Measurement of self-diffusion coefficient of asphaltene in pyridine by pulsed field gradient spin-echo 1H NMR

被引：45

作者：

Norinaga, K ^{[1
]}

Wargardalam, VJ

Takasugi, S

Iino, M

Matsukawa, S

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Tokyo Univ Fisheries, Marine Biochem Lab, Minato Ku, Tokyo 1088477, Japan

来源：

ENERGY & FUELS | 2001年 / 15卷 / 05期

关键词：

D O I：

10.1021/ef0100597

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：

Measurement of self-diffusion coefficient of asphaltene in pyridine is presented. The measurement is performed by pulsed field gradient spin-echo 1H nuclear magnetic resonance (PFG-1H NMR. The diffusion coefficient provides information concerning molecular size and aggregation states. The PFG 1H NMR measurements are most suitable as it is possible to determine the displacement of proton in the time interval between the two gradient pulses applied in the pulse sequence.

引用

页码：1317 / 1318

页数：2

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