Occurrence of non-hydrolysable amides in the macromolecular constituent of Scenedesmus quadricauda cell wall as revealed by [sup 15]N NMR: Origin of n-alkylnitriles in pyrolysates of ultralaminai-containing kerogens
- Ecole Nationale Superieure de Chimie de Paris (France)
- Univ. P. et M. Curie, Paris (France)
New structures, termed ultralaminae, were recently shown to occur in kerogens from numerous oil shales and source rocks. Morphological and chemical studies revealed that ultralaminae originate from the selective preservation of the non-hydrolysable biomacromolecules (algaenans) building up the thin outer walls of several Chlorophyceae (green microalgae) including the cosmopolitan general Scenedesmus and Chlorella. The chemical correlation between such algaenans and fossil ultralaminae was mainly based on the production, on pyrolysis, of nitrogen compounds, n-alkylnitriles, with specific distributions depending on the lacustrine of marine origin of the considered samples. In addition, these bio-and geopolymers were characterized by quite high N levels.
- OSTI ID:
- 6694598
- Journal Information:
- Geochimica et Cosmochimica Acta; (United States), Vol. 57:4; ISSN 0016-7037
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMIDES
QUALITATIVE CHEMICAL ANALYSIS
KEROGEN
PYROLYSIS
NITRILES
SYNTHESIS
CELL WALL
CHLORELLA
NITROGEN COMPOUNDS
OIL SHALES
ORIGIN
PRESERVATION
PRODUCTION
SCENEDESMUS
SOURCE ROCKS
ALGAE
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CELL CONSTITUENTS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLOROPHYCOTA
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
MATTER
MICROORGANISMS
ORGANIC COMPOUNDS
ORGANIC MATTER
ORGANIC NITROGEN COMPOUNDS
PLANTS
ROCKS
SEDIMENTARY ROCKS
SHALES
THERMOCHEMICAL PROCESSES
UNICELLULAR ALGAE
040500* - Oil Shales & Tar Sands- Properties & Composition
400102 - Chemical & Spectral Procedures