Redox activity of nickel and vanadium porphyrins: a possible mechanism behind petroleum genesis and maturation?

The presence of metalloporphyrins in crude oil has been known for many years. In contrast, their role on the physical-chemical properties is only now beginning to be understood. In this study, we test using high-level ab initio calculations, the hypothesis of a possible redox catalytic activity of v...

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Bibliographic Details
Published in:RSC advances 2019-03, Vol.9 (17), p.959-9516
Main Authors: Munoz, G, Gunessee, B. K, Bégué, D, Bouyssiere, B, Baraille, I, Vallverdu, G, Santos Silva, H
Format: Article
Language:English
Subjects:
Alcohols
Analytical chemistry
Catalysis
Catalytic activity
Chemical properties
Chemical Sciences
Chemistry
Crude oil
Material chemistry
Maturation
Nickel
or physical chemistry
Organic chemistry
Oxidation
Polymers
Porphyrins
Theoretical and
Vanadium
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Summary:The presence of metalloporphyrins in crude oil has been known for many years. In contrast, their role on the physical-chemical properties is only now beginning to be understood. In this study, we test using high-level ab initio calculations, the hypothesis of a possible redox catalytic activity of vanadium and nickel metalloporphyrins in crude oil, illustrated by the oxidation of methanol to formaldehyde and hydrogen dissociation, respectively. This process which may take place during petroleum genesis and maturation, explains some of its physical-chemical properties, such as polar chains, the absence of alcohols, the trapping of porphyrins within macromolecular aggregates. The presence of metalloporphyrins in crude oil has been known for many years.
ISSN:2046-2069
2046-2069
DOI:10.1039/c9ra01104h