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首页> 外文期刊>Fuel >Correlations between SARA fractions and physicochemical properties with ~1H NMR spectra of vacuum residues from Colombian crude oils
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Correlations between SARA fractions and physicochemical properties with ~1H NMR spectra of vacuum residues from Colombian crude oils

机译：哥伦比亚原油减压渣油的SARA馏分与理化性质与〜1H NMR光谱的关系

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摘要

Areas of resonance signals present in 12 frequency bins of the 'H NMR spectra of the vacuum residues of five Colombian crudes and a blend were correlated with their SARA components and some physicochemical properties. The residues studied were obtained from light paraffinic to heavy aromatic Colombian crudes. Correlations between the NMR spectra and properties were obtained with partial least square PLS and multiple linear regression MLR. Prediction models for SARA obtained by PLS had R~2 ＞ 0.97 while CV - q~2 was between 0.92 and 0.99. Models obtained with MLR for SARA showed a high R_(ad)~2 for the first three components and a lower one for asphaltene. The R~2 of the prediction models for density, API Gravity, S, N, Ni ppm and wax %m content plus nC5- and -C7 insolubles were ＞0.988 while CV - q~2 was between 0.87 and 0.99. The proposed correlation methods are fast and less costly than the conventional ones.
机译：存在于五种哥伦比亚原油及其混合物的真空残留物的1 H NMR光谱的12个频点中的共振信号区域与它们的SARA成分和一些理化特性相关。研究的残留物是从轻链烷烃到重芳烃哥伦比亚原油获得的。使用偏最小二乘PLS和多元线性回归MLR获得了NMR光谱与性质之间的相关性。通过PLS获得的SARA的预测模型具有R〜2＞ 0.97，而CV-q〜2在0.92至0.99之间。用MLR获得的SARA模型显示，前三个组分的R_（ad）〜2高，而沥青质的组分则较低。密度，API重力，S，N，Ni ppm和蜡％m含量加上nC5-和-C7不溶物的预测模型的R〜2＞ 0.988，而CV -q〜2在0.87至0.99之间。所提出的相关方法比常规方法快速且成本更低。

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  • 来源
    《Fuel》 |2010年第1期|185-192|共8页
  • 作者

    Daniel Molina V; Uriel Navarro Uribe; Juan Murgich;

  • 作者单位

    Escuela de Quimica, Universiaad Industrial de Santander, Apartado Aereo 678, Bucaramanga, Colombia;

    ECOPETROL - Institute Colombiaro det Petroleo, Piedecuesta, Colombia;

    Centra de Quimica, IVIC, Apartad 21827, Caracas 1020A, Bolivarian Republic of Venezuela;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    SARA; correlation; vacuum residues; ~1H NMR;

    机译：SARA;相关性真空残留物;〜1H NMR;

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