| 000 | 02240nab a2200181 4500 | ||
|---|---|---|---|
| 005 | 20260520000831.0 | ||
| 008 | 260224s2009 xxu | ||
| 245 | 0 | 0 | _aRole of the ru and support in sulfieded RuNiMo catalysts in simultaneous hydrodearomatization (HDA), hydrodesulfurization (HDS), and hydrodenitrogenation (HDN) reactions |
| 260 |
_a _b _cmar./abr. 2009 |
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| 270 | _a2009-08-12 ; 2009-08-12 | ||
| 300 | _a9 p. ; 1364-1372 | ||
| 520 | _aResúmen del autor: Simultaneous hydrodesulfurization (HDS), hydrodearomatization (HDA), and hydrodenitrogenation (HDN) reactions have been studied over sulfided RuNiMo/Al2O3 catalysts. The effects of Ru promotion and alumina support modification with HY zeolite and P on catalyst performance have been studied using a synthetic feed containing dibenzothiophene, toluene, naphthalene, and pyridine. Activity tests were carried out in a semi-automatic microplant equipped with a continuous flow reactor, working under conditions similar to industrial practice (P = 5 MPa, T = 285-360 °C, and liquid hourly space velocity (LHSV) = 3 and 4.5 h-1). The catalysts were characterized by SBET, X-ray diffraction (XRD), temperature-programmed reduction (TPR), temperature-programmed desorption of ammonia (TPD-NH3), and X-ray photoelectron spectroscopy (XPS) techniques. Activity tests revealed that optimal Ru loading is 1 wt % (nominal). Under fixed experimental conditions (300 °C, 5 MPa, and LHSV = 3 h-1), ultra-low sulfur diesel (S < 20 ppm S) was obtained over a Ru(1%)Ni(5%)Mo(14%)/ -Al2O3 catalyst from a feed containing 18361 ppm S. However, this catalyst showed similar capability toward aromatics and pyridine removal as a commercial NiMo/Al2O3 catalyst. At a reaction temperature of 345 °C, the 5% HY-Al2O3 substrate led to a small increase in the hydrogenation capability of this catalyst but without enhancement of its HDS/HDN capability. On the contrary, the P-modified substrate resulted in a lower activity. The properties of the supported catalysts are discussed in terms of the support effect and Ru promotion | ||
| 773 | 0 |
_tEnergy & fuels _g23 |
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| 942 | _cARTICULO | ||
| 100 | 1 |
_aPawalec, B. _941785 |
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| 100 | 1 |
_aNavarro, R.M. _941786 |
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| 999 |
_c170295 _d170295 |
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