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Trends in Applied Sciences Research
  Year: 2006 | Volume: 1 | Issue: 4 | Page No.: 301-308
DOI: 10.3923/tasr.2006.301.308
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Ranking of Hydrogen Donor Reactivity by Model Acceptor and by Coal Conversion

A.P. Oviawe and D. Nicole

Coal liquefaction processes are usually based on the thermal cleavage of activated bonds giving reactive carbon and oxygen radicals, which abstract hydrogen atoms from the donor solvents. A series of model donor solvents were used to rank their efficacy for the dissolution of Freyming coal. The transfer of hydrogen from the solvent to the coal fragments as measured by coal conversion, was examined. The 1H nmr analysis of the reacting mixture defines the recycle index which characterizes the ability of these solvents as efficient recycle oils in coal liquefaction processes. The hydrogen donors are ranked according to their ability to convert coal to THF-soluble. A model hydrogen acceptor, benzylphenylether, was also used to rank the model donors. Ranking of hydrogen donor reactivity by coal conversion and by benzylphenylether shows a direct correlation.
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How to cite this article:

A.P. Oviawe and D. Nicole , 2006. Ranking of Hydrogen Donor Reactivity by Model Acceptor and by Coal Conversion. Trends in Applied Sciences Research, 1: 301-308.

DOI: 10.3923/tasr.2006.301.308






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