Early coalification features as approached by solid state 13C CP/MAS NMR spectroscopy

被引：33

作者：

Kalaitzidis, S

Georgakopoulos, A

Christanis, K ^{[1
]}

Iordanidis, A

机构：

[1] Univ Patras, Dept Geol, GR-26500 Patras, Greece

[2] Aristotle Univ Thessaloniki, Dept Mineral Petrol Econ Geol, Sch Geol, GR-54124 Thessaloniki, Greece

[3] Technol Educ Inst W Macedonia, Dept Geotechnol & Environm Engn, GR-50100 Kozani, Greece

来源：

GEOCHIMICA ET COSMOCHIMICA ACTA | 2006年 / 70卷 / 04期

关键词：

D O I：

10.1016/j.gca.2005.10.014

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Solid state C-13 CP/MAS NMR spectroscopy and ultimate analysis have been applied to a study of samples from the Pleistocene Drama lignite and its successive modern analogue, the Philippi peat, in northeastern Greece. The succession from peat to lignite resulted in a C enrichment averaging 10.7% and depletion in H and O averaging 6.5 and 18.5%, respectively. Early coalification resulted in the degradation of methoxyl groups, carbohydrates and carboxylic groups, whereas the aliphatic carbons were less affected. However, organic geochemical alteration seems to depend strongly on the initial peatification conditions. The "aromaticity" decreases from the stage of peat to lignite, as a result of the significant degradation of lignin precursors. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：947 / 959

页数：13

共 63 条

[1] Rearrangement of carbon and nitrogen forms in peat after progressive thermal oxidation as determined by solid-state 13C and 15N-NMR spectroscopy [J].