Mesoporous Ti-SBA-15 Catalysts for Oxidative Desulfurization of Refractory Aromatic Sulfur Compounds in Transport Fuel

15th International Congress on Catalysis 2012, 01.07.2012 - 06.07.2012, Munich/Germany
Mesoporous Ti-SBA-15 Catalysts for Oxidative Desulfurization of Refractory Aromatic Sulfur Compounds in Transport Fuel
Tae-Wan Kim,*a Min-Ji Kim,a Freddy Kleitz,*b Mahesh Muraleedharan Nair,b Rémy Guillet-Nicolas,b Kwang-Eun Jeong,a Ho-Jeong Chae,a Chul-Ung Kima and Soon-Yong Jeong
twkim@krict.re.kr
Freddy.kleitz@chm.ulaval.ca
a Green Chemistry Research Division, Korea Research Institute of Chemical Technology 100, Jang-Dong, Yuseong-Gu, Daejeon 305-600, Korea;
b Department of Chemistry and CERMA, University Laval, Quebec, G1V0A6, QC, Canada
Introduction
Due to a growing global energy demand, continuously increasing petroleum-based light oil residues, such as LPG, naphtha, gasoline, kerosene, and diesel, will continue serving as base resources in petrochemical industry and transport fuels. The inequity between supply and demand of sweet light crude has caused insecure global oil market and high oil price in the long term. However, most of the increasing oil supply in oil-producing countries is sour heavy crude oil, which has high sulfur content, being rich in organic polyaromatic sulfur compounds such as dibenzothiophene derivatives (DBTs). Therefore, desulfurization appears as a key operation step in petroleum refining for producing clean petroleum products with low sulfur amount from sour heavy crude
To produce petroleum products with ultra-low sulfur content, there are complementary (or secondary) desulfurization routes that can be viewed as suitable alternatives to the conventional HDS technology. In particular, selective oxidative desulfurization (ODS) processes have gone through major improvements, showing real potential for commercialization. Nevertheless, producing viable catalysts capable of effectively converting all the different refractory sulfur-containing substances, while maintaining extended lifetime under industrially relevant conditions, is still difficult.  Authors propose large pore titanium-containing organosilylated mesoporous silica (Ti-SBA-15) as a highly efficient catalyst for oxidative desulfurization (ODS) of refractory aromatic sulfur compounds, including real industrial diesel fuel, with the aim to produce ultra-low sulfur diesel.
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