Abstract
A new class of compounds is being investigated for their ability to donate hydrogen during coal liquefaction. The compounds, known as cyclic olefins, are hydroaromatic species without an aromatic ring. These compounds are extremely reactive at coal liquefaction conditions, readily forming other partially saturated compounds and aromatics. This investigation demonstrates the effectiveness of these compounds for coal conversion and liquefaction products. 1,4,5,8-Tetrahydronaphthalene, also known as isotetralin, and 1,4,5,8,9,10-hexahydroanthracene are the two cyclic olefins employed in this study. Their hydrogen-donating ability, as reflected by the amount of coal converted to tetrahydrofuran solubles, is compared to that of their conventional hydroaromatic analogues, tetralin, dihydroanthracene, and octahydroanthracene, at equivalent donable hydrogen levels
Published Version
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