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Structure and transformation of the major coal porphyrins.
Autorzy
Rok wydania
1990
Czasopismo
Numer woluminu
77
Strony
578-581
DOI
10.1007/BF01133726
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Systematic studies of coal porphyrins over the last 10 years have revealed that they predominantely consist of an etio-type homologous mixture of iron and
gallium complexes and free bases [ 1 - 3 ] . Di- and monocarboxylic porphyrin structures are common in lignites, while only polyalkyl structures
are present in bituminous coals [ 4 - 6]. Higher concentrations of even carbon- numbered homologues are observed in the mixtures, with a range varying from
C24 to C32 according to the level of coal maturity [7,8]. However, in contrast to the numerous geoporphyrins identified from other sources [9,101 the structural
identification of individual coalporphyrins still remains in the early stages of development.
Adres publiczny
https://doi.org/10.1007/BF01133726
Strona internetowa wydawcy
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