Estimation of total aromatics and their distribution as mono and global di-plus aromatics in diesel-range products by NMR spectroscopy

被引：38

作者：

Bansal, V ^{[1
]}

Kapur, GS ^{[1
]}

Sarpal, AS ^{[1
]}

Kagdiyal, V ^{[1
]}

Jain, SK ^{[1
]}

Srivastava, SP ^{[1
]}

Bhatnagar, AK ^{[1
]}

机构：

[1] Indian Oil Corp Ltd, Ctr Res & Dev, Sector 13, Faridabad, Haryana, India

来源：

ENERGY & FUELS | 1998年 / 12卷 / 06期

关键词：

D O I：

10.1021/ef980052y

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In the present work, a new method based on IH NMR spectroscopy has been developed for the estimation of total aromatics and their distribution as mono- and polynuclear (di-ring plus) aromatics in diesel-range fuel products. Multipulse NMR techniques such as, distortionless enhancement by polarization transfer and 2-dimensional heteronuclear correlation have been applied for the unambiguous assignment of the 2.0-3.5 ppm region due to alpha-substituents on the aromatic ring in the H-1 NMR spectra. The estimation of polynuclear aromatics is based on the estimation of bridgehead aromatic (Ar-b) and substituted aromatic (Ar-q) carbons using equations developed. The proposed H-1 NMR-based method correlates very well with the standard IF-391/90- and mass-spectrometric-based method (R-2 = 0.99).

引用

页码：1223 / 1227

页数：5

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