Abstract
Abstract The chemisorption of sulfur on thermally decomposed copper and iron sulfides was studied and its application to the desulfurization process of heavy oil was attemped. Thermal decomposition of sulfides was carried out by calcining CuS and FeS2 at 200–800 °C under 10−3 mmHg and with 5 °C/min. Sulfur was adsorbed on the calcined sulfides in toluene. Thermally decomposed copper sulfide (Cu/S: 1–2) easily chemisorbs free sulfur in toluene below 100 °C, but not iron sulfide (Fe/S: 1–0.5). The relationship between sulfur affinity and the structure of partially decomposed sulfide was discussed in terms of the kinetics of initial chemisorption of sulfur and the sulfur adsorption coefficient calculated from the ratio of the adsorbed sulfur to the sulfur required to reform starting CuS and FeS2. The partially decomposed copper sulfide (Cu1-2S) easily chemisorbs free sulfur in heavy oil. Chemisorption might be applied to the desulfurization of heavy oil.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
