Chemistry and Characterization of Coal Macerals by Randall E.; Crelling, John C. Winans

By Randall E.; Crelling, John C. Winans

content material: Chemistry and characterization of coal macerals : review / Randall E. Winans and John C. Crelling --
Premaceral contents of peats correlated with proximate and supreme analyses / A.D. Cohen and M.J. Andrejko --
Characterization of coal macerals via fluorescence microscopy / John C. Crelling and David F. Bensley --
Microscopic IR spectroscopy of coals / Douglas Brenner --
diversifications in homes of coal macerals elucidated by way of density gradient separation / Gary R. Dyrkacz, C.A.A. Bloomquist, L. Ruscic, and E. Philip Horwitz --
Structural diversifications in coal macerals : program of two-dimensional and dipolar dephasing ¹³C-NMR recommendations / Ronald J. Pugmire, Warner R. Woolfenden, Charles L. Mayne, Jirina Karas, and David M. furnish --
Relationships among the natural constitution of vitrinite and chosen parameters of coalification as indicated via Fourier remodel IR spectra / Deborah W. Kuehn, Alan Davis, and Paul C. Painter --
Electron spin resonance of remoted coal macerals : initial survey / B.G. Silbernagel, L.A. Gebhard, Gary R. Dyrkacz, and C.A.A. Bloomquist --
Reactivity and characterization of coal macerals / Randall E. Winans, Ryoichi Hayatsu, Robert G. Scott, and Robert L. McBeth --
points of the hydrogen atom move reactions of macerals / Chol-Yoo Choi and Leon M. Stock.

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Woody Taxodium peats from Georgia (not shown) and South C a r o l i n a (not shown) were s i m i l a r i n c h a r a c t e r t o the North C a r o l i n a samples. The Georgia Nymphaea peats, which had the h i g h e s t p r e v i t r i n i t e s , can be seen t o have the h i g h e s t oxygen, hydrogen, and v o l a t i l e matter contents. Note that BTU values tended t o c o r r e l a t e more s t r o n g l y w i t h ash contents than w i t h maceral c o n t e n t s . Summary and Conclusions P r e l i m i n a r y c o r r e l a t i o n s o f pétrographie c h a r a c t e r i s t i c s o f peats ( i .

Advances i n Organic Geochemistry-1973. ; CNRS: P a r i s , 1974c, pp. 379-407. T e i c h m u l l e r , M a r l i e s , Fluoreszenzmikroskopische Anderungen von L i p t i n i t e n und Vitriniten mit zunehmendem Inkohlungsgrad und i h r e Beziehungen zu Bitumenbildung und Verkokungsverhalten. Geologischer Landesamt Nordrhein-Westfalen, K r e f e l d , 1982, pp. 1-119. , and B. Durand, Fluorescence m i c r o s c o p i c a l rank s t u d i e s on liptinites and vitrinites i n peat and c o a l s and comparison with r e s u l t s of the r o c k - e v a l p y r o l y s i s .

6 coal (high v o l a t i l e C bituminous rank) were examined to evaluate the u t i l i t y of t h i s new technique f o r microscopic IR a n a l y s i s of coals. In Figure 2, a photomicrograph of a t h i n s e c t i o n specimen c o n s i s t i n g of a megaspore (a form of l i p t i n i t e ) surrounded by r e l a t i v e l y homogeneous v i t r i n i t e i s shown. The t h i n s e c t i o n was placed on a barium f l u o r i d e d i s k on the stage of the IR microscope. The megaspore and a region of the v i t r i n i t e l y i n g c l o s e to the megaspore on the same specimen were analyzed w i t h the IR microscope.

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