from materials provided by Magritek.

For more information on this source, please visit Magritek.

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