Nickel, copper and vanadyl porphyrins from Moroccan oil shales. Composition, novel structures, biological precursors

Conference · Wed Mar 01 04:00:00 EST 1989 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:6820530

Verne-Mismer, J; Ocampo, R; Bauder, C; Callot, H J; Albrecht, P ^[1]

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1. Universite Louis Pasteur, Strasbourg (France)

An exhaustive structural investigation of the nickel and vanadyl-porphyrin fractions from two Moroccan oil shales, Timahdit and Oulad Abdoun, was carried out. More than 20 structures, half of them showing a novel carbon skeleton, were unambiguously assigned by combined spectroscopic (FT NMR + nOe) and synthetic (total or partial synthesis) methods. In addition to the classical series, two groups of structures are of particular interest: (a) the tetrahydrobenzoporphyrins which might derive from a still unknown family of natural chlorophylls; (b) the 17-nor-DPEPs which are likely fossils of the algal chlorophyll c. The last series is complementary to the known 15,17-ethanoporphyrins, specific markers for chlorophyll c and the distribution of both series in various oil shales will be discussed. The composition of a minor copper-porphyrin fraction and preliminary indications concerning the free bases from Oulad Abdoun oil shale will also be presented.

• OSTI ID: 6820530
• Report Number(s): CONF-8904127--
• Conference Information: Journal Name: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA) Journal Volume: 34:1
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040500* -- Oil Shales & Tar Sands-- Properties & Composition
58 GEOSCIENCES
580000 -- Geosciences
AFRICA
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
COPPER COMPOUNDS
DEVELOPING COUNTRIES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MATERIALS
MOROCCO
NICKEL COMPOUNDS
OIL SHALES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PORPHYRINS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS