Analysis of structural-group composition of asphalts on the basis of PMR spectra

Journal Article · · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00730042· OSTI ID:6747868

Shemyatenkov, A G; Gorshkov, V S; Glotova, N A

In evaluations of the molecular structure of asphalt components determinations have been made of the integral intensities of the proton magnetic resonance (PMR) signals from protons of the aromatic systems and various aliphatic groups. However, it is difficult to determine the integral intensities of the signals from protons of different aliphatic groups, since they overlap to a considerable extent in the region of 1.0-2.5 ppm. For this reason, the conventional analysis of the PMR spectra of asphalts entails serious errors. For a more accurate determination of integral intensities of the signals from protons of different aliphatic groups, more modern methods must be used, such as computer-aided calculations of the spectra. The present article is addressed to this question. Data are presented which show that the computer-aided analysis of PMP spectra of asphalt group compounds is reliable and accurate and reveals additional features of molecular structure of the components, such as the presence of short and long methylene chains and their quantitative ratio. 9 refs.

• OSTI ID: 6747868
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Journal Name: Chem. Technol. Fuels Oils (Engl. Transl.); (United States) Vol. 17:7-8; ISSN CTFOA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ASPHALTS
BITUMENS
COMPUTER CALCULATIONS
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RESONANCE
SPECTROSCOPY
TAR