Res. Chem. lntermed., Vol. 24, No. 5, pp. 551-560 (1998) 551 9 VSP 1998 HYDROCRAKING OF DIBENZOTHIOPHENE OVER METAL-LOADED ZEOLITES CATALYST KAZUYOSHI KANEDA, TAKEMA WADA, SHIN-ICHI NAKAGAWA, SATORU MURATA, TERUO SUZUKA, and MASAKATSU NOMURA* Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565, Japan Received 17 September; accepted l0 November 1997 INTRODUCTION Sulfur oxides produced in the combustion of gas oil are known to cause air pollution. The reduction of sulfur content in gas oil is an important subject to solve these issue. It has already been found that several percent of sulfur is contained in gas oil and more than sixty kinds of sulfur-containing organic compounds exist. Dibenzothiophene (DBT) especially is believed to be one of the tough materials to be eliminated and many researchers have been studying the hydrodesulfurization (HDS) reaction of DBT . In the petroleum industry, Ni-Mo/AI203 or Co-Mo/Al203 are usually employed as HDS catalysts for gas oil [2,3]. These catalysts are not sufficient for deep HDS reaction. Therefore, the development of more active catalysts is expected. We have found that, for the hydrocracking reaction of polycyclic aromatic compounds, palladium- and nickel- co-loaded Y-type zeolite catalyst (Pd-Ni-Y) showed higher activity
Research on Chemical Intermediates – Springer Journals
Published: Apr 15, 2009
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