COMBINED EFFECT OF FLUORINE AND ZINC INCORPORATION ON THE HDS ACTIVITY OF Co-Mo CATALYSTS |
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| Authors: | J F Cambra B Guemez P L Arias J L G Fierro |
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| Affiliation: | 1. Departamento de Ingeniería Química y del Medio Ambiente , Universidad del País Vasco , Alda. Urquijo s/n. 48013, Bilbao, Spain;2. Instituto de Catálisis y Petroleoquímica, CSIC , 19, Serrano, Madrid, 28006, Spain |
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| Abstract: | Abstract Conventional HDS-catalysts consist of Co and Mo supported on Y-Al2O3. The addition of Zn as a second promoter or the alumina acidification with F increase the catalitye activity in HDS of commercial feeds (Fierro et al., 1984; Boorman et al., 1984). In this paper the combined effect of both Zn and F incorporation is discussed. A series of Zn-Co-Mo catalysts supported on fluorinated alumina (0.0 –2.0 wt% F) was prepared and tested for HDS activity using a commercial gas-oil. The data gathered showed a decrease in HDS activity for intermediate F contents (0.4 – 1.0 wt%). This result could be tentatively explained through alumina surface deterioration during impregnation with NH4HF2 solutions al low pH. |
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| Keywords: | aldehyde diesel hydrogen peroxide MnO2/Al2O3 oxidative desulfurization |
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