Hits:

Indexed by:期刊论文

Date of Publication:2014-01-01

Journal:FUEL

Included Journals:SCIE、EI

Volume:115

Page Number:596-599

ISSN No.:0016-2361

Key Words:TG-MS; Pyrolysis; Sulfur-containing model compounds; Oxidative atmosphere

Abstract:In this study, the sulfur release and transformation behaviors of tetradecyl mercaptan, dibutyl sulfide, phenylsulfide, 2-methylthiophene, benzothiophene and dibenzothiophene during pyrolysis were investigated by thermo-gravimetric analyzer coupled with mass spectrometer (TG-MS). The order of sulfurs release is dibutyl sulfide > 2-methylthiophene > tetradecyl mercaptan > benzothiophene > phenylsulfide > dibenzothiophene. The decomposition temperatures of all of the sulfur compounds are lower during pyrolysis under an oxidative atmosphere than that under inert and hydrogen atmospheres, which indicates that oxygen can break C-S bonds more easily than C-C bonds. The SO2 evolution of most sulfur model compounds except 2-methylthiophene and dibenzothiophene is derived mainly by decomposition of their transformation compounds rather than their native forms. Most sulfur compounds can be removed under an oxidative atmosphere with little loss of carbon. (C) 2013 Elsevier Ltd. All rights reserved.