アスファルテン凝集緩和挙動の評価(<総説特集>アスファルテンの凝集)

概要

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Dissociation behavior of asphaltene aggregates in solvents has been investigated by means of ^1H-NMR relaxation measurement. Spin-spin relaxation time, T_2, was employed to monitor the change in molecular mobility of asphaltenes induced by dissociation of aggregate structure. The CPMG curves obtained from asphaltenes in solvents were deconvoluted into at least three curves, namely strongly aggregate component, Agg-S, weekly aggregate component, Agg-W and liquid like component, Liq, with relaxation characteristics time, T_2. The dissociation behavior of asphaltene aggregate is able to characterize using spin-spin relaxation phenomenon obtained by ^1H-NMR. The heat of dissociation and solution is also evaluated by applying the van't Hoff equation to the intensities of the fractions.
一般社団法人日本エネルギー学会の論文
2007-10-20