自制
发表于 2025-3-28 18:35:12
The Origin of Coalsulose in samples in which it could not confidently be identified by C 13 nmr or FTIR. A large number of phenols related to lignin were found. It was concluded that a wide variety of oxidized lignin molecules form the principal input to coalification, but with some contribution from polysaccharide de
平
发表于 2025-3-28 19:12:02
Introduction to Coal Photochemistryaromatic molecules but akin to the fluorescence lifetimes of aromatic polymers. Thus the fluorescence behaviour of coal extracts and suspensions appear to be dominated by the ready transfer — both radiative and non radiative — of energy from one aromatic structure to the next. Energy is transferred
散步
发表于 2025-3-29 00:46:37
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赔偿
发表于 2025-3-29 05:43:59
Slow and Rapid Pyrolysis of Coale experimental techniques used to study the chemical an the physical changes which occur upon slow and rapid pyrolysis of coal are reviewed. Relevant experimental results are described. The influence of experimental conditions on the yield and composition of the volatile fraction, liberated upon coa
Dorsal-Kyphosis
发表于 2025-3-29 07:54:31
Coal Liquefaction Kineticstion. For example, dissolution of coal may result in nearly complete “liquefaction” up to 95% of the maf coal to products soluble in tetrahydrofuran, benzene or pyridine. However, the average molecular weight of this material is typically more than 1000. Catalytic hydrogenation, batch or continuous,
hair-bulb
发表于 2025-3-29 11:43:38
Book 1988tion of many specific recent results on structure and characterization of coal and its products the potential of new instrumental techniques is presented in the first part of the book. Finally the reactivity of coals at different conditions both in laboratory and industry is discussed. We hope that
隐语
发表于 2025-3-29 15:55:00
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持续
发表于 2025-3-29 20:10:47
5楼
强行引入
发表于 2025-3-29 23:52:34
5楼
的阐明
发表于 2025-3-30 04:05:55
6楼