کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6638528 | 461152 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of kerogen maturation by solid-state 13C NMR spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Chemical changes in the structure of kerogen during simulated thermal maturation were investigated by solid-state 13С NMR spectroscopy. The spin counting technique was used to evaluate the share of “observable” carbon atoms with increasing hydrous pyrolysis temperature. The obtained one-dimensional CP-MAS spectra showed that up to 50% of ether bonds were destroyed during the initial stages of sample heating. In spite of the loss of a significant part of alkyl chains, kerogen remained aliphatic. The aromatic structure of kerogen underwent considerable changes: two-dimensional 1H-13C heteronuclear solid-state NMR (HETCOR) spectra showed that in the process of hydrous pyrolysis, the redistribution of carbon atoms took place - branched aromatic carbons transform into bridgehead aromatic carbons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 118, 15 February 2014, Pages 308-315
Journal: Fuel - Volume 118, 15 February 2014, Pages 308-315
نویسندگان
N. Burdelnaya, D. Bushnev, M. Mokeev, A. Dobrodumov,