文献类型：期刊文献

英文题名：Resin from Liaohe Heavy Oil: Molecular Structure, Aggregation Behavior, and Effect on Oil Viscosity

作者：Li, Tao[1];Xu, Jun[1];Zou, Run[1];Feng, Hao[1];Li, Li[1];Wang, Junyou[1];Stuart, Martien A. Cohen[1];Guo, Xuhong[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Xinjiang 832000, Peoples R China

年份：2018

卷号：32

期号：1

起止页码：306

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20180404674378);WOS:【SCI-EXPANDED(收录号:WOS:000423253200033)】；

基金：Financial support from the National Natural Science Foundation of China (21476143, 51003028, and 51773061), the PetroChina Innovation Foundation (2016D-5007-0211), the Open Project of State Key Laboratory of Shihezi University (2016BTRC004), and the 111 Project Grant (B08021) are gratefully acknowledged. We thank the Petrochina Liaohe Oilfield Company for affording oil samples and technological support. The computations were performed at the High Performance Computing Center (HPCC) of East China University of Science and Technology, and we thank the HPCC staff for their excellent service.

语种：英文

外文关键词：Molecules - Chemical analysis - Heavy oil production - Resins - Crude oil - Ultraviolet visible spectroscopy - Asphaltenes - Quantum theory - Scanning electron microscopy - Light scattering - Mass spectrometry - Nuclear magnetic resonance spectroscopy - Petroleum transportation

摘要：Resin accounts for over 30% of the composition of Liaohe heavy crude oil and can result in severe difficulties in oil recovery and transportation. To determine the structure of the resin extracted from Liaohe heavy oil, matrix-assisted laser desorption ionization time-of-flight mass spectrometry, elemental analysis, Fourier-transform IR spectroscopy, and NMR spectroscopy were employed to determine the chemical structure of the resin. The results showed that the resin molecule is composed of anthracene, two cycloalkanes, and six alkyl chains grafted on the cyclic-structure core. UV-visible spectroscopy, turbidity measurements, dynamic light scattering, optical microscopy, and scanning electron microscopy were used to observe the resin aggregation behavior upon addition of a poor solvent. The effect of the resin on the rheology of model oils was investigated systematically. The pi-pi interactions among resin molecules impose a critical impact on the assembly of the resins. The quantum mechanics calculations revealed that there are two low-well depths of interaction energy when two resin molecules approach, which implies that the bending and branching structure of the resin aggregates may originate from the staggered stacking of the resin molecules. These findings can improve our understanding of the resin aggregation behavior and thus enlighten the solution to the flowing problem during recovery and transportation of heavy oil with a high resin content.