Physico-chemical characterization of products from vacuum oil under delayed coking process by infrared spectroscopy and chemometrics methods

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

Meléndez, L.V.^1 ; Cabanzo, R.^1 ; Mejía-Ospino, E.^1 ; Guzmán, A.^2

Universidad Industrial de Santander (UIS), Bucaramanga, Colombia^1

Instituto Colombiano Del Petróleo (ICP), Ecopetrol S.A., Piedecuesta-Santander, Colombia^2

关键词: Aliphatic chains;    Attenuated total reflectance;    Condensation degree;    Conradson carbon contents;    Physico-chemical characterization;    Physicochemical property;    Spectroscopy data;    Structural parameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012113/pdf
DOI  :  10.1088/1742-6596/687/1/012113

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Eight vacuum residues and their delayed coking liquids products from Colombian crude were study by infrared spectroscopy with attenuated total reflectance (FTIR-ATR) and principal component analysis (PCA). For the samples the structural parameters of aromaticity factor (fa), alifaticity (A2500-3100cm-1), aromatic condensation degree (GCA), length of aliphatic chains (LCA) and aliphatic chain length associated with aromatic (LACAR) were determined through the development of a methodology, which includes the previous processing of spectroscopy data, identifying the regions in the IR spectra of greatest variance using PCA and molecules patterns. The parameters were compared with the results obtained from proton magnetic resonance (1H-NMR) and13C-NMR. The results showed the influence and correlation of structural parameters with some physicochemical properties such as API gravity, weight percent sulphur (% S) and Conradson carbon content (% CCR).