C-13 NMR AND MULTIVARIATE STATISTICAL-ANALYSIS OF ADSORBED SURFACE-ACTIVE CRUDE-OIL FRACTIONS AND THE CORRESPONDING CRUDE OILS

被引：17

作者：

URDAHL, O ^{[1
]}

BREKKE, T ^{[1
]}

SJOBLOM, J ^{[1
]}

机构：

[1] BREKKE CHEMOMETR CONSULTING,N-6800 FORDE,NORWAY

来源：

FUEL | 1992年 / 71卷 / 07期

关键词：

C-13; NMR; CRUDE OIL; FRACTION;

D O I：

10.1016/0016-2361(92)90122-5

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：

Six crude oils from the North Sea and the corresponding silica-adsorbed fractions are analysed by C-13 nuclear magnetic resonance spectroscopy and subsequent principal component analysis. Solvent shifts, integrals and peak heights are used as input in the principal component analysis. The silica-adsorbed fractions are enriched in condensed aromatics relative to the crudes. The individual crudes vary from being relatively naphthenic/aromatic to relatively paraffinic. The principal component loadings for the peak heights strongly indicate the presence of a long straight chain aliphatic compound containing a heteroatom substituent. The compound is particularly abundant in the paraffinic oils. It is believed that it may be active in the formation of stable water-in-crude oil emulsions.

引用

页码：739 / 746

页数：8

共 21 条

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