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借助电子顺磁共振（EPR）作为补充技术分析手段，通过气相色谱（GC）、气相色谱 - 质谱联用（GC-MS）、核磁共振（NMR）和扫描电子显微镜 - 能谱分析（SEM-EDX）的综合分析，深入洞察超临界水用于重油升级的情况。

Deep Insights into Heavy Oil Upgrading Using Supercritical Water by a Comprehensive Analysis of GC, GC-MS, NMR, and SEM-EDX with the Aid of EPR as a Complementary Technical Analysis.

作者信息

Djimasbe Richard, Varfolomeev Mikhail A, Al-Muntaser Ameen A, Yuan Chengdong, Suwaid Muneer A, Feoktistov Dmitriy A, Rakhmatullin Ilfat Z, Milovankin Aleksei A, Murzakhanov Fadis, Morozov Vladimir, Gafurov Marat, Farhadian Abdolreza, Davletshin Rustam R

机构信息

Department of Petroleum Engineering, Kazan Federal University, Kremlevskaya 18, Kazan 420008, Russia.

Department of Physical Chemistry, Kazan Federal University, Kremlevskaya 18, Kazan 420008, Russia.

出版信息

ACS Omega. 2020 Dec 28;6(1):135-147. doi: 10.1021/acsomega.0c03974. eCollection 2021 Jan 12.

DOI:10.1021/acsomega.0c03974
PMID:33458466
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7807475/
Abstract

Upgrading of heavy oil in supercritical water (SCW) was analyzed by a comprehensive analysis of GC, GC-MS, NMR, and SEM-EDX with the aid of electron paramagnetic resonance (EPR) as a complementary technical analysis. The significant changes in the physical properties and chemical compositions reveal the effectiveness of heavy oil upgrading by SCW. Especially, changes of intensities of conventional EPR signals from free radicals (FRs) and paramagnetic vanadyl complexes (VO) with SCW treatment were noticed, and they were explained, respectively, to understand sulfur removal mechanism (by FR intensity and environment destruction) and metal removal mechanism (by VO complexes' transformation). For the first time, it was shown that electronic relaxation times extracted from the pulsed EPR measurements can serve as sensitive parameters of SCW treatment. The results confirm that EPR can be used as a complementary tool for analyzing heavy oil upgrading in SCW, even for the online monitoring of oilfield upgrading.

摘要

借助电子顺磁共振（EPR）作为补充技术分析手段，通过气相色谱（GC）、气相色谱 - 质谱联用（GC-MS）、核磁共振（NMR）和扫描电子显微镜 - 能谱分析（SEM-EDX）的综合分析，对超临界水（SCW）中重油的升级过程进行了研究。物理性质和化学成分的显著变化揭示了超临界水对重油升级的有效性。特别是，注意到了经超临界水处理后自由基（FRs）和顺磁性钒酰络合物（VO）的常规EPR信号强度的变化，并分别对其进行了解释，以理解脱硫机理（通过FR强度和环境破坏）和脱金属机理（通过VO络合物的转化）。首次表明，从脉冲EPR测量中提取的电子弛豫时间可作为超临界水处理的敏感参数。结果证实，EPR可作为分析超临界水中重油升级的补充工具，甚至可用于油田升级的在线监测。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/e2b2b730352e/ao0c03974_0013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/9696ee65c739/ao0c03974_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/a77e30fd0973/ao0c03974_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/8944434269b8/ao0c03974_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/94f6acef6a54/ao0c03974_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/84361b74f46a/ao0c03974_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/dab53469579d/ao0c03974_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/8664c067e507/ao0c03974_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/0542a06415a3/ao0c03974_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/d5463160e4da/ao0c03974_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/a93f11f0ed8c/ao0c03974_0012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/e2b2b730352e/ao0c03974_0013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/9696ee65c739/ao0c03974_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/a77e30fd0973/ao0c03974_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/8944434269b8/ao0c03974_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/94f6acef6a54/ao0c03974_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/84361b74f46a/ao0c03974_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/dab53469579d/ao0c03974_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/8664c067e507/ao0c03974_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/0542a06415a3/ao0c03974_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/d5463160e4da/ao0c03974_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/a93f11f0ed8c/ao0c03974_0012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/febf/7807475/e2b2b730352e/ao0c03974_0013.jpg

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