Abstract
In this paper, diphenylmethane, bibenzyl, phenetole and diphenyl ether were used as coal-related model compounds (CRMCs) to study the catalysis of SO 4 2 - /ZrO 2 in the process of coal liquefaction. Based on the reaction kinetics of CRMCs in tetralin and identification of reaction products, the catalytic mechanisms of SO 4 2 - /ZrO 2 for CRMCs were discussed. The results indicate that the CRMCs were mainly hydrocracked by SO 4 2 - /ZrO 2. The conversion of tetralin solvent increased with the reactivity of CRMC. Reactions of tetralin mainly included hydrocracking, isomerization, alkylation and hydrogenation/dehydrogenation. A cationic reaction mechanism was proposed, which can successfully interpret the reaction of CRMCs and tetralin catalyzed by SO 4 2 - /ZrO 2.
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