High Quality Diesel by Hydrotreating Gas Oil over Modified Titania-supported NiMo Catalysts
| Autor: | E.-S. A. Soltan, H. A. El-Syed, S. A. Hanafi |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. 30:698-722 |
| ISSN: | 1556-7230 1556-7036 |
| Popis: | In this work, two methods of preparing alumina-titania and ceria-titania mixed oxide supports were studied: In the first method, alumina or ceria were precipitated on the surface of a commercial titanium oxide. In the second method, alumina or ceria were impregnated on the surface of titania. In all catalysts under study, NiO comprises 3 wt% while MoO3 comprises 8 wt% in addition to 89 wt% of the support material. Surface area and pore volume measurements for the supports and catalysts were obtained from the analysis of nitrogen adsorption-desorption isotherms. Al, Ce, Ni, and Mo contents and coke percent of the spent catalysts were determined by x-ray fluorescence method. Characterization of the samples have been studied by DTA and XRD. The HDS activities have been studied, and two types of catalytic tests were used. One type of measurement was a screening test using the pulse technique. The second type was focused on studying the effect of important process variables as reaction temperature, hy... |
| Databáze: | OpenAIRE |
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