Separation and characterization of asphaltenes from Saudi Arabian crudes

Misbah-ul-Hasan; M. Nahid Siddiqui; M. Arab

doi:10.1016/0016-2361(88)90382-1

Separation and characterization of asphaltenes from Saudi Arabian crudes

Misbah-ul-Hasan^*, M. Nahid Siddiqui, M. Arab

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The separation and characterization of asphaltenes from the four marketable Saudi Arabian crudes have been carried out by various analytical techniques. The asphaltenes were precipitated by addition of excess n-pentane to the heavy ends of each crude; Arab heavy crude gave the greatest yield. Elemental analysis showed the greatest amount of nitrogen, indicating the presence of basic functional groups, in Arab heavy crude and the greatest amount of oxygen, indicating the presence of acidic functional groups, in Arab Berri crude. Arab heavy asphaltenes also showed the highest molecular weight and phenol interaction value. In a spot test the amount of n-pentane or n-heptane required for the precipitation of asphaltenes was greatest for Arab Berri crude. Infrared spectra showed characteristic frequencies indicating the presence of several types of functional groups.

Original language	English
Pages (from-to)	1131-1134
Number of pages	4
Journal	Fuel
Volume	67
Issue number	8
DOIs	https://doi.org/10.1016/0016-2361(88)90382-1
State	Published - Aug 1988

Keywords

asphaltenc
chemical characterization
crude oil

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

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10.1016/0016-2361(88)90382-1

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title = "Separation and characterization of asphaltenes from Saudi Arabian crudes",

abstract = "The separation and characterization of asphaltenes from the four marketable Saudi Arabian crudes have been carried out by various analytical techniques. The asphaltenes were precipitated by addition of excess n-pentane to the heavy ends of each crude; Arab heavy crude gave the greatest yield. Elemental analysis showed the greatest amount of nitrogen, indicating the presence of basic functional groups, in Arab heavy crude and the greatest amount of oxygen, indicating the presence of acidic functional groups, in Arab Berri crude. Arab heavy asphaltenes also showed the highest molecular weight and phenol interaction value. In a spot test the amount of n-pentane or n-heptane required for the precipitation of asphaltenes was greatest for Arab Berri crude. Infrared spectra showed characteristic frequencies indicating the presence of several types of functional groups.",

keywords = "asphaltenc, chemical characterization, crude oil",

author = "Misbah-ul-Hasan and Siddiqui, \{M. Nahid\} and M. Arab",

year = "1988",

month = aug,

doi = "10.1016/0016-2361(88)90382-1",

language = "English",

volume = "67",

pages = "1131--1134",

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issn = "0016-2361",

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TY - JOUR

T1 - Separation and characterization of asphaltenes from Saudi Arabian crudes

AU - Misbah-ul-Hasan,

AU - Siddiqui, M. Nahid

AU - Arab, M.

PY - 1988/8

Y1 - 1988/8

N2 - The separation and characterization of asphaltenes from the four marketable Saudi Arabian crudes have been carried out by various analytical techniques. The asphaltenes were precipitated by addition of excess n-pentane to the heavy ends of each crude; Arab heavy crude gave the greatest yield. Elemental analysis showed the greatest amount of nitrogen, indicating the presence of basic functional groups, in Arab heavy crude and the greatest amount of oxygen, indicating the presence of acidic functional groups, in Arab Berri crude. Arab heavy asphaltenes also showed the highest molecular weight and phenol interaction value. In a spot test the amount of n-pentane or n-heptane required for the precipitation of asphaltenes was greatest for Arab Berri crude. Infrared spectra showed characteristic frequencies indicating the presence of several types of functional groups.

AB - The separation and characterization of asphaltenes from the four marketable Saudi Arabian crudes have been carried out by various analytical techniques. The asphaltenes were precipitated by addition of excess n-pentane to the heavy ends of each crude; Arab heavy crude gave the greatest yield. Elemental analysis showed the greatest amount of nitrogen, indicating the presence of basic functional groups, in Arab heavy crude and the greatest amount of oxygen, indicating the presence of acidic functional groups, in Arab Berri crude. Arab heavy asphaltenes also showed the highest molecular weight and phenol interaction value. In a spot test the amount of n-pentane or n-heptane required for the precipitation of asphaltenes was greatest for Arab Berri crude. Infrared spectra showed characteristic frequencies indicating the presence of several types of functional groups.

KW - asphaltenc

KW - chemical characterization

KW - crude oil

UR - https://www.scopus.com/pages/publications/0024055376

U2 - 10.1016/0016-2361(88)90382-1

DO - 10.1016/0016-2361(88)90382-1

M3 - Article

AN - SCOPUS:0024055376

SN - 0016-2361

VL - 67

SP - 1131

EP - 1134

JO - Fuel

JF - Fuel

IS - 8

ER -

Separation and characterization of asphaltenes from Saudi Arabian crudes

Abstract

Keywords

ASJC Scopus subject areas

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