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Indexed by:Journal Papers

First Author:Geng, Haoyao

Correspondence Author:Li, G (reprint author), Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.; Fan, HJ (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China.

Co-author:Li, Lu,Li, Gang,Wei, Yue,Fan, Hongjun,Jin, Lijun,Hu, Haoquan

Date of Publication:2020-02-15

Journal:FUEL

Included Journals:EI、SCIE

Volume:262

ISSN No.:0016-2361

Key Words:Pyrite; Catalytic pyrolysis; Coal-related model compounds; Tetrahydronaphthalene

Abstract:The pyrolysis behaviors of coal-related model compounds (bibenzyl and benzyloxybenzene) were investigated on a fixed-bed reactor catalyzed by pyrite (main component is FeS2). The pyrolysis products were analyzed by gas chromatography (GC). The results indicated pyrite could increase the conversion of the model compounds and the yield of liquid and gas, while decrease the char yield. The theoretical calculation results indicated that the pyrite accelerates the initial bond dissociation of parent molecules, thus the radicals can be produced easily. Moreover, the main reason for the decreased yield of char after adding the pyrite is that the large radicals are stabilized on the surface by adsorption, then having little chance to combine with each other to form char. The changes in pyrolysis product distributions with pyrite were also consistent with the calculation results. When adding tetrahydronaphthalene and pyrite simultaneously, there is a significant synergistic effect, which causing the conversion of bibenzyl increased by 14.78 wt% compared with that adding tetrahydronaphthalene or pyrite alone.