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Article Dans Une Revue Fuel Année : 2001

Structural study of the Moroccan Timahdit (Y-layer) oil shale kerogen using chemical degradations

Résumé

This paper deals with the structural characterization of the Moroccan Timahdit (Y-layer) oil shale kerogen. For this purpose, the kerogen concentrate was submitted to stepwise hydrolysis under phase transfer catalysis conditions. The results show that aliphatic and aromatic dicarboxylic acids are involved in the cross-linking of the kerogen matrix, acting as bridges, while aliphatic and aromatic monocarboxylic acids, and alcohols represent monosubstituents of the matrix. Aliphatic mono- and dicarboxylic acids are produced on ruthenium tetroxide oxidation of the kerogen. These acids arise from a variety of reactions including cleavage of ester linkages. 17α(H),21β(H)- and 17β(H),21α(H)-hopanoic acids, probably bound to the kerogen by ether groups, were identified in the oxidation products.

Domaines

Géochimie

Dates et versions

hal-00155289 , version 1 (17-06-2007)

Identifiants

Citer

Abderahim Kribii, Laurent Lemée, Abdelaziz Chaouch, André Amblès. Structural study of the Moroccan Timahdit (Y-layer) oil shale kerogen using chemical degradations. Fuel, 2001, 80 (5), pp.681-691. ⟨10.1016/S0016-2361(00)00145-9⟩. ⟨hal-00155289⟩

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