naa a22 4500 510819567 CHVBK 20180411083524.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11814-013-0097-5 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0097-5 Sulfur removal of gas oil using ultrasound-assisted catalytic oxidative process and study of its optimum conditions [Elektronische Daten] [Zahra Shayegan, Mohammad Razzaghi, Aligholi Niaei, Dariush Salari, Mohammad Tabar, Arash Akbari] Ultrasound-assisted oxidative desulfurization process (UAOD) was applied to reduce sulfur compounds of gas oil containing various types of sulfur content. The environmental regulation requires a very deep desulfurization to eliminate the sulfur compounds. UAOD is a promising technology with lower operating cost and higher safety and environmental protection. For the first time the typical phase transfer agent (tetraoctyl-ammonium-bromide) was replaced with isobutanol because using isobutanol is much more economical than TOAB, imposing no contamination. The reaction was carried out at optimal point with various temperatures, in single-, two- and three step-procedures, investigating the effect of gradual increase of H2O2 and TOAB being used instead of isobutanol. Total sulfur concentration in oil phase was analyzed by ASTM-D3120 method. The highest removal of about 90% for gas oil containing 9,500 mg/kg of sulfur was achieved in three-steps during 17 minutes of process at 62±2 °C when 180.3 mmol of H2O2 was used and extraction carried out by methanol. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Ultrasound-assisted Oxidative Desulfurization nationallicence Gas Oil nationallicence Oxidant nationallicence Catalyst nationallicence Isobutanol nationallicence Shayegan Zahra Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut Razzaghi Mohammad Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut Niaei Aligholi Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut Salari Dariush Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut Tabar Mohammad Department of Mechanical Engineering, Faculty of Mechanic Engineering, University of Tabriz, Tabriz, Iran aut Akbari Arash Tabriz Oil Refinery Laboratory, Tabriz, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/9(2013-09-01), 1751-1759 0256-1115 30:9<1751 2013 30 11814 https://doi.org/10.1007/s11814-013-0097-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0097-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shayegan Zahra Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Razzaghi Mohammad Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Niaei Aligholi Department of Chemical Engineering, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Salari Dariush Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Tabar Mohammad Department of Mechanical Engineering, Faculty of Mechanic Engineering, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Akbari Arash Tabriz Oil Refinery Laboratory, Tabriz, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/9(2013-09-01), 1751-1759 0256-1115 30:9<1751 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer